How to Install Roll Roofing on Low Slope Roofs

If you are unsure of how to install roll roofing on a low slope roof, you should follow the simple steps outlined below. First, mark the end of the first layer with a chalk line. Next, use a trowel to spread roofing cement along the edges. Next, measure 32 inches above the first layer and overlap the nailed roof shingles with roofing cement. Finally, seal the entire roll roof by applying roofing cement.

The second sheet of roll roofing should overlap the first one by four to six inches, or about ten to fifteen centimeters. Install the second sheet using your chosen method. You may find it useful to draw a chalk line on the first sheet so that you can accurately position it while you are applying roofing cement. Once the first sheet is in place, overlap the second one by four inches and install the final sheet.

Before installing the second layer, you need to lay the base course. First, measure 35 inches up from the eaves. Then, mark every 35 inches along the roof. Place a chalk line at each interval and use it as a guide while applying the roll roofing. Once the base layer has been installed, attach the second course to the lower layer using nails or sticky adhesive. If the roll roofing is uneven, use extra nails to secure it in place.

In addition to a flat foundation, you should also consider the underlay. Although this is not strictly necessary, it will protect the roll roofing from moisture. The underlay should be smooth and flat so that it does not buckle or wrinkle. If the roof is steep and you are concerned about the slope, you may want to opt for a textured roof instead. However, it is important to consider the cost of the underlay before you install roll roofing on your low slope roof before choosing this material.

The most common color of rolled roofing is black MSR. However, it is not as durable as other roofing materials, and it is considered the least attractive of the two. It is also cheaper and is easier to install than asphalt shingles. But if you want your roof to look aesthetically pleasing, you should choose asphalt shingles. Despite its lower price, the cost of asphalt shingles cannot compare with the sophisticated look of rolled roofing.

Although roll roofing is suitable for a variety of low slope roofs, it is not recommended for a steep-sloped roof. The surface of the rolled roofing should be level with the eaves and rakes. In order to install rolled roofing, you should make sure that the slope is at least one inch per foot. If you are not comfortable with a steep slope, you can use a concealed nail fastening method.

If you are installing roll roofing on a low-slope roof, make sure to cover the decking with a waterproof underlayment. Usually, GAF Liberty(tm) one-ply SBS roof system requires four-ply exterior grade plywood decking. Contact GAF Technical Services if you are uncertain of the type of decking you need to install roll roofing over. The advantages of using an underlayment over traditional shingles include the secondary water-resistant ply that helps protect your roll roofing from the sap in wood decking. Some code bodies require the use of underlayment for residential roofing projects, and Shingle-Mate is a good choice.