It creates an air gap between the back of the metal and the shingle roof which allows for airflow.
Putting tin on roof.
For an r panel style you will need to install it with 5 16 inch lap screws.
To keep it strong for many years to come make sure that you have the right support systems for your roof.
Use 1 1 4 inch nails to cover the outline of the roof with strips of metal eave flashing also called edging.
If a proper roof inspection isn t done the 1x4 s could be installed over rotten plywood which means the screws could pull out.
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.
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.
Advantages of metal roofs in general.
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.
For instance you ll.
Before you install metal roofing repair any damage to the wood under the shingles.
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.
If you re considering buying a metal roof or you already have one installed you know that this is a strong roofing material.
Metal roofs have increasingly become a more popular option for homeowners due to their reputation for longevity and curb appeal.
Next use 1 inch nails to secure some metal edging to the perimeter of the roof.
The second way to install a metal roof over a shingle roof is with the use of purlins or battens.
Lay the first piece of tin roofing in a bottom corner of the roof.
Step 2 take measurements.
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.
Secure them with clip fasteners image 2 not screws penetrating the metal panels themselves.
It provides a solid flat surface to attach the new metal roof to.
A metal roof can be durable but it needs gutters to help prevent damage from rainwater.
However with a seamed or crimped roof style you won t need screws.
Then cover the entire roof with a layer of insulation and secure it with a staple gun.
This method has its benefits as well.
Slide a washer onto a 1 1 2 inch wood screw and drive it through a low.