Roofing over an existing roof is also called reroofing or an overlay.
How to shingle over existing roof to patch a leaky.
Continue marking lines every five inches up to the roof ridge.
Homeadvisor s leaking roof repair guide provides steps to find and seal or patch holes in your shingles.
Begin by removing the shingles down to the wood sheathing and slip a strip of adhesive ice and water barrier available where roofing repair products are sold under the soffit main roof joint.
It is the process where roofers install a new roof over your existing one i e.
Use a starter strip or cut pieces for a starter course.
Attach with nails along the top edge of the strip.
The uncut shingle should hang a quarter of an inch over the roof edge.
Many arizona homeowners with shingle roofs do decide to roof over their existing shingles because.
It s clearly easier and cheaper to leave the old shingles in place but there s some special prep work involved with a re roof removing vents ridge caps and misshapen shingles among other things and you still have to replace or add new flashing which sometimes can be tricky over old roofing.
Add a bead of caulk or roof cement to the top and bottom edge of the flashing to keep it in place.
Mark the location of the top of the uncut shingle on the felt.
You can save.
Why installing new shingles over old shingles can be good.
Depending on how the roofs join you may have to cut a slot to work it in far enough.
Patch the nail or screw holes by slipping a piece of roof flashing underneath the shingle.
When roofing over your existing shingles can be a good idea.
Add a bead of caulk or roof cement to the top and bottom edge of the flashing to keep it in place.
Difference between reroofing and roof replacement.
Assessing a roof leak.
To remove a damaged shingle lift the.
Fix your roof from the ceiling or attic inside or outside of your house.
Use a temporary patch for emergencies or permanently repair you roof to stop water damage from rain and the elements.
Add a new layer of shingles which means that there is no tearing off of the old roof.
Rip cut the starter strip or starter pieces so that they butt up against the second course of existing shingles and are even with the front edge of the existing roofing.
When you should tear off your roof and start from scratch instead.
Use the chalk line to mark the line at that spot across the roof.