Home » Public Forums » GMCnet » Solar daytime lighting (Sort of Non-GMC but maybe a seed for an idea)
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| Re: [GMCnet] Solar daytime lighting [message #146439 is a reply to message #146437] |
Thu, 13 October 2011 20:45   |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Emery,
When I built a duplex at the Methodist retirement community in '99, for my
folks, uncle, and evenutally us, I installed "light tubes" in each of the
four bathrooms. When we remodelled here last summer, I added them to the
kitchen, utility room and one bath. Our master bath has a large skylight.
Electric lighting is largely superfluous in those rooms during the daylight
hours.
There is no comparison between the light distribution from the 3'x4'
skylight and the 10" light tubes -- the latter are MUCH better. The
reflection of light from the polished sides of the tube, combined with the
prismatic diffuser at the ceiling causes the light to be much more
effectively distributed.
And the fact that the tube is sealed top and bottom reduces convective heat
loss.
And they're cheaper too. :-)
Ken H.
On Thu, Oct 13, 2011 at 9:31 PM, Emery Stora <emerystora@mac.com> wrote:
>
> On Oct 13, 2011, at 7:01 PM, Dolph Santorine wrote:
>
> > Solatube Daylighting System and Tubular Daylighting Devices for
> residential or commercial daylighting and sunlighting needs are the smart,
> green and environmentally friendly alternative to traditional skylights
> >
> > Might have trouble headed down the highway, but they are great at home.
> >
> > Dolph
> >
>
>
>
> I am curious. How is a conventional skylight not smart, green and
> environmentally friendly?
>
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Solar daytime lighting [message #146443 is a reply to message #146439] |
Thu, 13 October 2011 21:43 |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Senior Member |
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BUT (and that's a BIG but) the SolaTubes and similar rely
on the reflective tube (minimum of 5', if I recall) to
scatter the light from the collector for full illumination
of the diffuser in the room below. I doubt they would work
in a motorhome.
As Ken stated, they work VERY well in a house. Our living
room is on the south side of the house, but the windows
and door look out to a half-covered patio and natural light
is minimal. The SolaTube really lights up the room when
the sun is up. It does a surprising job of making evening
passage safe when there is a full or nearly full moon!
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> From: hend4800@bellsouth.net
> Date: Thu, 13 Oct 2011 21:45:29 -0400
> To: gmclist@temp.gmcnet.org
> Subject: Re: [GMCnet] Solar daytime lighting
>
> Emery,
>
> When I built a duplex at the Methodist retirement community in '99, for my
> folks, uncle, and evenutally us, I installed "light tubes" in each of the
> four bathrooms. When we remodelled here last summer, I added them to the
> kitchen, utility room and one bath. Our master bath has a large skylight.
> Electric lighting is largely superfluous in those rooms during the daylight
> hours.
>
> There is no comparison between the light distribution from the 3'x4'
> skylight and the 10" light tubes -- the latter are MUCH better. The
> reflection of light from the polished sides of the tube, combined with the
> prismatic diffuser at the ceiling causes the light to be much more
> effectively distributed.
>
> And the fact that the tube is sealed top and bottom reduces convective heat
> loss.
>
> And they're cheaper too. :-)
>
> Ken H.
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| Re: [GMCnet] Solar daytime lighting [message #146462 is a reply to message #146439] |
Fri, 14 October 2011 06:28 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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Senior Member |
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Ken
I am very familar will conventional and tube type skylights. We sold
thousnds of both kinds when I owned the window / door distributorship
in Santa Fe which I sold in 1998.
My comment was just questioning why the words "smart", "green", and
"environmentally friendly" would apply to the tube type and not to the
conventional skylights?
Those words are now commonly used as advertising hype and there is no
way that conventional skylights are not "smart, green, or
environmentally friendly" as well. They both bring in solar light and
energy without using electricity.
Emery Stora
On Oct 13, 2011, at 7:45 PM, Ken Henderson <hend4800@bellsouth.net>
wrote:
> Emery,
>
> When I built a duplex at the Methodist retirement community in '99,
> for my
> folks, uncle, and evenutally us, I installed "light tubes" in each
> of the
> four bathrooms. When we remodelled here last summer, I added them
> to the
> kitchen, utility room and one bath. Our master bath has a large
> skylight.
