Roof Ballast Material

Roofs with pavers as ballast can be used as outdoor patios.

Roof ballast material.

Ballast stone traps a lot of dirt making patching difficult. Note that roof systems typically include more than one type of material a built up roof for example will typically include the built up membrane itself with or without gravel as well as some kind of insulation and cover board which will vary in thickness from roof to roof. The gravel in a ballasted roof helps absorb heat preventing the sun from heating the roof materials below and making the roof more energy efficient. Ballast options and flexibility.

It is however ballasted generally with gravel. A ballasted roof means that the roof membrane is not anchored or adhered in any way to the decking material. One of the advantages of using mm6125 in a protected membrane roof assembly pmr is that once the membrane is installed owners and designers can take advantage of various ballast options gravel pavers and garden roof to suit a specific project s needs. Additional benefits of ballast on a flat roof.

Adds a lot of weight to the roof system typically 10 15 pounds per square feet. Extremely difficult to find a leak in this system since the membrane is well hidden. Ballasted flat roofs are a popular choice especially for commercial buildings. Somebody walking on the roof will undoubtedly step on the ballast and put a hole in the membrane.

Magazine and roofing southwest although. Holes mean roof leaks and roof leaks mean call the roofer. Ballasted roof systems are simultaneously a roofer s best friend and arch nemesis.