What is Growing on my House? Understanding common substance growth on exterior surfaces

exterior window cleaning service

If you’ve ever noticed unsightly green or black streaks or spots on the exterior of your home, you’re not alone. Many homeowners struggle with substances that grow on their properties, including algae, mold and mildew. But what exactly are these substances and why do they grow on our homes? Let’s take a closer look.


Algae is a type of plant that can grow on the exterior of your home, especially on surfaces that are constantly exposed to moisture, such as shaded areas or areas with high humidity. Algae can appear as green or black streaks or spots and can make your home look dirty and unkempt.

Mildew and fungus

Mildew and fungus are notorious for colonizing roofs, siding and decks, particularly in humid climates. Areas shaded from sunlight, like north-facing sides of your home, are prone to mildew and fungus growth. These growths can cause discoloration and contribute to an overall dinghy appearance.

Lichen and Moss

Roofs, particularly those with wooden or asphalt shingles, can fall victim to lichen and moss. While they might give off a rustic vibe, these growths can trap moisture and compromise the integrity of your roof.

Soft Washing: A Gentle Solution to a Pervasive Problem

Soft washing presents an effective solution to the widespread issue of unwanted growth on your home’s surfaces. This cleaning technique employs low pressure water alongside cleaning solutions, safely eradicating algae, lichen and other dirt and debris. Unlikely high pressure washing that can cause harm, soft washing maintains your home’s structural integrity while achieving a thorough clean. This method addresses growth at its root, dissolving contaminants without damaging surfaces, and the specialized solution used also deter future regrowth. Beyond enhancing your home’s appearance, routine soft washing safeguards your investment by preventing potential long-term damage that could necessitate costly repairs. The immediate impact on curb appeal is striking as growth removal reveals the true beauty and colors of your surfaces, leaving a positive impression on both you and your neighbors. Soft washing’s gentle approach is not only beneficial for your home but also for your health, as it avoids harsh chemicals and excessive water pressure. This soft washing method ensures a clean home for you and your family.


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