> Electric lighting is largely superfluous in those rooms during the
> daylight
> hours.
>
> There is no comparison between the light distribution from the 3'x4'
> skylight and the 10" light tubes -- the latter are MUCH better. The
> reflection of light from the polished sides of the tube, combined
> with the
> prismatic diffuser at the ceiling causes the light to be much more
> effectively distributed.
>
> And the fact that the tube is sealed top and bottom reduces
> convective heat
> loss.
>
> And they're cheaper too. :-)
>
> Ken H.
>
>
> On Thu, Oct 13, 2011 at 9:31 PM, Emery Stora <emerystora@mac.com>
> wrote:
>
>>
>> On Oct 13, 2011, at 7:01 PM, Dolph Santorine wrote:
>>
>>> Solatube Daylighting System and Tubular Daylighting Devices for
>> residential or commercial daylighting and sunlighting needs are the
>> smart,
>> green and environmentally friendly alternative to traditional
>> skylights
>>>
>>> Might have trouble headed down the highway, but they are great at
>>> home.
>>>
>>> Dolph
>>>
>>
>>
>>
>> I am curious. How is a conventional skylight not smart, green and
>> environmentally friendly?
>>
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] Solar daytime lighting [message #146463 is a reply to message #146462] |
Fri, 14 October 2011 06:45 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Emery,
That I definitely agree with. So much so that "politically correct" and
"hype" words hardly even register with me any longer -- like TV commercials
and CRT pop-ups -- they're "just not there". :-)
Ken H.
On Fri, Oct 14, 2011 at 7:28 AM, Emery Stora <emerystora@mac.com> wrote:
> Ken
> ...Those words are now commonly used as advertising hype and there is no
> way that conventional skylights are not "smart, green, or
> environmentally friendly" as well. They both bring in solar light and
> energy without using electricity.
>
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Solar daytime lighting [message #146464 is a reply to message #146462] |
Fri, 14 October 2011 06:58 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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Could I interest you geltlemen in some DIGITAL headphones? Or perhaps a COMPUTER CONTROLLED flashlight??
=--johnny
'76 23' Norris
'76 Palm Beach
________________________________
From: Emery Stora <emerystora@mac.com>
To: "gmclist@temp.gmcnet.org" <gmclist@temp.gmcnet.org>
Sent: Friday, October 14, 2011 7:28 AM
Subject: Re: [GMCnet] Solar daytime lighting
Ken
I am very familar will conventional and tube type skylights. We sold
thousnds of both kinds when I owned the window / door distributorship
in Santa Fe which I sold in 1998.
My comment was just questioning why the words "smart", "green", and
"environmentally friendly" would apply to the tube type and not to the
conventional skylights?
Those words are now commonly used as advertising hype and there is no
way that conventional skylights are not "smart, green, or
environmentally friendly" as well. They both bring in solar light and
energy without using electricity.
Emery Stora
On Oct 13, 2011, at 7:45 PM, Ken Henderson <hend4800@bellsouth.net>
wrote:
> Emery,
>
> When I built a duplex at the Methodist retirement community in '99,
> for my
> folks, uncle, and evenutally us, I installed "light tubes" in each
> of the
> four bathrooms. When we remodelled here last summer, I added them
> to the
> kitchen, utility room and one bath. Our master bath has a large
> skylight.
> Electric lighting is largely superfluous in those rooms during the
> daylight
> hours.
>
> There is no comparison between the light distribution from the 3'x4'
> skylight and the 10" light tubes -- the latter are MUCH better. The
> reflection of light from the polished sides of the tube, combined
> with the
> prismatic diffuser at the ceiling causes the light to be much more
> effectively distributed.
>
> And the fact that the tube is sealed top and bottom reduces
> convective heat
> loss.
>
> And they're cheaper too. :-)
>
> Ken H.
>
>
> On Thu, Oct 13, 2011 at 9:31 PM, Emery Stora <emerystora@mac.com>
> wrote:
>
>>
>> On Oct 13, 2011, at 7:01 PM, Dolph Santorine wrote:
>>
>>> Solatube Daylighting System and Tubular Daylighting Devices for
>> residential or commercial daylighting and sunlighting needs are the
>> smart,
>> green and environmentally friendly alternative to traditional
>> skylights
>>>
>>> Might have trouble headed down the highway, but they are great at
>>> home.
