Solutions for Waterproofing & Ceramic Tile Application on Gypsum Boards and Plaster Surfaces

Surface Preparation

Before waterproofing and ceramic tile application on gypsum boards and plaster applied surfaces, it must be ensured that gypsum boards are sound. Gypsum boards or plaster applied surfaces are the absorbent and that are exposed to flexing movement. Prior to the waterproofing application, the substrate should be primed with 4505 Kalekim Astar (Primer) to reduce its absorbency and a proper adhesion surface should be formed. Expansion joints between the panels should be filled with 8001 Kalemastik against possible cracking.

Waterproofing Application

A single component, acrylic based, under-tile waterproofing material 3111 Elastiser, which can be easily applied on gypsum boards or plaster surfaces, should be applied in wet areas such as bath, shower, WC. Gypsum boards or plaster surface floor wall and corner joints should be reinforced with 3501 Kalekim Waterproofing Tape(Type III). The tape must be installed carefully on the waterproofing material, the first layer of which has been applied with a brush or a roller, in a way that the center of the tape matches with the joint. The second layer must be applied after waiting for 4-6 hours between layer application depending on the ambient temperature. After the surface dries, it must be waited for 7 days for full setting and leak-tightness tests should be carried out for 24 hours.

Tiling and Grouting

In tiling application on waterproofing material S1 class flexible adhesive mortar 1054 Technoflex should be used at least in order to tolerate the flexing movements of the gypsum board. 2500 Ultrafuga Flex grouting mortar, which is resistant to dirt and flexible thanks to its silicone additive, should be used for the application of a long-lasting grouting mortar in continuously wet areas such as bathrooms, showers, WC.

APPLICATION LAYERS

1. Gypsum Board / Gypsum Surface       
2. Elastiser (1st Layer) / İzolatex (1st Layer)
3. Kalekim Waterproofing Tape (Type III)  
4. Elastiser (2nd Layer) / İzolatex (2nd Layer)
5. Technoflex                            
6. Ceramic Tile
7. Ultrafuga Flex