Momilani Garden Project

Precise Cleaning: Acrylic Roof Cleaning with Bonsai-Safe Care

Organic growth infestation on exterior surfaces is a commonly overlooked maintenance issue in Hawaiʻi that can lead to serious long-term damage. Beyond the unsightly appearance of mold and mildew, organic growth can deteriorate shingles, membranes, and roof coatings, shortening the working life of roofing systems and increasing interior heat retention due to the darkened, non-reflective surface. Removing the buildup not only restores appearance but also helps cool the home and prevents costly repairs. We recently serviced a Pearl City property with an acrylic coated roof badly needing professional cleaning. Made more challenging is the highly sensitive bonsai garden located directly adjacent to the roof, where protection of the priceless plants was just as important as cleaning the roof. Although our algaecide is biodegradable and generally safe around landscaping, we decided on a zero risk approach due to the close proximity of the bonsai garden.

Due to the high sentimental (and monetary value) of the bonsai trees, extra steps were taken for their care. The priceless trees were carefully protected through pre-rinsing, continuous monitoring, and controlled rinsing to ensure no overspray or runoff reached the plants. The acrylic roof was cleaned using a soft-wash method, gently applying an algaecide and all owing it to lift organic growth without high pressure, preventing micro-scratching or surface hazing. The result was a restored, crystal-clear roof, a noticeably cooler interior, and a thriving, untouched bonsai garden. After seeing the results, the client expressed interest in repairing and recoating the roof for added longevity, and we connected him with one of our trusted painting partners for the next phase of care.

Total areas cleaned: Softwash to siding and roof of home.

Geographical considerations: Frequent shade, regular moisture.

Finshed Work: See below.

Completed Work on Momilani Roof: