3 Common Types of Roof Contaminants in Mercer Island

Roof-Contaminants-Mercer-Island Your roof is exposed to all kinds of weather and other elements all year long. Because of this, different contaminants can grow there, all of which can cause long-term damage that can be expensive to fix. Knowing some of the most common types of roof contaminants and what they look like will help you decide when to get your roof cleaned. 

Moss & Algae

Moss and algae can cause serious damage to your roof by lifting up shingles or roofing tiles and letting in moisture. Moss is usually soft and green and grows in intermittent tufts around the roof. Moss and algae thrive in damp and shaded areas of the roof, especially in regions with high humidity levels.


Lichen is a symbiotic organism consisting of algae and fungi. Like moss and algae, lichen can grow on roofs, particularly in areas with consistent moisture and shade. Lichen can be more damaging than moss or algae because its roots penetrate and hold onto the roofing materials, causing physical damage.

Mold & Mildew

Mold and mildew are fungal growths that can develop on roofs in moist environments. They are not only unsightly but can also lead to health issues and cause damage to roofing materials.

Need to Remove Roof Contaminants in Mercer Island?

If you want to save money on repairs and keep your home in great shape, J&J Roof Cleaning Services is here for you. In addition to pressure washing, we offer a wide range of additional home services. We’re your one-stop shop for keeping your roof in great shape through moss removal and other methods. We also offer maintenance plans to ensure your gutters stay clean. Contact us today for all your roof maintenance needs! 

Expert Help With Roof Contaminants in Mercer Island

Serving Everett, Bothell, Bellevue, Marysville, Lake Stevens, Mukilteo, Snohomish, Mill Creek, Edmonds, Mountlake Terrace, Shoreline, Lake Forest Park, Kenmore, Woodinville, Kirkland, Redmond & Mercer Island

Posted on February 7, 2024 | Published by Ignite Local | Related Local Business