Roof Ballast Depth

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Roof ballast depth.

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. 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. Adds a lot of weight to the roof system typically 10 15 pounds per square feet.

Ballast stone traps a lot of dirt making patching difficult. Ballast stone fractures and gets sharper over time which can puncture the. Generally loose laid ballasted roofing systems are not recommended or at least discouraged for three reasons. 1 a leak is very difficult to locate because the water runs freely in numerous directions and for longer distances under the loose laid membrane.

Flat roofing is not actually flat. 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. Or you may call us at 440 946 2233. Extremely difficult to find a leak in this system since the membrane is well hidden.

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. 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.