Roof Ballast Depth

Generally loose laid ballasted roofing systems are not recommended or at least discouraged for three reasons.

Roof ballast depth.

Ballast stone fractures and gets sharper over time which can puncture the. 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. It has a very low slope between 1 4 to 1 2 inch per foot so that it drains water. To learn more about selecting a commercial roofer in cleveland ohio simply fill out the form on this page and a member of our team will be in touch.

Adds a lot of weight to the roof system typically 10 15 pounds per square feet. Flat roofing is not actually flat. The weight on a ballasted roof can be from 10 to 25 pounds per square foot meaning the substructure must be designed specifically to carry more weight than other roofing systems. 2 the membranes tend to pull at their perimeter ties raising and stretching the.

It can also be a bit challenging to find a leak with a ballasted roof system and because the stones tend to collect a lot of dirt patching it can be a bit difficult. Ballast stone traps a lot of dirt making patching difficult. But such a low slope holds snow and water much longer than a steeply pitched roof and therefore needs a very different material to stay watertight. Drawbacks of a ballasted roof system.

Though not as common as they used to be ballasted roof systems still prove to be a viable solution for today s commercial roof needs. Extremely difficult to find a leak in this system since the membrane is well hidden.