The final stage to the work is to apply two coats of a protective coloured coating or a clear acrylic sealant.
The majority of calls we receive from homeowners and business premises require the moss to be removed from the roof tiles. When this is done on concrete tiles then the cleaning process accelerates the natural wear and tear by removing the top layer, just check your gutters for evidence of the natural erosion that occurs over the life span of the tiles. For clay and slate tiles, being a natural stone then this is not a problem and these surfaces can clean up beautifully showing to full effect the wonderful patina of natural stone.
The concrete tiles therefore become more porous after the cleaning process and will be prone to further aggressive moss and algae infestation within a limited time frame. It therefore makes perfect sense to re-coat the tiles with one of 7 different coloured protective Climashield roof coatings or for customers who prefer to retain the "just cleaned" appearance then a two coat application of clear roof sealer is appropriate.
Prior to the protective coating an application of moss and algae killer is applied to ensure any remaining spores are killed off.
The application of the product is via an airless sprayer, this expensive pro level piece of equipment ensures that the installer has complete and accurate control on the amount of product that is being applied. For concrete tiles then we apply a heavy first coat ensuring significant penetration into the tile surface to increase longevity of colour retention and moss inhibiting properties. After a suitable drying time then a second coat is applied to the whole roof.
For clay and slate tiles then a clear coating is normally applied but in thinner multiple layers as the absorbency of these products differs significantly from pre-cast concrete tiles.
It should be noted that all installers take every precaution to limit over-spray by sheeting up conservatories and any other "at risk" areas ,in a lot of jobs the gutters etc, are all covered.
Prior to completion a full site inspection and walk around with the owner is carried out.
For any roof coating or roof sealing work you require we can organise a FREE no obligation quotation from a professional fully insured contractor by calling 0800 849 9498 or if you prefer to complete our on line enquiry form please click here and we will call you back .
We cover the county of Surrey for roof cleaning , roof coating and moss removal including the following Banstead, Coulsdon, Chertsey, Cobham, Esher, West Byfleet, Addlestone, Wimbledon and Walton on Thames.