Page 336

Technical Dayta Sheet Compedium

CONTENTS INDEX 324 Technical CONCRETE REPAIR CORROSION CONTROL GROUTS & ANCHORS PROTECTIVE COATINGS INDUSTRIAL FLOORING SURFACE TREATMENTS JOINT SEALANTS CONCRETE JOINTING ROOFING WATERSTOPS WATERPROOFING JOINT FILLERS TIMBER FLOORING ALPHABETICAL Data Sheet Fosroc® Gap Filler Economical, flexible, paintable, water based acrylic general purpose gap filler Uses The excellent bond and paintability of Gap Filler make it ideal for a wide range of applications such as: „ Sealing window and door frames „ Sealing around ceramic tiles „ General caulking and pointing „ Crack filling prior to painting Advantages „ Simple to apply and finish „ Excellent adhesion to most building materials „ Fast drying, non staining „ Permanently flexible „ Can be painted or papered over „ Adheres to damp surfaces „ Cleans up with water Description Gap Filler is a non-slump acrylic latex sealant in paste form It has very good application and finishing characteristics, forms a smooth skin quickly, and may be painted or covered with wallpaper. Gap Filler is flexible and will accommodate small structural movements between building components such as walls and ceilings, window and door frames. Gap Filler is suitable for both interior and exterior use, but not suitable for use under water. Design Criteria Joint configuration Gap Filler is primarily used in caulking and pointing applications in non-movement gaps. Recommended joint size is 5 mm - 15 mm wide, and 5 mm - 15 mm deep, or up to 25 mm wide in triangular fillets. Joints and gaps up to 25 mm wide can be filled using Gap Filler without slumping, but setting times will be considerably longer than in small sections. For gaps or joint where movement is likely, a more flexible sealant such as Emer-Seal PU25 or Construction Silicone should be considered. As Gap Filler sets by loss of water, some volume shrinkage will always occur, so some allowance must be made for this if a flush surface is required. This shrinkage automatically achieves the concave surface most commonly preferred. Contact your local Parchem sales office for further advice. Properties Data quoted are typical for these products, but do not constitute a specification. Form: Non-slump paste Colours: White Physical or chemical change: December 2009 Page 1 Dries by water loss Skinning time at 20°C 50% RH: 20 minutes Cure rate at 20°C RH: 1 mm per day Application temperature: 5°C - 40°C Service temperature: Minus 40°C - 70°C Movement 5% total (± 2.5%) accommodation factor: Maintenance No special requirements, any damage identified during normal inspections should be repaired or replaced as appropriate. Limitations Gap Filler should not be used where it could be subject to immersion, or in joints subject to foot or vehicular traffic. Do not use in contact with bituminous material. Application Instructions Surface preparation All surfaces should be clean and free from oil, grease or any other surface contaminants. Gap Filler will bond to damp (but not wet) porous surfaces, but is not suitable for application to damp non-porous surfaces. For optimum results Gap Filler should only be applied to dry surfaces. Surfaces which have been in use prior to sealing operations (e.g bathroom tiles and fittings) or have any surface contamination, require special care in preparation. Scrub surfaces with strong detergent solutions and rinse with ample clean water, or scrub with Solvent 10 or Thinners No. 1 and allow to dry completely. Gap Filler requires no primer on common substrates, but surfaces which are very porous, friable or in poor condition may require treatmant - consult Parchem Technical Services for advice. Where Gap Filler is to be applied to a joint subject to any movement, a bond breaking tape should be used at the back of the joint, eg Polyethylene tape or Expandafoam joint backing rod. Where possible a similar bond breaker should be used in the corner of triangular fillet beads. Gap Filler is resistant to rain water once cured, but uncured Gap Filler may be washed from a joint by heavy rain soon after application. DO NOT apply sealant in unprotected areas if rain is likely, or protect freshly sealed joints from the weather. December 2009


Technical Dayta Sheet Compedium
To see the actual publication please follow the link above