A mobile home roof over creates a unique opportunity to completely change the look of the home.
How to build a new roof over the existing roof.
There are a few situations where roofing over an existing roof just isn t possible.
The new roof will be a metal roof.
A new coat of shingles over decaying shingles will cause your roof deck to decay.
We are doing all the work ourselves so tearing off the old roof would be a real problem.
In this case you can build a new roof over the old with a caveat.
Less labor is needed and there are much smaller refuse fees.
This provides added protection against ice dams.
Yippee the next.
Roofing over your existing roof is not always possible.
We do not want to remove the existing roof so we are proposing to build directly over the old roof.
The solution is changing the roof pitch or building a new roof at a higher pitch than the old roof.
To fix it you ll need to remove the existing roof.
Sounds simple enough right.
Some roofers install a layer of waterproof shingle underlayment wsu over the existing shingles at the eave end as would be done for a roof laid on bare sheathing.
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.
You must not build the new roof directly over the old.
Your roof is soft and spongy feeling if when walking on your roof the majority of it feels soft and spongy you may have some problems with the underlying sheathing of the roof.
A mobile home roof over involves placing a new roof or roofing material over your existing roof there s little to no material removed which can keep costs down.
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Unfortunately it s not an option for everyone.
However installing new flashings including special drip edge flashings made for reroofing will ensure a tight seal and a long life.