| [GMCnet] Restoration. Replacing your ceiling panels. [message #298851] |
Sun, 10 April 2016 01:59 |
BobDunahugh
Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA
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This info is old hat for some. But new owners might find it informative. I think from what I have found over the years. And this 78 GMC Royale is no exception. That there has been water infiltration at some point. And this seems to be the major problem of mold, and odor. What can make the replacement of these panels a much simpler project. Is to remove the old ones carefully. As they make great templates to trace out the cut lines on the replacement panels. I used some 1/4 inch Luan plywood for the ceiling panels. Need 5 sheets at $14.98 each at Menards. Simple to cut. And bends well to conform to the curves of the roof. There's a plastic cardboard that you can get from sign companies that also could be used. It makes more dead air space for added R value. I did all this work at the start of dismantling in late Nov. A Little over 3 months ago. In this way I could discard the old ones right away. I traced, and cut the panels. Then put an exterior paint on the back sides to keep moisture expansion down. And reduce the chance of odors from being absorbed, or developing. Then put a coat of exterior urethane on the front side. Same reasons as the back. But it would help the contact adhesive bone to the wood. When I install my headliner later. The ceiling panels must be cut to 73 and an 1/8 inches. This will force the panel to conform to the roof structure shape. And force them to fit properly into the support slots on each side. To get the panels to engage the slots. You have to bend the panel like a wave. Then use a 1 inch long, large headed, self drill/tap philips screws to attach to the roof structure. Lowe's has them in boxes of 50. $4.98 each. You'll need two boxes. I did install an R-4 radiant bubble wrap insulation. Using a special aluminum tape. I took the approach that creating more dead air bearers had to help. I didn't want to disturb the foam insulation that's already there. As that original foam helps the rigidity of the structure, and reduce vibration transfer. Any questions. Feel free to call anytime. Cell 319-521-4891Bob Dunahugh78 GMC RoyaleMember GMCMI
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