Steel Roof Deck Corrosion

The deck is a structural panel that spans over roof joist or purlins to provide a flat.

Steel roof deck corrosion.

Steel roof deck shall be 22 gauge galvanized steel profile to match existing. Is a virginia based manufacturer of corrugated panels in stainless steel flooring aluminum galvanized steel galvalume and fiberglass for industrial and architectural roofing siding and decking. Steel vulcraft wheeling or. This exposed moderate to severe corrosion of the deck.

Steel roof decks that were in contact with wet phenolic insulation will have major corrosion problems. Roof deck shall have a minimum yield strength of 33 000 psi and a maximum sheet length of 42 0. Recent studies by various parties have examined premature corrosion of metal roof decks where fiberboard insulation was directly attached to the top surface of the metal deck and or where ferrous mechanical fasteners were placed through the fiberboard to anchor it to the deck 1 figures 1 and 2. Steel roof deck is the predominant structural component used in virtually all flat roofs.

1 in 1985 about three years after construction when several new penetrations were cut in the asphalt built up roof bur. The discovery of corrosion of the metal deck was initially made on the roof of project no. Corrosion resistant roof fasteners either stainless steel or coated are crucial. If such corrosion is found at the roof cuts the deck may be unsafe to even walk on and may require total deck replacement.

Roof deck roof deck is designed to carry live and dead load without acting in conjunction with other materials. The roof ceiling assembly is vital to the long term success of a project. In projects calling for a flat roof a roofing membrane with rigid insulation over polyiso board and steel deck is the most common assembly. 2 01 steel roof deck a.

This corrosion was initially thought to be dormant and isolated to active leaks. James river steel inc. Steel roof deck shall be as manufactured by u s. The series of design manuals developed since 1939 have proven successful in their approach to steel deck design and corrosion protection.

For most 1 1 2 38 mm deep roof decks the loss of one rib either by denting or penetration can be tolerated and no reinforcement will be required. Corrosion resistant architectural metals industrial corrugated stainless steel. Corrosion of the steel be controlled and not allowed to affect the integrity and strength of the product.