Maximum Gap In Roof Sheathing

If asphalt shingles are installed over sheathing with gaps exceeding 1 4 inch over time these gaps may telegraph through and become visible.

Maximum gap in roof sheathing.

So you re talking about you re going to reroof and you have a gap between the wall sheathing and the roof sheathing. Nailing accuracy is crucial along this member. Yes a 3 8 inch gap is a pretty good gap to start with. It looks like when the guy used his chainsaw to cut the piece of wood he didn t go in a straight line lol.

Method for maintaining a continuous load path at the roof ridge by nailing roof sheathing. Tighter nail spacing is recommended 4 inches on center maximum. The critical fasteners occur at the gable framing member not necessarily at the edge of the sheathing. It takes 36 nine 4 panels 8 gaps of wall before the panel creep has moved a full inch which is probably the absolute limit.

I expect that you will find many similar roofs that are performing very adequately. Can something like expanding foam sealant be used to fill the gap. The recommended maximum gap between roof sheathing boards for low quality 3 tab shingles is 1 4 inch. If i were you i would cut a piece of similar wood and glue screw it to cover the hole.

Ridge vent installed on roof. One easy solution that would resolve the issue of the gaps and would provide more diaphragm strength would be to staple 1 4 plywood to the existing sheathing. However it is considered good practice to leave a 1 8 gap between sheets and that is also recommended by apa but it is not required. The sheathing was not cut out in attic for this venting system.

As it stands now the ridge venting system is not completely operable. Now wait a minute. Recommend proper repairs by licensed roofer to ensure proper ventilation. Roof sheathing and the gable truss.

The gap between the boards is most likely due to shrinkage of the wood as it dried out. The exterior face of the foam sheathing will be the water control layer and there will be a gap there must be a gap between the cladding and the exterior face of the foam sheathing.