For pitches of 2 5 12 up to 4 12 the roof requires double underlayment.
Low pitch roof covering options.
Flintlastic sa products feature easy and clean application and also have granulated surfaces with colors that coordinate with certainteed shingles providing the homeowner with a complete and coordinated solution for roof designs that transition from steep to low slope.
But in some climates such as areas of deep snow cover the property owner may prefer to convert to a more steeply sloped roof structure a procedure we describe at low slope roof conversion 3 4 5.
This top layer normally is tar over which the gravel is laid.
Made of several layers of bitumen surfaces built up roofing is finished by applying an aggregate layer or coating as the top layer.
It s constructed of a durable reinforcing mat of non woven glass fibers that have been coated and permeated to a thickness of approximately 2 0 mm.
Iko roof fast 95 base is a self adhesive product that can easily be cold applied on low slope roofs.
4 12 to 20 12 pitches.
Built up roofing is the most popular roofing material used on low sloped roofs.
For the smaller residential low slope roofing applications such as garage and porch transitions certainteed offers an excellent solution in our flintlastic sa self adhering sbs modified bitumen roofing system.
Their fasteners are either concealed or screwed at the top of a ridge which makes them less likely to leak.
For a low slope residential roof there are two main options.
But the taller profiles like standing seam and pbr shown below can be installed on roofs with as low as 1 4 or 1 2 in 12 pitch.
Slopes above 19 12 are not recommended since tiles on very steep roofs can rattle.
2 where the roof is not visible consider upgrading to a single ply roofing intended for low slope roofs.
Clay or cement tiles can be used on a wide range of roof pitches.