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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 ROOFING WATERSTOPS WATERPROOFING JOINT FILLERS TIMBER FLOORING ALPHABETICAL coatings are delaminating then remove all loose and delminating coatings back to a sound firmly adhered edge then apply one coat of Emer-Coat Clear Sealer. Enamel / Oil Based: Depends on underlying substrate. For steel, abrade and apply Emer-Gard Primer Type 2. Other substrates refer to your local Parchem sales office. Timber surfaces: Treat previously painted surfaces as above. Prime: One coat of Emer-Acrylic Sealer. Note: do not apply Emer-Acrylic Sealer over old oil based paints. Powdery Paintwork or Absorbent Masonry Surfaces: Should be sealed with one coat of Emer-Coat Clear Sealer. Overcoating old Emer-Clad: Clean the surface with mild detergent, rinse with clean water, allow to dry. No primer required if the existing Emer-Clad is sound and in good condition. If existing Emer-Clad is delaminating then remove all delaminating coatings back to a firmly adhered edge then apply one coat of Emer-Coat Clear Sealer. Application Apply Emer-Clad by brush, roller or airless spray to the previously primed surface. Previously primed and prepared surface: Apply a minimum 2 coats of Emer-Clad protective coating to achieve a dry film thickness of not less than 250 microns. Coverage approx 2 m2 /litre finished film (ie 4 m2/l/coat). First coat to be Emer-Clad Matt. Final Coat to be Emer-Clad Satin or Matt (Satin exhibits better self-cleaning properties). To visually facilitate coverage and ensure adequate film build, different colours may be used for each coat of Emer-Clad. Note: do not apply any materials during damp or rainy conditions or where there is likelihood of rain. Temperatures above 30°C reduce the wet edge time and, as with other INDEX 190 water based coatings, may increase the risk of showing lapmarks and rollermarks after drying, especially with darker colours. Dark colours may show slight oxidisation over time. This can be removed temporarily by cleaning, but will not affect the performance of the coating. Movement joints Ideally, Emer-Clad should not be applied over movement joints as the amount of movement may be more than the capability of the membrane. Joints should be first sealed with the appropriate joint sealant then the Emer-Clad applied up to the edge of the joint. When this is not practical, all expansion and movement joints should be sealed with Emer-Seal MS. Polyurethane sealants should be avoided as they can bleed plasticisers into the coating above. In all applications where Emer-Clad is applied over movement joints or at floor to wall junctions, Emer-Clad must be reinforced with a suitable fabric such as Sontara or Emer- Proof Elastic Joint Band Tape (refer to TDS). The Sontara reinforcing fabric must extend at least 100 mm either side of the joint. Glass fibre reinforcing must not be used as glass fibres reduce the elasticity of the membrane and are difficult to wet through. Glass fibre mat reinforcing has been shown to create a weak delamination layer in the membrane and glass fibres that are not fully encapsulated with Emer-Clad have been shown to cause a ‘wicking’ effect allowing water to pass through the membrane. Spray Application When being applied to well prepared surfaces (no blow holes) it is possible to spray apply Emer-Clad in a single coat to achieve the 250 micron dry film thickness (500 micron wet film thickness). This can be a substantial time saving on a project. 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 Parchem. Drying times At normal temperature, 18°C to 20°C, Emer-Clad will dry and can be recoated within 2 hours after application. In very cold or humid weather, allow overnight drying between applications. Do not apply at temperatures below 10°C, or when temperature may fall below 10°C during the drying period. Colour Standard colours are white, light grey and mid grey. Colour Matching: Emer-Clad is able to be colour-matched to most colours. Emer-Clad is available in Matt or Satin finish. Emer-Clad® Architectural


32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf
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