BEYEM FIR YESO is an enhanced cement based tile adhesive, formulated with white cement, selected aggregates and special additives to improve workability and adhesion. No vertical slip. Allows adjustment of tiles. BEYEM FIR YESO is formulated with special additives that prevent the formation of expansive salts by reaction of calcium sulfate of gypsum substrates with cement.
Laying of ceramic tiles of medium/high absorption on plaster substrates in interior walls and floors. Especially suitable for laying ceramic tiles of small and medium format and IIb / III group.
BEYEM FIR YESO is suitable for:
- Projected plaster, plaster boards, and plaster panels.
- Gypsum based substrates.
- Cement based substrates.
- Cement based renders /plasters and screeds.
- Concrete floors.
Substrates must be clean, compact and free of substances that reduce adhesion such as dust, oil, grease and with no loose material. Uneven areas must be corrected with suitable smoothing and finishing products. Substrates must be free from any rising damp and have already completed the curing period of hygrometric shrinkage. Dampen substrates with water to cool down if they should be too warm, in case of wind or over absorbent substrates and wait until the thin layer of water disappears. Do not use on paint.
Mix manually of mechanically BEYEM FIR YESO with 5,75-6,75 l per bag of clean water until a homogeneous, creamy and lump-free paste is obtained. Let the mix stand for 5 minutes before application.
Small tiles must be fixed using a notched trowel of 6×6 mm. For tiles sizes greater than 400 cm2, a notched trowel 8×8 mm must be used. Spread the mixed product onto the substrate to a maximum surface area of 1 m2 or no more than can be tiled within 20/30 minutes in normal conditions. Unfavorable environmental conditions (strong sunlight, drying wind, high temperature as well as a highly absorbent substrate), could drastically reduce this time to a few minutes. Bed the tiles firmly into the adhesive with a slight sliding and/or twisting action, to ensure a good contact and complete coverage.
It is good practice to lift an occasional tile after fixing, to verify that the required contact is being achieved. Back of the tile must be completely wet.
BEYEM FIR YESO is packed 25 kg plastic lined paper bags.
Storage: when stored unopened in a cool dry place, shelf life is 12 months from date of manufacture.
Tools can be cleaned easily with water before the product hardens. Hardened product can be remove only mechanically.
Laying of ceramic tiles on plaster/gypsum substrates must be carried out with cement based adhesive compliant with EN 12004-1 – Annex ZA, such as Beyem Fir Yeso manufactured by Rodacal Beyem company. The substrate must be compact, free from any flaky, loose parts and must be clean and cured, having already completed the shrinkage stage. Existing joints must be respected and elastic fractionizing and perimeter joints must be created. Ceramic tiles must be laid with joint-gap spacers with a width of ___ mm.
For further and complete information about the safe use of our product please refer to our latest version of the Safety Data Sheet, which is available upon request.
Disposal of the product and packaging must be in accordance with current legislation. This is responsibility of the final product user.
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