Felt Roof Edge Detail

Roofing felt is sold in rolls and the product label will give information on the area contained.

Felt roof edge detail.

12 roof repair tips. A roof edge detail should be installed as specified by the designer at all flat edges of the roof where the field membrane ends and at internal and external gutters. Without a drip edge water may end up beneath the shingles and may cause damage to various parts of the home. This lets any water that gets on the roof run down the underlayment and over the drip edge.

Video library flat roof edge and trim details with enviroflex. Traditional asphalt impregnated felt roofing like that in our sketch above is installed overlapped a minimum of 2 3 inches single coverage or overlapped half its width or 16 inches double coverage or overlapped 2 3 its width to give a 12 inch exposure and a 3 ply roof or 3 4 of its width to give a 9 inch exposure and a 4 ply roof. Divide the area of your roof by the area of the felt rolls you plan to use and allow an approximate 10 extra for waste. These edges are built up using a triangular fillet of timber and a higher fascia board with a felt lip overhanging to prevent any rain water from going over the edge see edge detail 2.

If you install the drip edge on top of the felt any condensation or water running down the roof surface between shingles and felt will run underneath the drip edge down the fascia and perhaps into the building soffit or walls not a nice thing. To see the full range of brands we offer click here. Find and fix a leaking roof step 2. In all cases it is important to properly detail and install the edge conditions.

Always try to carry membrane felts over or up and over and down to ensure the roof membrane will always drain free and clear of any adjacent system. Where the edge of the roof does not feed into a gutter and does not abut a higher vertical wall these are referred to as verge drips. Jj roofing supplies stock the biggest brands in the roofing industry enabling us to offer the widest range of roofing products. The best way is to install the roof drip edge only along the eaves first then place ice and water barrier in the snowbelt or felt paper underlayment over the drip edge.