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32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf

CONTENTS CONCRETE REPAIR CORROSION CONTROL GROUTS & ANCHORS PROTECTIVE COATINGS INDUSTRIAL FLOORING SURFACE TREATMENTS JOINT SEALANTS CONCRETE JOINTING JOINT FILLERS WATERPROOFING WATERSTOPS ROOFING TIMBER FLOORING ALPHABETICAL INDEX 157 Application of Nitoprime DG should not commence if the temperature of the substrate is below 2°C. Application of Dekguard Elastic should not commence if the temperature of the substrate is below 5°C. Application rates are theoretical and assume ambient temperatures of 20°C. If ambient temperatures and/or substrate temperature drops below 10°C, reduced application rates should be expected and allowed for. Any areas of glass should be masked. Plants, grass, joint sealants, asphalt and bitumen-painted areas should be protected during application. Nitoprime DG should be applied first. It should be applied in one or more coats until the recommended application rate of 0.4 litre per square metre has been achieved. This is best accomplished by using portable spray equipment of the knapsack-type. A uniform surface appearance (sheen) should be achieved. If any matt porous patches remain, a further application of primer should be made. The primer should be allowed to dry for a minimum of two hours (at 20°C) before continuing. Under no circumstances should the primer be overcoated with Dekguard Elastic until the surface is properly dry. Dekguard Elastic may be applied by the use of suitable brushes, rollers or spray equipment. All primed substrates should be treated with two coats of Dekguard Elastic. It is important that no gaps or ‘raw edges’ appear in the finished coating. Special care should be taken to provide an unbroken coating at external corners and similar exposed protrusions. The first coat should be applied to all areas by the use of suitable brushes, rollers or spray to achieve a uniform coating with a wet film thickness not less than 400 microns. This coat should be allowed to dry until firm to the touch. Typically, this will be after about 16 hours in dry weather at 20°C. The second coat of Dekguard Elastic should be applied exactly as detailed above, again achieving a wet film thickness not less than 400 microns. Under poor drying conditions at low temperatures it may be more practical to apply three thinner coats (270 microns wet film thickness each) of Dekguard Elastic to achieve better ‘through-drying’. This method will achieve the correct recommended dry film thickness. Spray Application When being applied to well prepared surfaces (no blow holes) it is possible to spray apply Dekguard Elastic. This can be a substantial time saving on a project. Multiple coats must still be applied to meet the required thickness, allowing each coat to dry as detailed above. Suitable equipment includes Graco 795 or Graco 1095 airless running at 3000 psi and utilising 19 thou or 21 thou spray tips. For further information contact contact Parchem. Cleaning Renderoc FC and Dekguard Elastic should be removed from tools and equipment with clean water immediately after use. Nitoprime DG should be removed from tools and equipment using Solvent 10. Limitations The Dekguard Elastic system is formulated for application to clean, sound concrete or masonry. Where application over existing sound coatings or paints is required, trials should be conducted to ensure compatibility and retention of the bond between the underlying coating and the substrate. When applied over existing coatings or paints, the performance characteristics of Dekguard Elastic may be impaired and its fire rating invalidated. Compatibility and soundness should be assessed on a trial area. For further advice, consult your local Parchem sales office. Application of Nitoprime DG should not commence if the temperature of the substrate is below 2°C. Application of Dekguard Elastic should not commence if the temperature of the substrate is below 5°C. Reduced application rates will occur at lower ambient/substrate temperatures. Dekguard Elastic should not be applied where there is a likelihood of exposure to frost within 48 hours of the application. The product should not be applied in windy conditions where early-age dust adhesion may occur, or where rain is likely within 2 hours at 20°C or 20 hours at 5°C (up to 80% RH). It should not be applied when the prevailing relative humidity exceeds 90%. The use of Dekguard Elastic should not be considered for areas subjected to exposure to ponded water. Dekguard S should be considered where occasional ponded water is anticipated. Estimating Supply Renderoc FC: 15 kg bags Nitoprime DG: 20 litre drums Dekguard Elastic: 15 litre drums (PC: 560600) Solvent 10: 4 & 20 litre drums Coverage Renderoc FC: 9.0 litres (3.0 m² at 3 mm thickness) Nitoprime DG: 2.5 m² per litre (total) Dekguard Elastic: 1.25 m² per litre (total) The coverage figures given are theoretical - due to wastage factors, low temperature at application and the variety and nature of possible substrates - practical coverage figures will be reduced. Fosroc® Dekguard Elastic


32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf
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