Felt Roof Edge Detail

In all cases it is important to properly detail and install the edge conditions.

Felt roof edge detail.

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. 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. Without a drip edge water may end up beneath the shingles and may cause damage to various parts of the home. 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.

Drip edges are metal sheets usually shaped like an l installed at the edge of the roof. 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. Find and fix a leaking roof step 2. This lets any water that gets on the roof run down the underlayment and over the drip edge.

12 roof repair tips. Also called drip edge flashing or d metal they serve a vital function by directing water away from the fascia and into the gutter. Jj roofing supplies stock the biggest brands in the roofing industry enabling us to offer the widest range of roofing products. Video library flat roof edge and trim details with enviroflex.

To see the full range of brands we offer click here. The standard roof edge details illustrated in this section are generally applicable. Roofing felt is sold in rolls and the product label will give information on the area contained. 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.