Short for thermoplastic polyolefin tpo is a single ply roofing membrane that offers excellent performance at a cost effective price.
Blistering in tpo roofing.
Tpo also lost its competitive advantage by using peel stick flashing.
In summary blistering and bubbling are common coating problems that occur for several different reasons.
What it comes down to is science versus commonality and companies warranties.
Whilst bubbles or blisters on a one piece epdm roof can be unsightly they will not cause the rubber membrane to fail.
While this article presents and discusses the osmotic mechanisms that produce blisters bubbles have several causes.
The heat of the sun during the day causes the gas to expand.
Tpo s long term heat uv and natural fungal resistance plus flexibility without need for plasticizers also make tpo a reliable low slope.
The most common cause of roof bubbling is poor installation of the roof.
These bubbles of trapped air moisture can be caused by a variety of issues which are all avoidable if the roof design is correct and the membrane is correctly installed.
Blisters are the most common roofing problem.
The expansion of the gas creates a pressure within the system that pushes the plies apart.
The rv manufacturer simply didn t apply the adhesive evenly or left some dirt on the roof that the adhesive couldn t stick to.
Tpo roofing systems 101.
Blistering roof shingles have been and continue to be the most controversial subject matter in the roofing industry.
Now tpo is more like epdm rubber with heat welded field seams.
Causes of blisters all conventional low slope roof systems experience blisters in some form.
This area can fill up with air or water to form a blister which looks like a bubble on your roof.
It s no longer a truly heat welded system but is a hybrid of welded plus glued roof.
Must see cutting open leaking roof blister on a brand new flat roof in toronto leaking flat roof duration.
At 1 66 per square foot generic tpo is 13 more expensive than high quality brand name pvc so the price war is lost.
A roof blister is a raised area where there is a loss of adhesion of the roof.
They occur when a gas usually water vapor is trapped within the roofing system either between the plies or between the plies and the insulation.
Membrane systems are most susceptible to blistering because blisters are formed by voids between the plies or at the point between the substrate and the membrane.
Roof bubbling is just what it sounds like spots where the rubber has lifted off the surface of the roof and formed a bubble or blister.
There are differing opinions as to the damage that can result from blisters and bubbles.
You may find yourself getting an unclear answer as to whether or not these blisters are damaging or simply just cosmetic defects.
Heat welded seams provide superior strength.
