Forum Discussion
deltamaster
Oct 23, 2014Explorer
skskarda wrote:deltamaster wrote:
Did you apply adhesive before setting the new plywood? I would have applied adhesive to the repair patch before sliding it in place for added support and strength.
Do you plan to screw the patch to the roof sheathing from the underside?
I haven't fastened it yet. I do plan to use adhesive. Ideally, I'd like to fasten screws from the bottom but I am a little paranoid about poking through the top and hitting the rubber membrane. I might screw from the top, countersink it just a hair and cover it with some silicone to prevent abrasion with the rubber membrane.
On second thought, the existing roof is so thin that I might have to fasten from the bottom. I don't know that screw threads would hold that material well but certainly the screw head from the bottom would. I'll have some wood glue and clamps on hand as well to make sure it holds long term.
You could alternate the screws, half from the top down and half from underneath up. If you get the right adhesive the screws will merely hold the boards together. Once the adhesive sets that will hold them together. Just make sure your screws are short enough to not go through the wood.
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