Frequent question: Can you install a metal roof over two layers of shingles?

In simplest terms: Yes, you can install a metal roof over shingles. … Building officials in some areas will only allow a re-roof over one layer of shingles, while officials in other places may allow you to place the roof over two layers of shingles.

Is it OK to put a metal roof over existing 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.

Can a metal roof be installed over 2 layers of shingles?

Many metal roofing systems can be installed over 1-2 layers of existing asphalt shingles, saving time, labor, and landfill costs.

How much does it cost to put a metal roof over shingles?

Cost to Install Metal Roof over Shingles

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It costs $400 to $700 per square to install a low- to mid-range metal roof over asphalt or wood shingles.

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?

Residential Metal Roof Cost Estimator

Square Footage of Home Roof Cost*
1,600 $7,000 – $24,000
1,700 $7,500 – $25,000
2,000 $8,500 – $29,500
3,000 $13,000 – $45,000

Should you remove old shingles before installing a metal roof?

Considerations for Both Options. Your local roofing contractor may recommend tearing off your old shingles before installing a metal roof if any of the following conditions apply: Rough or uneven asphalt shingle roof will affect the metal roof’s appearance. The deck sheathing show signs of rot and would require repairs …

Does a metal roof need furring strips?

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.

What kind of underlayment goes under a metal roof?

Felt Underlayment (Asphalt Felt/Tar Paper Underlayment)

Known by many different names (including felt paper, roofing tar paper, and asphalt-soaked felt), felt underlayment is the most commonly used type of underlayment material on steep-slope metal roofs.

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Does a metal roof need to be vented?

Proper ventilation is needed to ensure the energy efficiency a metal roof provides. An effectively ventilated metal roof helps to prevent energy waste and excess cooling cost that can occur when attic heat builds up with.

What do you put under a metal roof?

The traditional and most common material used for roof underlayment on a steep-slope metal roof is non-perforated, asphalt-impregnated felt underlayment. There are several types of felt underlayment including both organic reinforced and inorganic reinforced.

Can you walk on a metal roof?

You cannot walk on a metal roof.

You can, but you have to know how to do it without causing damage. Check with the manufacturer of the product you choose.

Is it cheaper to put a metal roof or shingles?

Shingle roofs are cheaper up front.

Metal roofs generally can run from $120 to $900 per 100 square feet (one 10-foot by 10-foot area, or a “square” of material), while asphalt shingles will be between $100 and $200 per 100 square feet. Its installation will also run you more for metal since it’s a more specialized job.

Is a metal roof worth it?

If you plan on living in your house for more than 15 years, a metal roof will be a less expensive long term investment. If you’re not planning on living in your house for 15 years or more, asphalt shingles will probably be your best bet.

What is the cheapest roof to install?

Asphalt Shingles – The answer to what is the cheapest roof to install is asphalt shingles. This is the most commonly used and least expensive of roofing shingles.

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Roofs and roofing