Which Of Following Is A Function Of The Roof Ballast

Built up roofing system in roofing applications ballast can perform all of the following functions except contribute to air circulation under the roof membrane.

Which of following is a function of the roof ballast.

Which material would you be least likely to see being used as a roof deck. Despite the positive qualities associated with a ballasted roof system there are some challenges. Although single ply roofs inherently have sun protective qualities ballast provides an extra layer of protection from uv rays. A ballasted roof means that the roof membrane is not anchored or adhered in any way to the decking material.

Because the ballast stones are loose laid and not embedded into a layer of tar asphalt the gravel is easy to move when conducting repairs or maintenance. Decking materials performance requirements. It is however ballasted generally with gravel. In roofing applications ballast can perform all of the following functions except.

Roof can have other functions decks parking solar array green roof disadvantages water drains slowly slight structural movements tear the membrane. When the concept first came to the u s plenty of roofers scratched their heads and wondered how the roof stayed on without being anchored especially during high winds or storms. Roof membrane roof ballast if needed drainage flashing. The ballast is used to keep the roofing system cool and of out of the sun s harmful rays thus keeping energy costs down.