Improper metal roofing screw installation.
How long do screws on metal roofs last.
They typically last about 20 years but roof panel and fastener movement can damage it.
You also learned 3 key factors that play into the life of your metal roof.
Properly installed metal roofs can last 30 40 even 50 years.
However all it takes is one poorly driven screw to make a mess of your attic and your home.
They typically last about 20 years but roof panel and fastener movement can damage it.
If you have a standing seam metal roof you could get up to 50 years.
Metal roof screw placement must include good sealants.
Sealants may fail around the screws.
This is where the standing seam vs screw down panel argument comes into play.
On the other hand a screw down metal roof could get up to 30 years with regular maintenance.
It depends on the quality of installation but on average exposed fastener metal roofs which do indeed use edpm washers if not of very low quality and life expectancy are a 15 25 year roof while a quality standing seam job is a 50 year roof.
Check your attic at least twice a year if not more often for leaks.
Sealants may fail around the screws.
A properly driven screw is perfectly perpendicular to the panel is driven straight and with good penetration.
Metal roof screw placement must include good sealants.
The edpm washer is not a band aid it s a part of this roofing system design and most of the fasteners are located on top of ribs so they see very little water also part of the design.