GARDEN ROOF

Considering the addition of a garden roof to your existing structure or new build? Let National's team of certified Green Roof experts tailor a plan to meet your needs. Read more

Modified Bitumen (MB) roof systems, like Built-up Roof Systems, are designed primarily for low-slope or flat roof structures, however instead of alternating 3-5 layers of bitumen and membrane, a polymer-bitumen impregnated membrane is rolled out and applied in two layers through either a hot-mop, torch, or cold adhesive process. Like the traditional BUR systems, there are numerous surfacing options, including mineral, gravel and highly-reflective Energy Star rated “cool roof” coatings which can help save on building cooling costs.

The latest innovation with MB is self-adhering sheets, which contain a release paper back so as the sheet is rolled out, it adheres itself to the substrate. This method eliminates any risk associated with the use of hot asphalt and is free of VOC (volatile organic chemicals) fumes during and after application.