Vitcas Ltd guarantees the quality of the products but has no control over the way in which the products are used. In addition to these recommendations, the requirements of the building regulations, the recommendations of the appliance manufacturer and general health & safety considerations may be applicable. These instructions and recommendations define the material and the method of use but cannot be considered as a substitute for the skills, training and qualifications of the contractor. Wear suitable gloves and eye face protection. After contact with skin, wash with water. In case of contact with skin and eyes rinse immediately with plenty of water and seek medical advice. Keep any unused material dry and store in a cool dry place away from children and pets. If you need help for the amount of product to buy you can use Vitcas Quantity Calculator Instruction how to use Vitcas Heat Resistant Plaster or Watch on Youtube VITCAS® HEAT RESISTANT PLASTER must be allowed to air dry for at least 3 days before lighting fire. When dry the finished surface forms a very hard heat resistant surface that can be painted over as required. It is possible to re-coat the material with PVA and reskim after the plaster has dried if a second coat is necessary for any reason. Any minor cracks can be repaired using VITCAS® HEAT RESISTANT FILLER. The surface finish must be obtained during flotation with the trowel because the material cannot be sanded when dry due to the surface being dense and non-porous. After 15 to 20 minutes the surface should be trowelled up smooth. The plaster should be first applied so that the surface is flat but not necessarily smooth. It is important that the plaster is applied evenly i.e. A thickness of approx 3-6mm should be applied. As a guide the amount of water required is approximately 200 ml per kilo of plaster. Take care not to mix the material too wet. It is best to mix the plaster in the bucket in which it is supplied. There should be no traces of ordinary Portland cement or gypsum plaster on the tools or in the mixing buckets. The material should be mixed with cold tap water to a useable consistency with a plaster mixer / drill attachment. Plastering should commence when this PVA becomes tacky. In both cases the area to be covered should be prepared by coating with undiluted Vitcas®PVA Adhesive Sealer. If applying onto VITCAS®HIGH TEMPERATURE PLASTERBOARD then the boards should be fixed with the rough reverse face exposed for plastering. If possible apply heat after day one ie light the fire or use another type of heater. The Vitcas®Fireplace Render should be left to dry for at least 3 days in temperatures above +20☌ and for longer if moisture is still present as apparent by the colour of the material. If applying onto VITCAS®FIREPLACE RENDER it is important to ensure that the Vitcas®Fireplace Render is fully dried prior to applying Vitcas®Heat Resistant Plaster. The maximum recommended thickness of the material is 6mm. *We recommend rendering and plastering the whole chimney breast with VITCAS® RENDER & PLASTER SYSTEM. The plaster can only be applied onto Vitcas Fireplace Render or onto Vitcas High Temperature Plasterboards. The plaster should be used in the areas subject to intense heat approx 3m2 (32 ft2) around the fire opening. The procedure for mixing and applying Heat Resistant Plaster is NOT the same as for ordinary Gypsum Plaster. For use around the opening of cassette fireplaces (sometimes called hole in the wall fires) and adjacent to wood burning stoves and range cookers where the area of the wall is subjected to intense heat. Protection up to 650☌ (1200☏) Vitcas Heat Resistant Plaster is a replacement material for gypsum plaster where the temperatures are too high for gypsum plaster to stay on the wall. Heat Resistant Plaster is high temperature smooth finish render.
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