SoftWashing is the science based application of custom blended chemicals to achieve a 100% kill ratio of the stain and damage causing organisms, resulting in long lasting protection and clean appearance.
On the other hand, power washing erodes the surfaces being cleaned, voids warranties and encourages the regrowth of the organisms that eat your surfaces and cause staining.
SoftWashing vs. Power Washing compared:
- Low pressure – pressure low enough to just apply chemicals to kill algae, moss and lichen.
- SoftWashing is safe for soft surfaces such as paints, wood and roof shingles.
- Recommended and endorsed by major asphalt shingle manufacturers and American Roofing Manufacturers Association (ARMA).
- SoftWashing results in 100% kill of the organisms that cause the unsightly stains and the results last 4-6 times longer than power washing.
- Mechanical process of using high pressure (up to 4,000 psi) water to erode off algae, moss and lichen.
- Power Washing is destructive to soft surfaces such as wood, paint or roof shingles. It is erodes the soft surfaces that are cleaned.
- Use of high pressure water voids the warranty on asphalt roof shingles.
- Pressure/Power washing only blasts off the visible surface growth of the stain causing organisms. It does not kill them. For that reason, and because the root systems remains largely intact the stains tend to regrow thicker and healthier in a zebra stripe pattern within as little as six months.
The time of year doesn’t matter as long as the temperatures are above 40 degrees farenheit. Ideally, spring is a good time before flowers and landscapes bloom.
The process is immediate on contact and will change your roof to a tannish color. You may elect to have it rinsed off or just allow mother nature to disperse it naturally. If left on it will take approximately 3-8 months to clear away from roof, leaving your roof healthy and esthetically looking like new.
Many of the organisms on a roof that cause staining on the shingles are there because of the warm, moist environment a roof creates such as algae, mildew and bacteria.
It all depends on the contributing factor that got your roof to that point. If perhaps trees are cut back to allow more sunlight or other variables. A 5 year would be the approximate early stages of the return.