Jay Helsel

Coating Failure

Clues to a Coating Failure

A consultant follows the facts to discover why perfectly good, recently applied paint fell from a new steel ceiling and to find the source of the coating failure. It wasn’t like the sky was falling, but when large pieces of paint dropped from the roof deck onto machinery being installed in a newly built manufacturing …

Clues to a Coating Failure Read More »

Concrete Sealer

Concrete Sealers

The strength and durability of concrete makes it an important structural material. However, concrete’s porous nature allows it to absorb water and soluble salts, which can be destructive. Further, when steel reinforcement is embedded in concrete to increase its strength, concrete’s absorption of salts, particularly chlorides, will eventually cause corrosion issues. Therefore, protection of concrete …

Concrete Sealers Read More »

Metal Roof Repair

Failure Analysis: When Metal Roof Coatings Fail

A variety of coating system choices can be applied to metal roofing, including acrylic, epoxy/polyurethane, and fluoropolymer systems. Specifications frequently call for fluoropolymer coatings, which are considered to offer the best performance in long-term weathering resistance. Roof panels are fabricated from sheet-metal substrates such as steel, galvanized steel, aluminum, and other metals. Galvanized steel (a …

Failure Analysis: When Metal Roof Coatings Fail Read More »

The Case of October Showers Bring November Rust Spots

In this month’s Cases from the F-Files, rust spots became evident on the interior roof deck of a newly constructed, unoccupied warehouse. Were the rust spots a result of what was going on inside or outside of the warehouse? Background of the Project As a large warehouse building in the north-east U.S. that was being constructed …

The Case of October Showers Bring November Rust Spots Read More »