Residential building materials

Solutions for your residential construction projects

Building materials for your residential needs

Fiber-Cement Siding

Specially designed to replicate the look of classic siding.
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House Fans and Ventilation

Products that help ventilate homes and attics
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Related Blog Post Row - Residential building materials

Blue-green algae on the roof of a stone house
Residential Roofing

Addressing Roof Stain: How to Sell Algae-Fighting Technology to Homeowners

Many homeowners don't know that the unsightly black or brown stains they see on their roofs may be due to blue-green algae. They tend to think that the roof stain is simply dirt or how shingles age and that there's little that can be done to prevent it. But when made aware of the problem, our survey* found that many homeowners would invest in products that help protect against it, which will help you expand your offerings.

By Authors Stefanie Zinchiak

June 05, 2025

Stay on top of industry trends and innovations with GAF’s RoofViews blog.

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