How many layers of roofing are allowed on a flat roof?

Any amount of short-term savings you may see in a “scale” roof installation is NOT greatly offset by the long-term peace of mind that comes from knowing that the integrity of the platform has been confirmed. For flat roofs, materials such as EPDM and TPO are usually approved to use up to two layers. It is best to let a professional know how to take witness samples to determine roof layers. Most flat roofs have two to four layers, excluding a reflective coating.

Repairing a leaking spot is more complicated than an untrained eye would find. Let's talk about built roofs, drainage systems and roofs. On most flat roofs, such as EPDM, TPO or modified, it is perfectly acceptable for two roof layers. However, in almost all areas it is not acceptable to install more than two layers of roofing in any commercial building.

We have been installing, repairing and maintaining high-quality roofs for residential and commercial property owners and managers for several years. When buying a new roof overall, you should consider whether you want to keep your current type of shingles or if you want to upgrade it. Your low-slope roof does not need to have any prescribed number of layers to be effective or within California building codes. Roof weight is worrisome, roof trusses and covers can only support a limited number of roofing layers.

The type of roofing materials used should be chosen based on the type of building, the location and the type of roof. A new roof is placed on a flat surface and should not show drops and elevations as dramatic as a layer would on top of them, especially if high-strength shingles are not used for the second layer. Adam Vaillancourt Roofing is a BBB accredited company with an A+ rating and the highest accredited rating from CertainTeed and Owens Corning. Don't wait for the roof to collapse or for water to leak into buckets full of water in your home before you do anything about it.

If you're unsure of the answers to questions about your flat roof, talk to your local roofing professionals. A “flat roof” is installed at a very subtle angle to make it appear flat, but it actually contains a slight slope. The second layer of shingles would also need to be heavy shingles to hide gaps and higher points in the roof. This gives your contractor the opportunity to inspect the integrity of the platform to see if it can support your new roof.

This means that if there is damage to the bottom layer, the roof is vulnerable to ingress of water and ice below both layers. Adding more weight than your roof is designed to cause structural damage to the building and cause a dangerous situation for anyone in it.