In spray polyurethane foam roofing, a small cut about 1 inch by 1/2 inch by 1/2 inch in a half-moon shape used to measure coating film thickness.
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In spray polyurethane foam roofing, a small cut about 1 inch by 1/2 inch by 1/2 inch in a half-moon shape used to measure coating film thickness.
« Back to Glossary