In this case you can build a new roof over the old with a caveat.
Outline of existing roof.
It doesn t take much more than a hammer some roofing nails and a handful of shingles to correct bumps gaps and protruding nails.
Divide 100 by the number of downspouts in order to obtain the percentage of water collected from each downspout.
Roofing over your existing roof is not always possible.
What a lot of people don t know is that when you get your roof redone you can choose to either shingle over your existing roof or tear off the original roof and start over.
Make a cutting on one of the sides of the horizontal roof beam on an angle.
Use 1 1 4 inch nails to cover the outline of the roof with strips of metal eave flashing also called edging.
You have to do it thoroughly so that the rafters sit flush on it.
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.
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The only way to know for sure whether it will work for you is to ask a professional roofer.
Attach the horizontal beam by using a nail gun.
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.
A clerestory and hip roof for example.
Count the number of downspouts coming from your roof.
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.
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.
Often incorporating two or more designs for aesthetics and practical reasons combination roofs can feature a range of styles.
We re happy to give you a free inspection.
Measure along the length of the house or building and along the width of the house or building in feet.
Putting new shingles over existing problems can leave you with a rather unattractive new roof.
A combination roof is quite literally a combination of types of roofs.
Step 1 determine the footprint of your structure f in square feet.
One way to minimize this problem is to go over the old roof and correct as many problems as you can before re roofing.
There are a few situations where roofing over an existing roof just isn t possible.
After that to make it flush with the roof of the existing house cut the two outer rafters.