Three easy Steps

Single Ply Roofing

Single ply, or membrane roofing, is most commonly used on commercial buildings, but residential usage of this material is increasing. This material is best used on a flat or slightly sloped roof. Membrane roofing is not like the old asphalt roofing that had so many problems with leakage and breakdown of the material due to exposure to extreme weather conditions and UV rays. Membrane roofing is made of synthetic rubber that comes in large, flat pieces. While the average roof is replaced or repaired every 8 to 10 years or so, membrane roofing can last 20 to 25 years or more.

Why? Unlike asphalt roofing, membrane roofing is directly attached to the building structure and the seams are welded, melted or bonded together, resulting in a much more weather-resistant roof. The lighter colors available also reflect instead of absorbing damaging UV rays. This material is better with draining water off roofs and more puncture-resistant than the old style asphalt roofs.

There are 3 types of Single Ply roofing

Thermostat: Thermostat roofing is a synthetic rubber material that is laid in rolls. The seams are then welded together forming a very strong, waterproof bond. This material usually comes in thicknesses between 30 and 60 mils.

Thermoplastic Membrane: This is similar to synthetic rubber or PVC, and the seams overlap when they are ‘melted’ with either heat or a solvent, also forming a very strong, waterproof bond. This material is available in a variety of colors. The lighter colors are more energy efficient because they are more reflective, thus saving energy. This material is also flame resistant and puncture resistant.

Modified Bitumen: This material evolved from asphalt roofing. It is made of asphalt and a mixture of other materials. The seams for this can be sealed using either hot or cold application processes. One type of modified bitumen roofing is known as Prelasti and can be used to create a ‘green roof.’ This is a roof where you can place soil and grow plants, reducing energy consumption and carbon emissions. Modified Bitumen roofing can run from $5 to $10 per square foot, not including installation.

More Single Ply Roofing Positives

Membrane roofing materials resist the constant expansion and contraction from fluctuating temperatures that cause the flat asphalt roofing to quickly deteriorate and allow leakage. The UV reflection can also reduce your energy bills, so be sure to check and see if the material you select has an Energy Star rating. You may be eligible for a rebate or tax credit. Another advantage over the asphalt is that leaks and cracks are much easier to find.

Don't Forget!

While these rubber membrane roofing materials are a great upgrade from asphalt, they do not do the job if you don’t invest in a high quality product, usually the thicker the better. Also, if your roofer is not specially trained and very knowledgeable about this product, you can have complications that compromise the long term durability of the roof resulting from poor installation procedures.