Roof Membrane Shrinkage

What is roof shrinkage.

Roof membrane shrinkage.

In fact it is common for some cheaper tpo roofs to develop cracks in the surface relatively quickly. This includes cracks crazing splitting and ridging of shingles. Epdm is a relatively sturdy rubber membrane and is often used to seal vehicles windows and you guessed it roofs. Rather it refers to the shrinkage of the membrane that coats your roofing materials.

Generally the membrane composition and properties were found to not change sufficiently to cause excessive shrinkage. Epdm roof membrane shrinkage. How can it be avoided. Otherwise it is all to easy to fall victim to problems caused by incorrect installation such as shrinkage for example.

As the membrane shrinks it can begin to pull away from the flashing thus creating openings for leaks. As mentioned earlier incorrect application of the roof membrane is one of the causes of premature epdm shrinkage. Although epdm is one of the sturdiest rubber membranes that you can use it s still prone to shrinking over time. All components must be attached uniformly and securely including membrane to insulation insulation to vapour barrier.

Its causes include aging of the material poor installation and uv exposure. Roof shrinkage commonly occurs on roofs with synthetic rubber membranes such as epdm. The paper presents conclusions and recommendations for existing roofs. Your membrane is what protects your roof from hot and cold temperatures as well as from extreme weather.

Several factors can hasten epdm shrinkage including incorrect application poor manufacturing and faulty roof design. This is due in part to the fact that the top layer of the material is laminated. Shrinkage is most common on epdm or modified bitumen roofs. All insulation stops and.

Some common reasons for shrinkage are. In some instances shrinkage can also damage wall masonry. Roof shrinkage affects roofs that rely on synthetic rubber membranes most commonly ethylene propylene diene monomer epdm. To help prevent shrinkage problems the following guidelines should be followed in preparing drawings and specifications and installing built up roofs.

Roof shrinkage refers to the shrinking of the membrane of your roof. A few decades ago unreinforced rubber roof systems were plagued by shrinkage problems but thanks to technological advancements and improvements to epdm roofs the problems have diminished. Membrane shrinkage can also cause visible damage to the roof surface. Laminating any material introduces weak points that can cause the material to shrink crack craze and deteriorate over time.

Damage to the roof s surface. This coats the roofing materials and provides something of a protective layer for the roofing materials. When it shrinks your roofing materials be they roof shingles or metal roofing are subject to cracking tearing ripping and ridging.