When choosing a product you will also need to be aware of the type of environment and conditions it is situated in.If your roof is already coated then it is very important that you identify the type of existing roofcoating, this is needed to ensure the new product you are going to use is compatible. This is critical for a sucessfull job as these data sheet will inform you of the correct, mixing, and application methods for that product. Plastic and tiled roof will require alternative methods of surface preparation.For example: do not apply alkyd gloss coatings over epoxies or polyurethanes, or rubber based products over bitumen coatings.In some cases it maybe more preferable to replace the roofing rather than re coat due to cost.Sooner or later they will come a time when you will need to consider the maintenance coating of your external roofing,due to its deterioration from errosion, corrosion, or enviromental impact.
With all these factors influencing the performance of your roof coating, you can understand that some planning is required before you go ahead and purchase your new roof coating.
Before you choose a product to use, first you need to be armed with some general information to give to your supplier,to enable them to recommend the correct roof coating.Once you have choosen your product the next step will be to ensure you read the MTDS (manufacturers technical data sheet , and the msds (manufactueres sdafety data sheet. If you apply a new roof coating that is not compatible with the existing coating ,this can lead to many problems such as blistering,saponification, and poor adhesion.They are different types of roof coatings for different types of climates such as coastal,tropical,and cold climate areas, and coatings formulated for high impact areas, heavy rainfall and high periods of sunlight, as high amounts of ultra violet rays can breakdown the coating.
Not only do you need to be aware of compatibility problems but you also need to know the type and standard of surface preparation that will be required for the choosen product. Most roof coating suppliers will be capable of recommending the correct type of coating,but you will need to give them this information for they recommendation to be as accurate as possible.Other products may require you to completely remove the existing coating by means of chemical stripping or mechanical grit blasting.
This will include the type of roof to be coated, the base material of the plastic stool Manufacturers roof (metal, plastic, timber, tiled) and the current condition of your roof. Some coating products can be applied over an existing compatible coated surface,with minimal surface preparation.They are many types of roof coatings on todays market and it can be quiet dauting trying to identify the correct coating for the job,especially if you have no idea of what is required.Roof coatings do not last forever and when it comes round to tackling this task,unless you have some knowledge or experience of roof coatings there could be problems ahead