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.

Contribute to air circulation under the roof membrane which material would you be least likely to see being used as roof deck. It is however ballasted generally with gravel. Despite the positive qualities associated with a ballasted roof system there are some challenges. 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.

The gravel top coat is also extremely resilient to heavy foot traffic and high wind scenarios. The ballast is used to keep the roofing system cool and of out of the sun s harmful rays thus keeping energy costs down. A ballasted roof means that the roof membrane is not anchored or adhered in any way to the decking material. In roofing applications ballast can perform all of the following functions except.

Roof membrane roof ballast if needed drainage flashing. Roof can have other functions decks parking solar array green roof disadvantages water drains slowly slight structural movements tear the membrane. Ballast also protects against hail and from foot traffic during repair or maintenance work. Which material would you be least likely to see being used as a roof deck.