Can you put roll roofing over existing roll roofing?

You can install roll roofing directly over a single layer of existing roof covering, but if there are already two coverings, you must remove both.

Can you put rolled roofing on top of rolled roofing?

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. If removing your current shingles is a problem, it is usually permissible to re-roof over your existing roof with rolled roofing.

Can you put rubber roofing over rolled roofing?

Rubber roofing cannot be applied directly over shingles. If you don’t want to do a complete tear off of your existing shingles, you have to consider a number of factors. First, re-roofing is allowed in most jurisdictions; however, re-roofing over more than 1 layer is often prohibited.

Can you put a roof over another roof?

Roofing over an existing roof is also called reroofing or an overlay. It is the process where roofers install a new roof over your existing one, i.e. add a new layer of shingles, which means that there is no tearing off of the old roof.

INTERESTING:  What does replacing a roof involve?

How much do you overlap rolled roofing?

The piece should overlap the lower course by at least 4 inches. Cut a hole in the roll roofing and slip it over as well.

Can you overlay a felt roof?

About Roof Overlay Systems

Not all roofs are suitable for an overlay system and only some roofing materials are able to be used as an overlay. … This can be applied directly over existing felt roof making it a convenient and cost effective way to enhance a felt roof without the need for more major building works.

Are rubber roofs any good?

Rubber roofing is suitable for extreme conditions, giving you one of the most durable and reliable roofs available that typically lasts between 30-50 years. In time, you may find a felt flat roof can pick up moss and algae; the synthetic rubber doesn’t support the growth of moss so you are guaranteed a clear roof!

Do you nail roll roofing?

Do you nail down roll roofing? Nails are typically used to secure this type of roof. You can nail the separate layers by hammering the nails in 10-inch intervals across the roof. After that, you’ll want to use cement to cover them and seal them in place.

How long does rolled roofing last?

The average lifespan of asphalt roll roofing is 5 to 10 years. With proper maintenance, you can expect to get the maximum life from your asphalt roll roof.

Is it better to remove old shingles?

While a repair job can often be more convenient and somewhat more cost-efficient, placing new shingles over old ones is never a good idea. Whether repairing one section of roof, or a replacing a whole one, it’s always best to pull up the old shingles before putting down the new ones.

INTERESTING:  Should I shovel my roof off?

Is shingling over existing shingles?

You might be able to lay new shingles over existing shingles and avoid the cost of tear-off. If conditions are right, new shingles laid over old shingles can be just as attractive and durable as shingles laid on bare sheathing. … But you must take care to install shingles correctly so they lie flat.

How much does it cost to overlay a roof?

THE COST OF A ROOF DEPENDS ON MANY FACTORS

On average, reroofing a house could cost between $5,000-$12,000, but prices are dependent on many different factors.