>>>
>>> Dolph
>>>
>>
>>
>>
>> I am curious. How is a conventional skylight not smart, green and
>> environmentally friendly?
>>
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] Solar daytime lighting [message #146473 is a reply to message #146462] |
Fri, 14 October 2011 09:09 |
Larry C
Messages: 1168
Registered: July 2004
Location: NE Illinois by the Illino...
Karma: 0
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Senior Member |
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My comment was just questioning why the words "smart", "green", and "environmentally friendly" would apply to the tube type and not to the conventional skylights?
My opinion had always been the skylights were to bring light into a dark area of the house. A good bright distribution of light meant less or no power needed for lighting. Today, the catch words are "smart" "green" and "environenmentally Friendly" because its on everyones mind. With the cost of electricity going sky high, and not going to stop ever, folks have "SOLAR" in their minds and will go for anything that will save money in the long run.
That RV in Austrailia, the WotDaHeckIsIT ( Play on words ) by Rob Grey had a skylight made of what looked like frosted glass or plastic. It was flush with the roof line. In our world of the GMC roof, its called a FANTASTIC VENT. This can't be more evident where the Bath fan has been removed and a Fantastic vent has been installed. Fabulous improvement with the admittance of sun light, shame on GM for not doing this in the first place.
And of course, in the wake of continued rising costs, heat systems are being considered in the SOLAR field. There are lots of experiments going on and one manufacturer has a solar assisted unit on the market.
Probably overkill to this conversation, A mall in our area had some basic sky lights to help bring light into several areas of the mall. They were simple fixtures with just blurred glass. During a remodel a few years back, these old sky lights were enlarged, replaced with what could be considered a clear glass greenhouse on the roof. The sides where the roof and attic are, have been covered with mirrors which absolutely enlargen's the sun collection area. The dispersement of light is so great that they don't use the lights other than for display areas during the day.
Another example is a Best Buy in Racine, Wi. They had a store built and put skylights in. During the day, they are open with SUN LIGHT in the store and no other artificial lighting used. My opinion is its a good idea but they might take up on the additional mirror effect that the mall has used, but its a step in the right direction.
The signs of the times.
Gatsbys' CRUISER  08-18-04
74 GLACIER X, 260/455-APC-4 Bagg'r
Remflex Manifold gaskets
CampGrounds needed, Add yours to "PLACES" />
http://www.gmceast.com/travel
_
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| Re: [GMCnet] Solar daytime lighting [message #146475 is a reply to message #146473] |
Fri, 14 October 2011 09:15 |
Dolph Santorine
Messages: 1236
Registered: April 2011
Location: Wheeling, WV
Karma: -41
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Senior Member |
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Like the law of gravity, all skylights leak. Or seem to leak.
Don't get me wrong, we love ours.
The leaks are another story.
Dolph
On Oct 14, 2011, at 10:09 AM, Larry C wrote:
>
>
> My comment was just questioning why the words "smart", "green", and "environmentally friendly" would apply to the tube type and not to the conventional skylights?
>
>
> My opinion had always been the skylights were to bring light into a dark area of the house. A good bright distribution of light meant less or no power needed for lighting. Today, the catch words are "smart" "green" and "environenmentally Friendly" because its on everyones mind. With the cost of electricity going sky high, and not going to stop ever, folks have "SOLAR" in their minds and will go for anything that will save money in the long run.
>
> That RV in Austrailia, the WotDaHeckIsIT ( Play on words ) by Rob Grey had a skylight made of what looked like frosted glass or plastic. It was flush with the roof line. In our world of the GMC roof, its called a FANTASTIC VENT. This can't be more evident where the Bath fan has been removed and a Fantastic vent has been installed. Fabulous improvement with the admittance of sun light, shame on GM for not doing this in the first place.
>
> And of course, in the wake of continued rising costs, heat systems are being considered in the SOLAR field. There are lots of experiments going on and one manufacturer has a solar assisted unit on the market.
