08-28-2013, 10:23 PM
Markintosh wrote:
The jump to steel is not such a simple decision. If you live in an area where there are large variations in temperature, there will be a lot of expansion and contraction. This causes nails or screws to loosen over time, requiring maintenance on the roof. We also had issues around flashing and vents where caulking would crack due to expansion and contraction....more maintenance.
On our first house we built, we pulled the metal and went to 40 year shingles after 5 years. We managed to sell the metal to a local contractor.
Not if the correct metal system is used. There are hidden fastener metal systems which allow the metal to slide. I would not use such a system in areas subject to high winds though.