Tpo Roof Interior Condensation Problems

And second the roof deck and rigid insulation form a reasonable interior vapor barrier.

Tpo roof interior condensation problems.

Roof condensation and roof leakage look the same. Triple wall should have no problem with tpo. Obvious or unforeseen roof problems are always a pain and undoubtedly a significant expense. 12 comments on problems with tpo roofing just the facts eric says.

However tpo roofing is combustable it will burn by itself whereas pvc roof will not burn if you remove the source of fire. You obviously should you the most insulated exhaust pipe that you can find. To recap the interior air has 40 of the total water vapor that it can support. Single ply membranes like tpo pvc and epdm.

Compositional problems tpo is mostly polypropylene and polyethylene but each manufacturer puts in different additives. It is the leading cause of the deterioration of trusses. Apple technical specialist with professional roof consultants. Typical additives include some form of rubber to make it flexible and.

And even shingles explains dale w. So maybe pvc is better for you. January 21 2020 at 3 53 pm does anyone know about ge silicone 3500 roofing system. One 1 of the four tpo roof areas in las vegas nevada has experienced problems with creases that have recently cracked or split the top coating over the reinforcing scrim.

Cool roofs can include asphalt built up membranes like fiberglass modified bitumen and torchdown. This is not a self diagnostic guide but rather an informative list of some of the problems most often battled. In the example shown above this would happen at 45 f and just inside the insulation layer. In the case of the timber trusses and purlins they will rot and eventually lose their stability.

The observation of liquid water within a roofing system does not necessarily indicate that vapor condensation has occurred. In general hot air welded seams continue to perform well at all four of the sites. I was going to do a tpo or pvc on an apt building but my roofer says he highly recommends this 100 silicone product over tpo or pvc. This applies to both the timber and steel trusses.

But as the air migrates up through the roof system it gets cooler until the point where it can no longer hold on to the water vapor and condensation occurs. Moisture may also enter the roofing system via leakage through cuts punctures loose seams and many other discontinuities in the exterior waterproofing layer of the roof. Cool roof temperatures may increase the possibility of condensation if warm moist air from the interior comes into contact with the assembly. First there is little air movement within the roof system to pump moisture laden air into the roof.

Buildings magazine examined which problems are most common and the conditions that can either cause or be the result of premature failure and reduced service life of low slope roof systems.