Debris and moss buildup hold moisture in the slates that can split them during winter freezes.
Slate roof cleaning chemicals.
Such harsh chemicals are incompatible with the copper.
This gives your roof an ugly look and it is bad for the state of the roof as well.
While you might be tempted to reach for a strong chemical or a pressure washer it s better to leave them behind and give your slate roof a little tender loving care.
When cleaning a slate roof don t use chemicals like ammonia or chlorine bleach.
Roof cleaning by using the correct chemicals.
The goal when cleaning a slate roof is to soften and loosen the undesirable buildup.
Regular roof cleaning is critical for your roof as slate is easy to cleave and water absorbent.
It is a proven chemical that is non corrosive and biodegradable.
Buildup of moss and debris on slate roofs hold moisture in the slates that can split them during winter.
A normal 9 trowel is suitable if your roofing contractor chooses a dry day any moss will flake off the roof much easier and there won t be any scratch marks on the tiles.
Bleach or sodium hydroxide lye which can destroy all perimeter vegetation burn your skin and eyes and potentially degrade your asphalt shingle performance.
Regular cleaning is an important part of keeping a slate roof in working order.
Small amounts of dirt are usually not a problem as opposed to when large parts of the roof are covered with moss.
Both artificial slates and natural slates have to deal with moss and pollution in the long run.