If the job is done correctly with the new layer of shingles laid flat over the existing shingles the old roof cushions the new one and serves as a secondary barrier should wind or water ever break through the new shingles.
Roll roofing over existing shingles.
It has a life expectancy of anywhere from six to 10 years but it s fairly inexpensive.
It is easier and quicker to manufacture than shingles since it is a single piece and as a result it is a good deal cheaper.
Roll roofing is a good choice for covering an existing roof.
All shingle manufacturers honor the warranty whether their products are used for a reroof or a new roof.
In this video i take show how to proper recover an old roof and make it look like it s a single layer check it out you might find useful tips for your new.
Rolled roofing has become more and more popular in recent years.
Rolled roofing is very adaptable and can be cut into 12 inch by 36 inch strips to act as hips and ridges or 9 inch strips for eaves and rakes.
Roll roofing generally is sold in a sheet 36 inches long and 60.
When compared to shingles rolled roofing is far cheaper and much easier to apply.
Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros.
If you get the right materials and stick.
Roll roofing is a lightweight roofing material that s sold in a large roll.
Before you reshingle a roof read our step by step guide for adding new shingles over old ones.
You don t need to get a professional in to apply rolled roofing to your house or shed you can do it yourself.
Besides creating extra weight for your house to support installing rolled roofing over an existing roof reduces the lifetime of the new roof and existing leaks may reappear.
Although many metal roof systems can be applied over an existing roof layovers are more commonly done with asphalt shingles.
3 install 1 4 purlins down over the shingles before installing the metal roof the third way to install a metal roof over shingles is by applying 1 4 purlins over the shingle roof.
A champaign roofing company can install it for a reasonable price if the homeowner does not wish to do it.
Doesn t provide the flattest surface for the metal roofing to be installed over each course of shingles is about a 1 8 higher than the course just below it.
1 install a drip.
If removing your current shingles is a problem it is usually permissible to re roof over your existing roof with rolled roofing.
It can be installed simply and requires only nails and roofing cement.