>
> Probably overkill to this conversation, A mall in our area had some basic sky lights to help bring light into several areas of the mall. They were simple fixtures with just blurred glass. During a remodel a few years back, these old sky lights were enlarged, replaced with what could be considered a clear glass greenhouse on the roof. The sides where the roof and attic are, have been covered with mirrors which absolutely enlargen's the sun collection area. The dispersement of light is so great that they don't use the lights other than for display areas during the day.
>
> Another example is a Best Buy in Racine, Wi. They had a store built and put skylights in. During the day, they are open with SUN LIGHT in the store and no other artificial lighting used. My opinion is its a good idea but they might take up on the additional mirror effect that the mall has used, but its a step in the right direction.
>
> The signs of the times.
> --
> Gatsbys' CRUISER :d 08-18-04
> 74 GLACIER X, 260/455-APC-4 Bagg'r
> Remflex Manifold gaskets
>
> ADD TO THE FUN-GMC'r Campground FINDS />
> http://www.gmceast.com/travel
>
> _
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| Re: [GMCnet] Solar daytime lighting [message #146480 is a reply to message #146462] |
Fri, 14 October 2011 09:44 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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Emery, Never underestimate the pursuasive power of subliminal advertising or
product placement in what we watch. Think of Nascar and all that stuff
flashing by at 200 MPH. The brain registers that stuff, even if the eye
cannot focus quickly enough. When Mary & I had our flower shop, we had the
2nd and 5th most valuable product logos working for us. That would be FTD
and Teleflora. Sold a lot of flowers. When FTD was sold they had to do an
evaluation of the worth of the Mercury man logo. It sold for over 2 Billion
dollars. Coke is way more valuable than that. Think GMC. Powerful stuff. But
"Smart" ???, Naaaaah, I don't think so.
Jim Hupy
Salem, OR
78 GMC Royale 403
On Fri, Oct 14, 2011 at 4:28 AM, Emery Stora <emerystora@mac.com> wrote:
> Ken
>
> I am very familar will conventional and tube type skylights. We sold
> thousnds of both kinds when I owned the window / door distributorship
> in Santa Fe which I sold in 1998.
>
> My comment was just questioning why the words "smart", "green", and
> "environmentally friendly" would apply to the tube type and not to the
> conventional skylights?
>
> Those words are now commonly used as advertising hype and there is no
> way that conventional skylights are not "smart, green, or
> environmentally friendly" as well. They both bring in solar light and
> energy without using electricity.
>
>
>
> Emery Stora
>
> On Oct 13, 2011, at 7:45 PM, Ken Henderson <hend4800@bellsouth.net>
> wrote:
>
> > Emery,
> >
> > When I built a duplex at the Methodist retirement community in '99,
> > for my
> > folks, uncle, and evenutally us, I installed "light tubes" in each
> > of the
> > four bathrooms. When we remodelled here last summer, I added them
> > to the
> > kitchen, utility room and one bath. Our master bath has a large
> > skylight.
> > Electric lighting is largely superfluous in those rooms during the
> > daylight
> > hours.
> >
> > There is no comparison between the light distribution from the 3'x4'
> > skylight and the 10" light tubes -- the latter are MUCH better. The
> > reflection of light from the polished sides of the tube, combined
> > with the
> > prismatic diffuser at the ceiling causes the light to be much more
> > effectively distributed.
> >
> > And the fact that the tube is sealed top and bottom reduces
> > convective heat
> > loss.
> >
> > And they're cheaper too. :-)
> >
> > Ken H.
> >
> >
> > On Thu, Oct 13, 2011 at 9:31 PM, Emery Stora <emerystora@mac.com>
> > wrote:
> >
> >>
> >> On Oct 13, 2011, at 7:01 PM, Dolph Santorine wrote:
> >>
> >>> Solatube Daylighting System and Tubular Daylighting Devices for
> >> residential or commercial daylighting and sunlighting needs are the
> >> smart,
> >> green and environmentally friendly alternative to traditional
> >> skylights
> >>>
> >>> Might have trouble headed down the highway, but they are great at
> >>> home.
> >>>
> >>> Dolph
> >>>
> >>
> >>
> >>
> >> I am curious. How is a conventional skylight not smart, green and
> >> environmentally friendly?
