Divide 100 by the number of downspouts in order to obtain the percentage of water collected from each downspout.
Outline of existing roof.
Make a cutting on one of the sides of the horizontal roof beam on an angle.
Multiply the two figures together to obtain the square footage of your roof step 2 determine the percentage of water collected from each downspout p.
Place corner pieces where panels will meet bends at the edge of the roofing.
Count the number of downspouts coming from your roof.
A clerestory and hip roof for example.
But if you have an old home with a decaying roof especially a low pitched roof removing the old roof and replacing it may not be practical.
In this case you can build a new roof over the old with a caveat.
Step 1 determine the footprint of your structure f in square feet.
Measure along the length of the house or building and along the width of the house or building in feet.
You have to do it thoroughly so that the rafters sit flush on it.
Use 1 1 4 inch nails to cover the outline of the roof with strips of metal eave flashing also called edging.
We re happy to give you a free inspection.
Roofing over your existing roof is not always possible.
One way to minimize this problem is to go over the old roof and correct as many problems as you can before re roofing.
Installing a new roof over an existing one also called a layover or nailover is often possible although not always the best option a properly installed layover roof can look and function as well.
The only way to know for sure whether it will work for you is to ask a professional roofer.
Putting new shingles over existing problems can leave you with a rather unattractive new roof.
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Attach the horizontal beam by using a nail gun.
After that to make it flush with the roof of the existing house cut the two outer rafters.
For this type of wood it is most often seen when building a hostel in vietnam you can refer to alo nha tro for more details.
It s important to know that there are pros and cons to each of these options so we thought we d outline them for you so you can decide which option might work.
If there are gutters installed on the eaves the eave flashing should be installed to overhang the lip of the gutter by about 1 2 inch.
It doesn t take much more than a hammer some roofing nails and a handful of shingles to correct bumps gaps and protruding nails.
There are a few situations where roofing over an existing roof just isn t possible.