TILERS PRIMER AS A PRIMER

Once porous, worn or dusty concrete floors have been thoroughly cleaned of all dust, oil & loose surface matter, ARC TILERS PRIMER diluted as 1 part to 3 parts with water and brushed on as a generous single coat, can seal the surface, reduce suction and inhibit further dusting. One coat is normally sufficient for priming surfaces ready to receive an application of ARC SELF-LEVELLING COMPOUND or any ARC TILE ADHESIVE, however very porous surfaces may require two coats or use a 1: 1 dilution to effectively reduce porosity and bind the surface. Cracked or friable surfaces should be repaired before laying any top coatings. ARC TILERS PRIMER is effective on gypsum plaster, porous cement render walls, worn concrete, cement sand floor screeds, cement panel-boards and timbers such as chipboards and worn plywood. Plaster walls which have been over-finished to a polished appearance should be slightly roughened with a stiff brush and wiped clear of loose fines before priming.

TILERS PRIMER AS A SELAER

Timber ply-boards and panels should be clean and free from dust and loose flaking material before being sealed on all exposed faces and edges with neat Arc Tilers Primer, then the 1 to 3 parts water dilution brushed across the surface to be tiled. Adhesive may be applied to the primed surface whilst it is still slightly tacky to touch. Gypsum based materials likely to be tiled over with a cement based adhesive, such Anhydrite floor screeds or Gypsum finishing plasters and must be effectively sealed with 2 coats of neat Arc Tilers Primer with each being allowed to dry before proceeding with the next application.

TILERS PRIMER AS A BONDING AGENT

Arc Tilers Primer can be used as a bonding agent when over-laying existing masonry with a fresh coat of render, plaster, concrete or screed, or when applying cement based tile adhesives to difficult, non-porous surfaces such as existing vinyl floor tiles and steel decking. Wet down the exposed surface so that it is damp but not holding standing water. Arc Tilers Primer can be mixed to a brushable slurry consistency using a mechanical agitator by adding approximately 1 part PRIMER to 1 part neat cement (or 1 part cement based adhesive) to be spread out using a stiff brush, evenly and consistently over the surface. Application of the topping screed or adhesive should proceed before the bonding slurry has completely dried out as surface tackiness will improve the adhesive key. Arc Tilers Primer bonding slurry can also be used as a waterproof tanking slurry when applied as a threecoat treatment to prepared masonry.

TILERS PRIMER AS A CEMENT SCREED / MORTAR ADMIXTURE

When repairing concrete floors, steps or applying vertical renders, Arc Tilers Primer should be mixed at the minimum rate of 5 litres per 50 kg of Ordinary Portland Cement, or adding up to 15 litres where heavy traffic or loads are expected. Mix designs for repair mortars are ideally 1 part OPC to 3 parts zone 3 washed dried sand. When laying thick-section screeds (25 to 50mm) replace 1 part sand with 1 part 6mm dried coarse aggregate and always add just sufficient water to give the mix the required consistency for ease of application. Arc Tilers Primer imparts a strong water-reducing and plasticising effect in concrete and mortar, thus giving improved strength, shrink resistance, long term durability, abrasion resistance and reduced water permeability.