> >>
> >>
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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| Re: Solar daytime lighting [message #146495 is a reply to message #146430] |
Fri, 14 October 2011 12:25 |
 |
mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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Senior Member |
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| Mike O'Connell wrote on Thu, 13 October 2011 17:33 |
I wonder if something like this would be useful in those dark GMC hallways? ...
|
For the coach... no. But the water filled bottle might be good for any unlit storage sheds you have.
As others have mentioned, Most fan covers let in quite a bit of light. Others have installed skylights or sunroofs. I have even seen a sunroof in the bathroom of a side bath 23 foot coach. Lit up the bath nicely.
BUT...
Any holes in the roof have a tendency to leak so I am not that keen on putting any more holes in roof.
Still... I am wondering if a puck of plastic or glass would work in the hallway. Domed on each end and maybe with a hollow center to make it more thermally non-conductive.
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: [GMCnet] Solar daytime lighting [message #146504 is a reply to message #146475] |
Fri, 14 October 2011 14:30 |
Larry C
Messages: 1168
Registered: July 2004
Location: NE Illinois by the Illino...
Karma: 0
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Senior Member |
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Like the law of gravity, all skylights leak. Or seem to leak.
Don't get me wrong, we love ours.
The leaks are another story.
Dolph
I have owned two RV's, the GMC with 3 Fantastic Vents, and the SOB with 2 Vents. The only time I have had a leak was when they were left open. The body of the vent is solid plastic and it is sealed well at the lip where it is screwed on the roof. the screws are also double sealed with sealant.
The SOB had a KoolSeal roof and the KoolSeal was patched on with cloth over the vent edges and screws. the vent was like part of the roof, never leaked for 15 years cept when I left the vent open. My fault.
The GMC has the plastic cover over the vent. It was resealed well when the roof was cleaned and painted. Again, the only time I had a leak was when I left the vent open and snow blew inside. again, my fault.
Preventing the leak seems pretty cut and dry, did you try a different sealant? dont use cheap, they leak.
My experience
Gatsbys' CRUISER 08-18-04
74 GLACIER X, 260/455-APC-4 Bagg'r
Remflex Manifold gaskets
CampGrounds needed, Add yours to "PLACES" />
http://www.gmceast.com/travel
_
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| Re: Solar daytime lighting [message #146505 is a reply to message #146495] |
Fri, 14 October 2011 14:34 |
Larry C
Messages: 1168
Registered: July 2004
Location: NE Illinois by the Illino...
Karma: 0
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Senior Member |
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Why dont you try one of the boat ports, round glass, any size, some can be opened, but the fantastic vent is much easier.
If you are going to re-invent the wheel, you are in for a bit of work.. and it might still leak. If you do a good job, it wont leak.
Gatsbys' CRUISER 08-18-04
74 GLACIER X, 260/455-APC-4 Bagg'r
Remflex Manifold gaskets
CampGrounds needed, Add yours to "PLACES" />
http://www.gmceast.com/travel
_
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| Re: [GMCnet] Solar daytime lighting [message #146507 is a reply to message #146504] |
Fri, 14 October 2011 15:56 |
Dolph Santorine
Messages: 1236
Registered: April 2011
Location: Wheeling, WV
Karma: -41
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Senior Member |
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The comment was more in general that holes in the roof compromise the roof.
I have cars with Sunroofs (old ones leak, new ones are much better). Solatubes in the house (so far, so good), and hatches in the boat (hey, it's all wet).
I've not had the GMC leak, but I don't think I would want to add to the copious number of things that go through the roof on a structure that bends, moves and is exposed to the weather.
I won't use anything but the top of the line sealants. It's one of my hangups... I don't want to spend the time doing it twice.
Dolph
On Oct 14, 2011, at 3:30 PM, Larry C wrote:
>
>
> Like the law of gravity, all skylights leak. Or seem to leak.
> Don't get me wrong, we love ours.
> The leaks are another story.
> Dolph
>
> I have owned two RV's, the GMC with 3 Fantastic Vents, and the SOB with 2 Vents. The only time I have had a leak was when they were left open. The body of the vent is solid plastic and it is sealed well at the lip where it is screwed on the roof. the screws are also double sealed with sealant.
>
> The SOB had a KoolSeal roof and the KoolSeal was patched on with cloth over the vent edges and screws. the vent was like part of the roof, never leaked for 15 years cept when I left the vent open. My fault.
