Question: Is It OK To Put A Metal Roof Over Shingles?

Can you put a metal roof over 3 layers of shingles?

Or can you install a metal roof over shingles.

Technically, the answer is yes — you can install a metal roof on top of shingles as long as there are fewer than four layers of shingles on the roof.

However, that process can lead to a variety of complications and therefore is not recommended..

How do you stop condensation on a metal roof?

Traditionally, condensation is managed by insulating the metal roof so that the panel temperature never reaches the dew point. This is often accomplished using vinyl-backed fiberglass insulation to prevent humid air from coming into contact with the cooler metal roof (which may be at or below the dew point).

Can you put metal roofing over cedar shakes?

A: If you are selecting to install a screw-on metal roof — a less expensive metal roof than standing seam, but not as good overall — you may be able to apply it over the existing cedar shakes if the planes they form are regular. … Cedar shakes vary so much in thickness that this may not be possible.

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

Metal panels typically start at $6.50 per square ft or $650 per square. That price point can double depending on the style and the finish the surface is covered in. A steel metal roof can average between $275-$400 per 100 square foot.

Should plywood go under metal roof?

As long as the interior of your roof is protected from moisture accumulation, underlayment is not required, though homeowners planning to insulate their house heavily may choose to install plywood to protect their investment. …

Can I put metal roofing over OSB?

No, you do not need to screw into solid lumber (joists, stripping,etc.). As you can see, the thinnest material they recommend is 1/2” (7/16”) OSB board at 9” on center up to 24” on center. Be sure to follow their instructions in order to obtain the warranty. Metal roofing screws need to go into framing.

Does having a metal roof lower your insurance?

That’s why having a newly installed roof can save you on insurance premiums. … Insurance companies also look favorably on metal roofing because research has shown that homes with metal roofs receive less damage from storms and house fires, which means the company is much less likely to have to pay an insurance claim.

What are the pros and cons of metal roofing?

Pros and Cons of Metal Roofing | Pacific West RoofingIt’s extremely lightweight. Metal roofing is lightweight, especially when compared to tile or other varieties. … It’s easy to install and will save energy in the long run. Metal roofing material comes in 12 to 36 inch panels or multiple-shingle sections. … It’s expensive. … It’s noisy. … Accessibility. … It dents easily.

Can you use house wrap under a metal roof?

Yes, the housewrap has a high perm rating, but it is the Lowes-brand stuff with tiny holes (not TYVEK), and obviousy meant for vertical installation, not to be trapped between metal and tarpaper. I don’t want water to be trapped against the metal sheeting unable to evaporate for long periods.

What are the disadvantages of a metal roof?

Disadvantages of metal roofsAffordability. Metal roofs can be as much as two or three times more expensive than other roofing materials. … Noisiness. Metal roofs can be noisy, especially during a heavy rain or hailstorm. … Expansion and contraction. … Inconsistency of color match. … Performance.

Do I need felt 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. … Depending on the demands of the architect, local building code or the metal panel manufacturer, one or two layers of non-perforated asphalt felt are used.

Can metal roof go over two layers of shingles?

Most building codes allow you to install a metal roof over 1-2 layers of shingles, but no more. Verify codes in your area before installation.

Do I need underlayment for metal roof over shingles?

Here’s why: If your metal roof is to be installed over solid decking or over existing shingles (an environmental benefit), a layer of quality underlayment between the two is essential. … Expansion and contraction of the roof panels could then damage the underlayment.

Do you put anything under metal roofing?

The simple answer is yes, your roof does need an underlayment. … Traditionally built homes will need an underlayment. If your home is built with joists, insulation between those joists, and sheathing, then an underlayment is needed before you put on a metal roof.

What is the best color for a metal roof?

Energy Efficiency Such a roof can be reasonably expected to be some 50 to 60 degrees cooler than a dark color asphalt shingles roof. It is best to choose a light color metal such as white, light bronze, beige, peach, light green or blue, if you live in a region that has a lot of sun and a hotter climate.

Does a metal roof affect cell phone signal?

A metal roof is just one of many building materials that may weaken cell phone reception. Generally, if you do have poor cell phone service in your home, it will be due to the cumulative effect of the materials used. … So, metal roofs don’t actually interrupt cell phone reception.