The purlins not only give you something other than the existing roof to accept the roof panel fasteners they also create an airspace between the roof panels and the existing roof.
How to walk on fiberglass roof panel.
Similar to wood of equal thickness fiberglass panels can be flash ignited at approximately 700 degrees f.
Remove any loose pieces of fiberglass clinging to the hole.
If you ve got a pergola attached to your house then you might want to give yourself some extra shelter and protection from the weather simply by installing.
To keep your roof in top shape consider these insights on fiberglass roof maintenance and enjoy an rv that is both dazzling and leak free.
If you are placing metal panels over an existing roof you still use purlins.
Observe simple fire precautions.
Fiberglass is also a common material used in the construction of rv roofs for numerous reasons.
Spread a drop cloth to protect the area beneath the repair.
Position a ladder so that the hole in the roof is within easy reach.
Installing fiberglass roofing panels is not that much different than installing metal roof sheets however there are differences that are there.
The purlins support the panels.