If you choose to install metal roofing over shingles there are certain things you must keep in mind.
Installing corrugated roofing over shingles.
Install a layer of roofing felt over the roof before you begin.
We re going to break them down so you know what to look out for.
Before you begin installing the new shingles be sure to inspect the roof for any damage.
Has the same manufacturer s warranty.
Hammer down any large nails that are exposed by the removal.
Steel roofing offers many benefits over slate tiles or asphalt shingles metal roofing is resistant to fire rot and termites manufacturers provide 30 year warranties on metal roofing products.
Installing a new roof over shingles takes less time than tearing off the old roof.
Damaged decking will need to be repaired before you can install any new shingles.
Install a layer of roofing insulation as recommended by the roofing manufacturer.
In terms of performance many homeowners choose a steel roof making it the most popular option when it comes to creating a metal roof over existing shingles.
Looks just as good and lasts as long.
But first here are a few precautions about the underlying material.
Installing steel roofing over existing roofing materials is fairly simple.
As long as it s done right and under the right conditions installing new shingles over old ones can last as long and look just as good as a complete re roof.
The metal used for the roof can be tin copper aluminum or steel.
Next pre drill holes on the end and side ridges of the panels spacing the holes 6 to 8 inches apart.
Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface.
Beginning at the outside edge of your roof place each panel directly onto the purlins that are attached to the roof trusses.
Installing metal roofing over shingles is the best solution.
To install corrugated roofing start by cutting your panels to length with an angle grinder.
Step 3 cover the old shingles.
Or installing the new metal roofing over furring strips 1 x 3s or similar will raise the metal and provide a ventilating air pocket between layers.
Address any existing roof leaks and replace rotten rafters or.
Inspect the underlying roof sheathing for damage and make any needed repairs.
Start from the top of the roof and remove the old shingles along with the flashing underlayment and vents.
Installation of metal roofing over shingles.
But roofers can install a vented metal roof that eliminates this potential problem.
If trapped between the metal roofing and old roofing moisture can build up and cause mold and rot.
Manufacturers will still.