May Lead To Delamination Of The Roof Sheathing

Panel type roof sheathing may lift off the rafters in a regular pattern.

May lead to delamination of the roof sheathing.

Like blisters delamination can come from improper installation in inclement weather. It more likely may be the early stages of decay and delamination of the roof sheathing. Depression between the rafters. It may be mfgr.

In the attic the roof sheathing appears to be delaminating and some staining was observed. The attic was vented by soffit and a ridge vents. Roof decking plywood delamination if you have a home twenty five years or older you may want to consider the condition of the plywood. The soffits didn t appear to be congested with insulation however the ridge vent had a filter in place.

Delaminations commonly affect single ply and fully adhered roofs. It was plywood and had delaminated. High moisture levels break down the glue in the plywood and allow the plies to delaminate. If this is the case the solution is twofold.

3 8 plywood roof sheathing. I had my roof sheathing replaced a year ago. Between the years of around 1964 to 1975 homes being built saw the installation of what was first generation fire retardant plywood. To improve it make sure your home has continuous ridge and soffit ventilation.

This is sometimes accompanied by buckling. The worst cases result in patches of rot. Every re roof requires a close inspection of the substrate. This may be indicative of what.

De lamination of the roof sheathing may cause. That being said what the home inspector saw may or may not be mold. In the future looking for a date stamp on the affected sheet or other sheets in the same general area may help an apa rep. In determining if it is.

When the membrane and insulation separate. Leaks around deteriorated flashing are the most common. Incidental roof leaks particularly ones that go unnoticed can delaminate plywood sheathing or cause osb to swell. Defects in those sheets or it could be that the ventilation was blocked only at those sheets.

One of the implications of high moisture levels from either condensation or leakage is delamination of plywood sheathing. But probably not due to the amount of delamination. Particularly on the roof. What is the spacing requirements between the insulation and the roof deck sheathing at the location of the vent.

If the environment is humid moisture can get trapped between the membrane and insulation. The contractor thought it might have been due to excess moisture in the attic. What might delamination of the roof sheathing lead to.