Every house has a roof, and every roof is subject to damage from the build up moss. Not only can it this look unsightly, it can do a lot of damage to the home. The moss, left untreated or removed can 'lift' the roof slates as it grows, inviting in the weather into the woodwork, and damp woodwork increases the risk of all sorts of insects. All this can lead to a great deal of expense to repair, and if left, ignored, can ultimately devalue the property.


For most of us this is a task too far, therefore we need to employ specialist help, help that is reputable and trustworthy. Give it a fresh start with a clean slate Cleaner Slates!


Moss Growth Slate/Roof Damage.

Moss growing on any roof surface will be more severe on roof sections that area shaded and exposed to periodically damp cool weather conditions. Shade over the roof is often the determining factor but shingle chemistry is also involved - some roof shingle materials contain algaecides or fungicides which will also retard moss growth on the roof surface. You'll also notice that moss, lichens, and usually algae and fungus will be conspicuously absent from a roof surface down-roof from areas where galvanized metal, copper, or even aluminium flashing are installed. Mineral salts washing off of these metals will retard moss or algae growth on the shingles. What are the effects of moss growth on roofs? Because moss or lichens growing on a roof surface will hold moisture on the roof longer than other areas, these growths can reduce the life of the roof covering. Particularly where the roofing materials are asphalt shingles or wood shingles, holding water on the roof surface by any means (leaves, debris, moss, or lichens) speeds up wear on these shingles. In freezing climates there may be faster frost damage, cracking, and wear of the shingles under the moss or lichens. Even in non-freezing climates, the roots or growth structures of moss or lichens eventually penetrate and separate the roof shingle materials, speeding their demise. Is lichens on a roof as much of a problem as moss? Lichens growing on a roof surface does not have as much thickness of body as moss, and will hold less water on the roof surface, and is less of a wear factor than moss, therefore if we have only lichens growing on a roof surface we would be less quick to try to clean it off since lichens not only has a tighter "grip" on the roof surface but the cleaning process for lichens risks doing more harm than good to the roof surface.


Moss Prevention Cleaner Slates

There are about 101 ways to clean your roof. Should you use chemicals or some type of pressure cleaning? What methods are environmentally sound? What about damage to the roofing material itself? There are a number of elements including sun, wind, rain, and airborne pollutants that can damage your roof. If your home has trees nearby, moss from the trees can drop on the roof, take hold, and produce a fine crop in a relatively short time. If left untreated, moss (with its amazing sponge-like capacity for holding water) can dramatically shorten the life of your roof. Algae, depending on your region, may cause unsightly staining and discoloration. While there are a variety of options--and certainly your roof will have specific requirements--its important to remember the cumulative effect different types of chemicals and agents have on the environment. To preserve your roof, clean it at least once on a 5 yearly cycle and prune nearby trees to control moss. If you choose to use zinc strips to control moss, consider installing them only on north-facing roofs where moss is more likely to be a significant problem. A professional roof cleaning service will be able to help you care for your roof and avoid premature replacement as a result of damage from weather or moss and algae.