>
> The GMC has the plastic cover over the vent. It was resealed well when the roof was cleaned and painted. Again, the only time I had a leak was when I left the vent open and snow blew inside. again, my fault.
>
> Preventing the leak seems pretty cut and dry, did you try a different sealant? dont use cheap, they leak.
>
> My experience
> --
> Gatsbys' CRUISER :d 08-18-04
> 74 GLACIER X, 260/455-APC-4 Bagg'r
> Remflex Manifold gaskets
>
> ADD TO THE FUN-GMC'r Campground FINDS />
> http://www.gmceast.com/travel
>
> _
> _______________________________________________
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| Re: [GMCnet] Solar daytime lighting / Sealing the roof from LEAKS [message #146606 is a reply to message #146507] |
Sat, 15 October 2011 11:36 |
Larry C
Messages: 1168
Registered: July 2004
Location: NE Illinois by the Illino...
Karma: 0
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Senior Member |
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I've not had the GMC leak, but I don't think I would want to add to the copious number of things that go through the roof on a structure that bends, moves and is exposed to the weather.>SNIP<
I don't like to add holes to the roof of anything, but sometimes things have to be added. Sunroofs are just part of the fun and make the environment more fun and comfortable. They seem to seal in just fine if done right.
My PO had removed some stuff from the roof and used DUCT TAPE to seal the holes, nothing but DUCT TAPE. Well, it didn't leak up to the time I found it!!! So that has to say something for a temp fix if you need it.
Sealing protrusions from the GMC or any vehicle roof has to be done with support and sealed well. Generally I think the sealant needs to be sandwiched between two materials for best results. The roofing product I used on the SOB, and parts of the GMC use a cloth that gets drenched with roofing sealant ( its like paint ) and then formed around roof items, over the seams , such as the supports for the railing, around vent/roof seams, Sun roof seams, even the Air con opening, foam seal/roof seam. Once the application cured, the cloth looked like part of the roof after the applications, was rubbery and I never saw a failure or leak.
One point, the SOB had a flat roof and that rail edge thing with the rubber in it along the roof/siding corners on top. They told me to use the cloth over the roof edge, over the railing and around the side downward for about an inch. The edge rail overlapped the siding so I stopped at the edge of the rail ( over the siding ) that roof was pretty tight after that installation. In this case, the entire roof had been coated with the sealant, using the cloth at the seams as indicated. The roof material was white so it reflected the heat like mad. The ceiling was never warm after that. That treatment was still water proof after 15 years, when I retired the SOB.
As I said, I don't like putting holes in my roof but my experience has been that if it is sealed well, and I generally like overkill balanced with a good looking job when sealing, you won't have a roof leak unless you do something dumb like I did and leave the vent open. The vents can only do so much.
THE GMC used the sealing system that cars do, that is generally rubber between two metal pieces, compressed with a screw. That generally works since the vehicles are supposed to last about 10-15 years. Our girls have long passed that goal and the rubbers dry out and shrink, then tend to leak. The roof lights are a good example. I guess you choose the method you think is best and seal any possible leaks. Theres a lot of product out there, some good, some not so good. Everyone has their favorite and method of sealing the roof.
I would have no problem putting in a vent, though cautiously about sealing it to the roof, because the environment in the RV would be so much better. The problem I see with a regular vent in the hall might be the Bath door, it might hit it. My hall light is pretty close to that door top when it swings open.
just my thought
Gatsbys' CRUISER 08-18-04
74 GLACIER X, 260/455-APC-4 Bagg'r
Remflex Manifold gaskets
CampGrounds needed, Add yours to "PLACES" />
http://www.gmceast.com/travel
_
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| Re: [GMCnet] Solar daytime lighting / Sealing the roof from LEAKS [message #146617 is a reply to message #146606] |
Sat, 15 October 2011 13:27 |
Dolph Santorine
Messages: 1236
Registered: April 2011
Location: Wheeling, WV
Karma: -41
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Senior Member |
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Serendipity strikes!
It's "Football" weather. Sunny. Clear. 60 degrees or so.
My wife's comment? I would be really nice with a sunroof about here.......
Arrgh....
