Quick Answer: Should I Remove Old Shingles When Installing Metal Roof?

Can metal roof be installed directly over shingles?

In almost every case, the answer is yes, you can lay down a new metal roof over an existing shingle roof. This is one of the many reasons metal roofs keep growing in popularity – their installation doesn’t require completely tearing off the existing roof, which is a time-consuming and expensive job.

Do old shingles need to be removed?

If any areas of the roof have become severely damaged, it’s usually better to remove the old shingles and start from scratch. 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.

Do roofers remove old shingles?

Difference between reroofing and roof replacement 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 the old roof will not be removed/teared off.

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What are the disadvantages of a metal roof?

Disadvantages of metal roofs

  • Affordability. Metal roofs can be as much as two or three times more expensive than other roofing materials.
  • Noisiness.
  • Expansion, contraction and fasteners.
  • Inconsistency of color match.
  • Performance.

How much does it cost to put a metal roof on a 2000 sq ft house?

For an example of a typical project, you can expect to pay between $19,000 and $33,000 for a new 2,000 sq. ft. or 20-squares metal roof fully installed on a typical house.

Can you put metal roof over shingles without furring strips?

You should not attach metal to asphalt shingles without furring out the roof first. Install radiant barrier, install 1″X4″ battens, install metal.

Should a metal roof be installed over battens?

By design, some metal roofs MUST be installed over battens, some MUST NEVER be installed over battens, and some can be installed over battens OR solid decking. So, whichever way you go, it’s important to choose the right product and install it per manufacturer specifications.

Do I need furring strips under metal roof?

When installing a metal roof over an existing roof, insulate the spaces between the wood strips with rigid insulation to prevent condensation before installing the roofing. You also need to add furring strips. Twenty-four inches is a common spacing of furring strips for a metal roof.

Is it OK to put new shingles over old?

You might be able to lay new shingles over existing shingles and avoid the cost of tear-off. Asphalt shingles can be laid over cedar shakes or shingles, however, this is a roofing project best left to pros.

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How hard is it to remove shingles?

Although removing asphalt shingles requires less roofing knowledge and training than the installation of the new layer, it is still a lot of work. Maybe you’re not afraid of hard work, but also remember you’ll be working on a sloped surface, using tools you likely have never used before.

Do you pull the plastic off shingles?

The shingle release film — you DO NOT need to remove it! The plastic does NOT have to be removed – which saves a lot of trouble and plastic flying around the yard.

Why are multiple layers of shingles bad?

Two layers of shingles trap more heat, which in turn damages the shingles and shortens the life span of the roof. Adding a second layer could compromise the structure of your roof. Problems fixing leaks: A second layer of shingles only complicates the job when a roofer is trying to fix a leak.

How long does a reroof last?

The 26 gauge and 29 gauge cheaper metal roofing options can last for up to 25 years if taken care of. On the high-end, the 24 gauge metal roofing option can last for up to 50 years. However, most manufacturers offer a 20-year warranty and some even a lifetime warranty which is dependent on the metal used.

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