Most codes now allow no more than two layers of roofing before requiring a complete tear off.
How to install tin roof on house.
One downside is that the metal sheets have a susceptibility to denting both in installation and during hailstorms.
In many cases it makes sense to remove an old or dilapidated roof and install a metal roof that is better able to withstand the elements.
Metal roofing resists rot is not susceptible to insect damage and is non combustible a boon in fire prone areas.
This is by far the most common way to install a metal roof.
How to install a metal roof on a house covering your existing asphalt shingles with metal roofing might be worth the expense.
You will most likely have to order the roofing metal in the amount and color specific to your house.
The good news is that there are many different solutions in terms of installing metal roofing panels including tin aluminum and steel.
Lay the slats at 2 foot intervals length wise as you work from the roof s bottom and upward.
The panels that make up the roof fit together like pieces of a puzzle snug and tight.
Whether you are looking to install a metal roof on a shed or a house it s important to know the difference in the various types of metal roofs available.
Secure them with clip fasteners image 2 not screws penetrating the metal panels themselves.
You will also need a large garbage can a jigsaw or power metal shear a staple gun a drill and assorted drill bits 1 inch roofing nails metal roofing screws and self drilling self sealing wood screws.
Install slat boards to the roof so that you can easily attach the new tin.
Here are some pros and cons.
3 install 1 4 purlins down over the shingles before installing the metal roof the third way to install a metal roof over shingles is by applying 1 4 purlins over the shingle roof.
As long as the plywood under the shingle roof is in good condition this way can provide many benefits.
A corrugated metal roof is quieter than pvc when it rains.
Step 5 install slat boards and metal edging.
Finally install the metal panels image 1 placing metal closures on the top and sides of the roof structure to hold the panels in place.
Let s take a look at the most common types of metal roofs for houses.
These systems aren t attached to a frame but instead install directly on the old roof.
Can you avoid tearing off your old asphalt shingle roof by putting a steel roof over it.
Secure the slats with 3 inch metal to wood screws.
Then nail the metal edging by using a hammer and roofing nails.