One option for installing a metal roof over shingles without furring strips is to use a cross-batten style. A cross-batten technique involves laying down vertical battens first. Next, the battens attach through the roof deck to your rafters. Finally, your horizontal battens are placed.

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.

Can you put metal roof directly on 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.

Are furring strips necessary?

Furring strips offer a secure base for new drywall panels. If you’re hanging drywall on new ceiling joists, you probably won’t need furring strips. If the ceiling is old, however, and you don’t want to remove the existing ceiling finish, furring strips can provide a solid base.

Do you need sheathing under 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.

Do you need a vapor barrier under a metal roof?

To avoid condensation buildup with your metal roof, you will need to have a moisture barrier in place. It depends on air temperature, water vapor near the metal panels, the prevalence of warm air in and around your roof assembly, and other conditions.

Can you put shingles over 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.

What is the best underlayment for 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.

Can you install metal roofing directly to plywood?

Metal roofing should not be installed directly over the top of bare plywood. You do not have to install roofing shingles or other roofing material, but a felt sheet over the plywood is the bare minimum. When the metal expands or contracts with changing temperatures, it can tear or wear away the felt sheeting.

Do you need roof vents for metal roof?

A metal roof typically does not increase nor decrease the need for ventilation. Ventilation that meets code requirements is adequate for any type of roofing material, including metal.

Should I Nail or screw furring strips?

For furring strip installation, affix the strips across the joists every 24” on center with screws or nails at least 1” long so that they will go into the joist with a minimum depth of 1/4″. Use shims, if necessary, to achieve a uniform flat and level ceiling or wall.

Where can I find furring strips?

A magnet type stud finder will detect the drywall screws embedded in the furring strips and will indicate the location of the furring strips. Another option is to just use course threaded plastic or metal phillips head E-Z anchors and to not necessarily try to find the furring strips at all.

What is the difference between furring strip and common board?

Common boards

These boards are a great option for beginning woodworkers because they are still quite inexpensive, but straighter and prettier than furring strips. Common boards are typically made from pine and are considered a soft wood. I use these boards for a lot of woodworking projects and with great results.

Do you need to put tar paper under a metal roof?

Metal roof underlayment is an important component of a metal roofing system. Some might choose to skip using underlayment to save money. However, the metal roof underlayment acts as an added layer of protection. The short answer is yes, your metal roof does need underlayment .

Can you walk on a metal building roof?

Most metal roofs are manufactured and installed in such a way as to be safe to walk across without the worry of damaging the roof. You might mark or scuff the finish or paint on your metal roof, but average foot traffic shouldn’t significantly impact the longevity or performance of your metal roof.

Can metal roofing be screwed to 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.