Options for Rooftop Waterproofing
Primarily, there are two options for roof waterproofing, felt paper and coating materials. Our company provides both options, but for many reasons we strongly recommend the solution of waterproofing with coating materials, which, as you will see below, have significant advantages. Possibly, other solutions will be proposed to you as well (lightweight concrete, tar, etc.), but the results will be either dubious or null!
Coating materials for roof waterproofing
The brushable sealants are materials that we pread on the roof and which offer waterproofing. Most of them are distinguished by reflective properties as well, assisting in the partial reflection of thermal radiation. Thus contributing, to a degree, in the summer, to not quite raising the temperature, which is based primarily on their colour (usually white), compared with the dark felt papers which are attracting radiation. In no case, however, you should not consider – or to be convinced by anyone – that with the coating materials or any other sealing solution, you will also have thermal insulation.
Useful Information on the spreadable coating materials
In order for the spreadable coating materials to have a good result, two coats should be applied – as appropriate – the consumption for two of these coats to be within 1-1,5kg per square meter. Consumption depends on the type of the brushable coating material, the methods of application and, mainly, the existing surface of your roof (how smooth or rough it is).
The work from a partner crew of ours is around 2-4 € / m² + VAT for the two coats that will be needed, the prices vary depending on the size of the surface and the condition of the roof (if cleaning is necessary).
As for the materials, there are 3 types of spreadable coating materals in the market. Each category is based on a different chemical composition, which ultimately determines the life, the technical specifications and the cost of each material. You will see their prices in detail below, but keep in mind that you will need a primer as well (which costs about 1-1,5 € / m²), unless you choose the silane resin coating materials, which we recommend as the most appropriate solution for roof waterproofing and primer is not required in most cases. Let’s briefly take a look at these three types of spreadable coating materials: