Would A Roof Sag If Plywood Got Wet

Remedies for a sagging roof there are a number of remedies for traditional rafter style roof frames depending on the problem and its severity.

Would a roof sag if plywood got wet.

Dwight barnett answers home improvement questions. It is possible that the top side was wet when they put the roofing materials on and over time the wood got soft and sagged. With the shingles on it sill still breathe. Rafters run from the peak of the roof.

Soaking wet roof decking osb roof sheathing gets rained on all the time up here and roofs are the first cover to go on a framed structure. I thought i would share my experience and how i managed to save those sheets. The roof was put on in late 1997 so it isn t very old at all. Often the framing can be bolstered and beefed up internally but if the roofing material needs replacement anyway it may be best to tear off the old sheathing and install larger rafters while the roof.

Roof problems may have started with wet plywood originally published april 28 2012 at 5 00 am updated april 28 2012 at 7 01 am home fix. Also with that amount of rain plywood and osb may have some swelling at the edges and a thorough inspection of the panels should be done after the panels have completely dried. Roofs are framed with rafters or trusses which are rafters joined by internal braces so they install as a single component. When the air underneath circulates it will dry.

Some problems relating to a sagging roof line should definitely be evaluated by a professional in the roofing industry. When the sun shines it dries. Plywood can get wet over short periods of time and be dried out and still maintain its strength and finish. The minimum plywood for roofing.

My neighbor had an additional 3 8 layer of plywood added. The underside will breathe. Also there don t seem to be any sags or dips on the east facing side of the roof or if there are they are much smaller and barely noticable. I haven t had any problems and the house is 40 years old but it bothers me when i walk on the roof and feel the roof sag under my weight.

This raises a question can plywood get wet. 15 and 30 felts will breathe. The top 3 sheets of plywood got wet and were actually soaked in water.