Residential low slope roofing can generally be divided up into two broad categories.
Fluid membrane in low slope roofs.
This means for every 12 horizontal units the roof must rise a minimum of one fourth vertical unit.
Liquid membrane roofing systems.
Finding the right products for your low slope roof.
Modified bitumen membrane roofs must have a design roof slope of 1 4 12 or greater 2 slope.
The life of structurally sounds roofs through their ability to eliminate many failure points associated with many aging low slope roofs.
Inverted low slope roofing assemblies often include hot fluid applied membranes and cold fluid applied membranes.
For a low slope residential roof there are two main options.
For this type of roof shingles and other traditional coatings are less durable and less aesthetic.
These membranes are particularly effective for roofs with a very low slope between 1 8 12 1 and 4 12 33.
Technically we are talking about low slope roofs that have a slope less than or equal to 3 12.
Larger flat roofed applications low slope such as residential condominium complexes row homes and town houses and smaller applications such as residential porch and garage transitions from the main home where the slope of the roof changes dramatically.
When we say flat roof we don t mean perfectly flat which is undesirable since water still needs to be shed to roof drains.
With about 22 of low slope commercial roofing projects using metal systems according to scott kriner technical director of the metal construction association we wanted to see how metal compares.
The use of the self adhesive base ply membrane sa smooth ply 40 as a first layer and the self adhesive granulated cap sheet membrane sa cap gr or sa cap fr gr as a second layer is an ideal solution to ensure the waterproofing of low slope roofs.
1 cover the entire surface with a self adhesive flashing membrane such as grace ice water shield there are many equivalent products.
Then apply standard asphalt shingles over the membrane.
For this type of roof shingles and other traditional coatings are less durable and less aesthetic.
This patented technology provides a durable finish with the ability to match existing roofing compositions.
Minimum roof slope roof pitch r905 11 1.
Concrete is electrically conductive.
Thermoset single ply roofing minimum roof slope roof pitch r905 12 1.
As with single ply membranes there are toxicity concerns around some of the materials involved particularly coatings.
Get to know more about one of the most popular commercial roofing systems.
Inverted roofing assemblies where the waterproofing membrane is applied directly to a structural concrete slab can be effectively eld tested without modifications to the roofing assembly.
Learn about liquid membrane roofing systems.
The roofslope auxiliary sloping compound provides a quick and easy way to fill in low spots on flat roofs and achieve positive slope to aid in proper drainage.
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.
