Low Slope Roof Pitch

Some roofs have extremely low slopes and appear to be nearly flat.

Low slope roof pitch.

Take a measurement of 12 inches using a level. Steep slope roofing systems are also known as residential roofing systems and in their classification they are roofs with a slope of 21 12 and higher. A roof has a low pitch if it slopes anywhere from 2 12 to 4 12 inches meaning that for every foot the roof extends horizontally the level of the roof rises two to four vertical inches. It determines how many inches the roof should rise for every 12 inches expanding on the horizontal side.

Low pitch roof systems and steep slope roof systems there are two types of roofing systems low slope roofing systems and steep slope roofing systems. Before taking any measurements you must first confirm that it s safe to walk on your roof. Some people prefer high pitches and some other choose low roof pitches each has their own advantages and disadvantages. Flat roofs 0 to 2 in slope are flatter than low sloped roofs and pitch just enough to drain water.

Self adhesive flashing membrane under the shingles prevents leakage on low slope roofs. Iko roof fast 95 base is a self adhesive product that can easily be cold applied on low slope roofs. 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 from steep slope to low slope on the same structure. Their fasteners are either concealed or screwed at the top of a ridge which makes them less likely to leak.

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. Residential low slope roofing can generally be divided up into two broad categories. Take the measurement of the vertical. Actually most flat roofs are not dead flat and in good design also include slope towards their drains.

Low slope structural roofing generally used on roof pitches ranging from 12 to 3 12 consists of interlocking panels commonly called standing seam roofing that run vertically along the roof surface. In our photo left the roof slopes less than 1 per foot notice that dark ponding area at the center of the photo. For a low slope residential roof there are two main options. Roof pitch is the degree of building s roof slope.

Position your level against the roof until the bubble of the vial sits between two lines. No roof of course should actually be completely flat. Then apply standard asphalt shingles over the membrane. 1 cover the entire surface with a self adhesive flashing membrane such as grace ice water shield there are many equivalent products.

These panels generally come with a painted mill finish or a clear acrylic finish.