How To Fix Plywood On Roof If Theres Plywood Clips

Any ideas on how to fix this.

How to fix plywood on roof if theres plywood clips.

I suspect that the plywood used was cheap quality or too thin. For bats they make 1 way doors that you attach to allow them exit but not come back in. Some older h clips do not provide a built in gap. Cut off blistered or peeled laminates from the main board using the router.

Our roof sags a little between the trusses near the peak on the west facing side of the house. H clips provide additional stiffness between bearing points for the unsupported edges of wood panel plywood or osb roof sheathing along with the necessary 1 8 gap for expansion as shown below illustrated on a bag of simpson h clips. The h shaped fins slide over the plywood until the middle connecting section is against the plywood s edge. The plywood is nailed to the roof rafters and unless the builder used a tongue and groove plywood or h clips the long edge can warp in between each rafter.

If your home has plywood decking below your shingles and the plywood was not nailed properly. Position plywood clips onto the top or upper horizontal edge of the installed plywood panels between each rafter or support block. If there is moisture built up under the ply roof sheathing due to inadequate attic ventilation coupled with poor vapour diffusion retarder membrane then the moister side of the ply will swell more than the dryer side causing convexity cupped up. Just joined the forum.

From the inside there doesn t appear to be any water damage or rot. Put it there for a while to let all the critters out and then remove it in favor of a permanent fix. In response to jfmann and pdhal3 the problem may well be differential moisture as jae suggested. Not always required but a good idea.

Cut off the blister or peel it completely back until the damaged laminate is flush with the main board. Next if you are looking for a quick fix that should last until the next time you replace the roof you could always use some spray foam. This is a easy problem to diagnose but not very easy to fix. Sand the edge of the cut until the edge tapers onto the surface of the underlying laminate.

These long raised up sections are from improperly nailed roof decking. The fix on this is something that can be very intrusive.