Composition shingles are a good choice for a clean look at an affordable price. Higher-quality versions made from asphalt or fiberglass offer a more durable option and may be available with recycled content. Composition shingles come in a large selection of types, brands and colors. Versatile, they adapt easily to different applications. They are relatively easy to install, require low maintenance and can usually be walked on without damaging the material. Most brands offer Class A fire protection.On the negative side, they can blow off in high winds, and Material is easy to scar if hot. Another key downfall of composition shingles, especially in lower mainland BC, is their susceptibility to staining. It is quite common for shingle roofs to appear old and weathered after five to ten years due to black, brown, or green stains created by algae, mold, and lichen. Although there are preventative measures available, such as chemical treatments and preservatives built into the shingles, there will eventually be staining on all shingle products. Robinson Roofing offers services to remove moss, algae and lichen from roofs but all processes regardless of their claims will shorten the life of the shingles somewhat. Our process is one of the least invasive of all techniques, although more labor intensive. Note: By no means, and under no circumstances should a shingle roof ever be pressure-washed.