What Are Those Black Stains on the Roof? Those unsightly black stains on your roof are caused by algae. Algae appear as dark stains on shingles, typically covering more area on the lower sections of the roof and tapering as they reach the ridge. How Does a Roof Get Algae? Algae spread via airborne spores…
Severe Thunderstorms and Strong Winds Severe thunderstorms produced severe wind gusts, some significant. There were pockets of extensive wind damage, and two EF-0 tornadoes occurred in DeKalb and Kane counties. Hail larger than quarter size (1″ in diameter) was observed in portions of Winnebago County. If you live in an area between Chicago, IL and…
What Are Improperly Driven Nails? Improperly driven nails can significantly affect the performance and longevity of asphalt shingles. These nails fall into three categories: Issues Caused by Improperly Driven Nails Over-driven Nails Under-driven Nails Angled Nails Remedies for Improperly Driven Nails At the Time of Installation: After Installation: Check Shingle Application Instructions Conclusion Proper nail…
In the construction and restoration industries, the adhesion of finishes to wood-based siding is a pivotal factor in both aesthetics and durability. The APA Test Method F-2 is a rigorous procedure developed to evaluate the initial adhesion of standard control finishes to wood-based siding products. Here, we summarize the key aspects of this test method:…
Scope and Purpose 1. Financial Responsibility and Definition The PCA Standard P1 serves a dual role: Significance and Use 2. Types of Damages and Responsibilities 3. Criteria for a ‘Properly Painted Surface’ According to this standard, a “properly painted surface” is uniform in appearance, color, texture, hiding, and sheen. It should be free of defects…
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