Minimum Slope For Single Ply Membrane Roofing

The resisto single ply roofing system is guaranteed for 15 years against any manufacturing defect that may cause leaks.

Minimum slope for single ply membrane roofing.

Table 1 01 1 chart of roofing system applicability thermoplastic single ply membranes back nailing table 1 03 1 back nailing requirement for sloped roofs table 1 04 1 the minimum fastener pullout resistances for specific systems. This means for every 12 horizontal units the roof must rise a minimum of one fourth vertical unit. Sprayed polyurethane foam roofing. Thermoplastic single ply roofing minimum roof slope roof pitch r905 13 1.

This warranty applies to low slope roofs that use the outer perimeter instead of a drain to evacuate water. Heat welded seams provide superior strength. The slope of the roof must not be less than 1 12 8. Roofing membranes that are single ply such as a pvc tpo or epdm requires a thin layer of a compatible single ply adhesive to be used as a primer for roofslope.

The minimum slope for a flat roof is 1 4 per foot or 1 4 12 but some owners or insurance companies require a minimum slope of 1 2 per foot. Single ply membrane has a weft insertion anti wicking scrim with a density of 18 by 14 threads per inch among the highest in the industry. These membranes are particularly effective for roofs with a very low slope between 1 8 12 1 and 4 12 33. Short for thermoplastic polyolefin tpo is a single ply roofing membrane that offers excellent performance at a cost effective price.

A minimum slope of 0 25 inches per foot 2 percent is recommended for all low slope roofing systems for adhered systems the substrate must be one that is approved by the system supplier. The use of the resisto self adhered waterproofing membrane as a first layer and the resisto granulated cap sheet high resistance hr cap sheet as a second layer is an ideal solution to ensure the waterproofing of low slope roofs. Thermoplastic single ply membrane roofs must have a design roof slope of 1 4 12 or greater 2 slope. Higher density products provide improved impact resistance.

This 1 4 12 minimum roof slope requirement also applies to spray polyurethane foam spf roof. Apply a single ply adhesive that will adhere to the existing membrane as a primer thick enough to accept a full broadcast of 16 grit silica sand or granules. Unique in the industry duro last offers a 15 year warranty with consequential damage coverage for duro last prefabricated roofing systems with no additional charge. Tpo s long term heat uv and natural fungal resistance plus flexibility without need for plasticizers also make tpo a reliable low slope roofing system.