Metal Roof Installation (Direct to Deck)
Metal roof components are manufactured from steel, galvanized steel (zinc-coated steel), copper, lead, aluminum,
and terne (a tin-lead alloy-coated steel). Tin-plated stainless steel is available for locations where regular steel
wouldn't last well, such as salt-air coastal regions. They're also free of the ice-damming problems associated with
shingles and tiles.
Modern metal tile roofs can be installed over regular sheet ply or OSB sheathing, with an underlayment of roofing
felt. Today's tiles are fully interlocking to provide better weather protection and resist being torn up by high winds.
Metal roof shingles shall not be installed on roof slopes below 3 units vertical in 12 units horizontal
(a 25-percent slope).
License
All images copyright © 2008-2026 the International Association of Certified Home Inspectors, Inc. (InterNACHI). All rights reserved. InterNACHI grants its members a non-exclusive, non-transferable worldwide license, as long as they remain a member of InterNACHI. Non-members must obtain written or email permission from InterNACHI before using these images for any purpose. If you are an InterNACHI member or have received written or email permission to use this image, you may download it in high resolution.
If you are aware of any person or entity using any InterNACHI image or intellectual property without authorization, please contact InterNACHI.
