If you re going to add a roof on top of an old one it s a good idea to remove any loose shingles and apply a new layer of 30 pound roofing felt before laying the new shingles.
How to remove old roof shingles.
Continue tearing off the shingles and underlayment until you reach the roof jacks then start over at the top of the roof.
Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros.
Find a pre screened local roofing contractor.
There s anecdotal evidence that new shingles installed over old shingles won t last as long as a single layered roof most manufacturers offer the same warranty for both methods.
In some cases you can get away with that but if your roof already has two layers of.
Call for free estimates from roofing pros now.
Pry off old roof shingles with pitch fork.
The shingles will roll up like a ball in front of the fork.
Chances are the nails that will be securely seated in the wood so a bit of force will be needed with a twisting motion of the roofing shovel or spade.
Removing asphalt shingles is a big job and you might be temped simply to lay the new roof over the old one.
In this video this old house general contractor tom silva explains how to reshingle a roof steps.
Remove the shingles in layers as you work your way up the roof.
Cover roof deck with 30 pound felt underlayment.
Building codes say you can put a second layer of shingles over the first layer but it s better to strip off the old shingles and start with a clean slate.
You will want to start from one side of your roof and work your way to the other side.
Push the shingles down to the roof jacks.
Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface.
Staple felt every 6 to 8 inches.
Ensure that as you.
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Remove shingles in a 2 to 3 ft wide section as you work down the roof.