On Oct 15, 2011, at 12:36 PM, Larry C wrote:
>
>
>
> I've not had the GMC leak, but I don't think I would want to add to the copious number of things that go through the roof on a structure that bends, moves and is exposed to the weather.>SNIP<
>
> I don't like to add holes to the roof of anything, but sometimes things have to be added. Sunroofs are just part of the fun and make the environment more fun and comfortable. They seem to seal in just fine if done right.
>
> My PO had removed some stuff from the roof and used DUCT TAPE to seal the holes, nothing but DUCT TAPE. Well, it didn't leak up to the time I found it!!! So that has to say something for a temp fix if you need it.
>
> Sealing protrusions from the GMC or any vehicle roof has to be done with support and sealed well. Generally I think the sealant needs to be sandwiched between two materials for best results. The roofing product I used on the SOB, and parts of the GMC use a cloth that gets drenched with roofing sealant ( its like paint ) and then formed around roof items, over the seams , such as the supports for the railing, around vent/roof seams, Sun roof seams, even the Air con opening, foam seal/roof seam. Once the application cured, the cloth looked like part of the roof after the applications, was rubbery and I never saw a failure or leak.
> One point, the SOB had a flat roof and that rail edge thing with the rubber in it along the roof/siding corners on top. They told me to use the cloth over the roof edge, over the railing and around the side downward for about an inch. The edge rail overlapped the siding so I stopped at the edge of the rail ( over the siding ) that roof was pretty tight after that installation. In this case, the entire roof had been coated with the sealant, using the cloth at the seams as indicated. The roof material was white so it reflected the heat like mad. The ceiling was never warm after that. That treatment was still water proof after 15 years, when I retired the SOB.
>
> As I said, I don't like putting holes in my roof but my experience has been that if it is sealed well, and I generally like overkill balanced with a good looking job when sealing, you won't have a roof leak unless you do something dumb like I did and leave the vent open. The vents can only do so much.
>
> THE GMC used the sealing system that cars do, that is generally rubber between two metal pieces, compressed with a screw. That generally works since the vehicles are supposed to last about 10-15 years. Our girls have long passed that goal and the rubbers dry out and shrink, then tend to leak. The roof lights are a good example. I guess you choose the method you think is best and seal any possible leaks. Theres a lot of product out there, some good, some not so good. Everyone has their favorite and method of sealing the roof.
>
> I would have no problem putting in a vent, though cautiously about sealing it to the roof, because the environment in the RV would be so much better. The problem I see with a regular vent in the hall might be the Bath door, it might hit it. My hall light is pretty close to that door top when it swings open.
>
> just my thought
>
>
>
> --
> Gatsbys' CRUISER :d 08-18-04
> 74 GLACIER X, 260/455-APC-4 Bagg'r
> Remflex Manifold gaskets
>
> ADD TO THE FUN-GMC'r Campground FINDS />
> http://www.gmceast.com/travel
>
> _
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| Re: [GMCnet] Solar daytime lighting / Sealing the roof from LEAKS [message #146656 is a reply to message #146617] |
Sat, 15 October 2011 22:38 |
Larry C
Messages: 1168
Registered: July 2004
Location: NE Illinois by the Illino...
Karma: 0
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Senior Member |
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Serendipity strikes!
It's "Football" weather. Sunny. Clear. 60 degrees or so.
My wife's comment? I would be really nice with a sunroof about here.......
Arrgh....
Sounds like nice weather, maybe a tad chill but otherwise, nice.
If she is talking about the hallway, and you have the bath door in the mid section there, that could be a concern if any part of a vent is lower than the actual ceiling.
If you don't need a vent, the marine industry has those round hatches, ( they may call them something else ) that have the clear removable part. they seal well, let the light in, don't hang lower than the ceiling and you can take out the clear part and put in a screen on some. Not that big a job but be careful, there are water lines and electric running around up there crossing from one side to the other. In mine its about midway above the light fixture, but I recently found that the PO had moved some things around up there when he did his version of an upgrade, so yours may be different.
Just another possible solution...
Gatsbys' CRUISER 08-18-04
74 GLACIER X, 260/455-APC-4 Bagg'r
Remflex Manifold gaskets
CampGrounds needed, Add yours to "PLACES" />
http://www.gmceast.com/travel
_
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