How Much Roof Overhang For Gutter

If a roof s various drainage areas call for different size gutters go for the biggest one k style.

How much roof overhang for gutter.

These form when show melts but then re freezes at the edges of the roof which typically get less heat from inside the building. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage. In our local area metro jackson ms the typical overhang is about 12. 5 inch 5 520 square feet.

Most roofing contractors recommend some method to prevent ice dams on metal roofs. The reason for this is that whenever rain runs down any type of roof when it gets to the lower edge it clings to the tile or slate by capilliary action this means that the water actually runs around the bottom edge and slightlly back up the rear of the tile before gravity allows it to drop into the gutter. There is a thing called wicking that if on a low enough slope will run up the underside of roofing and possible go up enough to get behind facia so usually wi. A typical 120 foot long roof edge with 6 12 overhangs and no gutters deicing will need about 291 feet of cable.

Wide overhangs will protect your home s exterior wall better than a short overhang or no overhang at all. Unless the roof edge is quite uneven some shingles overhang significantly more than others it should have the same stickout all along. Shingle manufacturers say to use a 1 4 to 3 8 inch shingle overhang over the eave where your roof ends. Steeper pitched metal roofs typically do not require much overhang because snow and ice slides off the smooth surface so easily.

And what is the pitch. Then use the information below to see what size gutter you need. With us average electric price of 0 13 kwh you will be spending 7 25 per day if your system is running full 24 hours. Without gutters water cascading over the roof s edge can wash down the side of your home especially in a windy rain event.

Not good to start off with a new roof and gutters with this problem built in. Do you have edge metal. We ve seen other references that suggest extending the shingles a bit more than the manufacturers suggest to compensate for wavy eaves but they do not.