Can You Put Metal Roofing Directly On Plywood?

Can I put metal roofing directly over shingles?

Metal Roofing Can Be Installed Over Existing Roofs Metal roofs can be installed over your existing roof without tearing off shingles, provided local building codes allow it.

While shingle removal is the preferred route, tear-off is messy and raises the cost of the job..

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.

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).

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.

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.

What is the best underlayment for 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 put metal roofing over wet tar paper?

Other common shortcuts your roofer should avoid: Do not shingle over wet or damp roof sheathing or damp felt paper. … Use metal flashings where the shingles butt up to a wall, chimney or skylight. Do not use caulking, roof tar or asphalt mixes to cover flashing materials.

How much does it cost to do your own metal roof?

A DIY metal roof will cost $2,000 to $5,000 versus the average $5,000 to $12,000 to have one installed professionally. Some are easier to install than others, but most are more difficult to work with than materials like asphalt shingles.

How much does a new metal roof cost for a 1500 square foot house?

It will cost around $9 to $12 per sq. foot installed for a standing seam metal roof. For example, if you have 1,500 square feet, the average cost of installation is $8 per square foot – it will cost you $12,000 to install the metal roof. There are low-end shingles that can be installed on top of the old roof.

Does metal roof need plywood?

While metal roofing doesn’t require plywood underlayment, there are circumstances in which you may wish to install plywood to anticipate future roofing needs or to offer additional soundproofing. Modern metal roofs are expected to last 30 years or longer.

Is underlayment necessary for metal roof?

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.

Can you install metal roofing yourself?

Metal roofing will not only conserve energy, but many metal types can withstand the elements for many years. While the installation process can be completed as an advanced DIY project, it is complicated and can vary slightly based on the brand of panels or shingles that you select.