Guilderland is a town of big wooded lots — Westmere, McKownville, and the stretch out past Guilderland Center all sit under heavy tree canopy that blocks sun and traps moisture against siding for days after a storm. Add the cooling breeze that spills down off the Helderberg escarpment and the humid air pooling near the Normanskill and Watervliet Reservoir, and you get siding that never fully dries out.
That combination shows up as green-black streaking on the shaded sides of 1970s-90s colonials and raised ranches, especially where mature oaks and pines crowd right up to the foundation. High-pressure blasting knocks the color off for a week or two, but the algae's root structure survives in the siding's texture and comes right back.
Our soft-wash process uses low-pressure application of professional-grade biocides that kill mildew and algae at the root, then a gentle rinse that won't strip paint or drive water behind old aluminum siding. We've been washing homes throughout Guilderland and the Route 20 corridor for over 10 years, and we know exactly which walls in which neighborhoods need extra dwell time.