The second way to install a metal roof over a shingle roof is with the use of purlins or battens.
Putting tin on roof.
Lay the first piece of tin roofing in a bottom corner of the roof.
Before you install metal roofing repair any damage to the wood under the shingles.
Use 1 1 4 inch nails to cover the outline of the roof with strips of metal eave flashing also called edging.
Advantages of metal roofs in general.
Place corner pieces where panels will meet bends at the edge of the roofing.
The purlins are screwed or nailed down to the roof deck depending on how the metal roofing manufacturer has testing for their roofing panels and then the metal is installed to the purlins.
Step 1 select a tin roof type decide what type of tin roof you want by selecting either an r panel or v crimp style.
Then cover the entire roof with a layer of insulation and secure it with a staple gun.
Step 2 take measurements.
This method has its benefits as well.
For instance you ll.
The panels that make up the roof fit together like pieces of a puzzle snug and tight.
It provides a solid flat surface to attach the new metal roof to.
If there are gutters installed on the eaves the eave flashing should be installed to overhang the lip of the gutter by about 1 2 inch.
There s already plenty of advantages by choosing a metal roof and there s even more when you decide to put a metal roof over shingles.
It creates an air gap between the back of the metal and the shingle roof which allows for airflow.
Position it so it overhangs the edge at least 4 inches.
If a proper roof inspection isn t done the 1x4 s could be installed over rotten plywood which means the screws could pull out.
If you re considering buying a metal roof or you already have one installed you know that this is a strong roofing material.
Slide a washer onto a 1 1 2 inch wood screw and drive it through a low.
Secure them with clip fasteners image 2 not screws penetrating the metal panels themselves.
To keep it strong for many years to come make sure that you have the right support systems for your roof.
A metal roof can be durable but it needs gutters to help prevent damage from rainwater.
Next use 1 inch nails to secure some metal edging to the perimeter of the roof.
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.