Surface preparation

Surface preparation is one of the most important stages when applying waterproofing and ceramics on underfloor heating floors. The application area must be sound, dry, clean, dust-free and transportable. All oil, rust, solid lubricating oil and paraffin residues, which can weaken the adhesion, must be completely removed from the surface. Any excess debris should be removed from the surface and the surface should be saturated with moisture. If there are iron or wooden pieces on the surface, they should be removed and the gaps should be repaired two days in advance with a suitable repair material This repair process ensures that the surface is properly fixed.

The surface should be primed with Universal Primer to reduce water absorption and increase adhesion. Thermal and leak tests of the underfloor heating system must be carried out in advance and a positive result must be ensured. Cracks or other structural problems should not occur in the screed used for the heating system, only after these problems are solved, it is possible to proceed to the stage of waterproofing and ceramic application.

Application of waterproofing

Two-component flexible waterproofing materials should be used for bathrooms and other wet spaces. Waterproofing products such as Izopower B40 or fully elastic B70 UV Izopower can be applied. Since the joint lines on the floor, walls and corners are weaker, reinforcement should be done with Izopower Pah Bands in these areas.

The first layer of waterproofing material should be applied with a brush or roller, at this stage the exact middle of the chamfer band should be placed in such a way that it coincides with the joining lines of the surfaces. Each layer is applied in opposite directions to ensure complete waterproofing of the surface. Between each new coat there should be a waiting period of 5-6 hours depending on the ambient temperature. After the application, at least 7 days must be waited for the waterproofing layer to dry completely. After installation, a 24-hour leak test should be performed to verify the insulation's leak-tightness.

Ceramic bonding and joint filling application

In underfloor heating systems, durable adhesive materials should be used against the risks of stretching and shrinkage in the floor as a result of temperature changes. According to EN12004-1 standards, adhesive products of minimum class C2 and S1 are recommended. According to these standards, FugaPower Flex CG2W adhesive is resistant to temperature changes and is an ideal choice for use in underfloor heating.

FugaPower Regular CG1 or FugaPower Pro CG2W silicone-containing, flexible and antibacterial joint fillers should be used for long-lasting and high-quality joint filling in wet spaces such as bathrooms. These materials ensure both the firm adhesion of ceramics and long-term durability and hygienic conditions in wet areas.