There is a huge variety of sealants on the market today. The choice of sealants must be approached carefully, observing all the instructions, instructions and purpose. Today there is a whole range of materials, most often these are various types of plastic (polycarbonate, teflon, PVC, polyethylene and others), to which the level of adhesion of sealants is insufficient. If necessary, a specialized brand sealant should be used with such surfaces, which is expensive. Alternatively, on problematic surfaces, use a conventional sealant in tandem with special primers. By the way, if you want to make a shelf with your own hands, then you will certainly need a sealant.
When a surface is treated in this way, a thin layer is formed between the surface and the primer, which increases adhesion. In places where there is a biologically aggressive environment (bathroom and toilet, kitchen, swimming pool), sealants containing antifungal additives are usually used. It should be remembered that a sealant with antifungal additives is strictly prohibited for products in contact with food. It is recommended to plan the purchase of this finishing material only after a comprehensive analysis of all information: brand, scope, recommendations and product properties..