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Technical Dayta Sheet Compedium

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 Fosroc® Thioflex 600 Gun Grade Dilute oxidising acids Not resistant Solids content: 100% Density: 1.47 kg / litre Maintenance No special requirements, any damage identified during normal building inspections should be repaired or replaced as appropriate. Specification Clauses Where marked on the drawings, joints shall be sealed using a two-component, non-sag, polysulphide joint sealant. The sealant must be capable of reaching initial cure in 24 hours at 25°C and full cure in one week at 25°C. The sealant must be capable of accommodating repeated cyclic movement of up to plus 30% and minus 30%. The sealant must provide an excellent bond to common masonry, metal glass and ceramic surfaces when used with the appropriate primer. The sealant manufacturer must be accredited to ISO 9001 and the sealant must be installed by a pre-qualified contractor nominated by the supplier. Such a product is Thioflex 600 Gun Grade supplied by Parchem. Application Instructions Joint Preparation The joint surfaces must be thoroughly dry, clean and frost free. Remove all dust and laitance by rigorous wire brushing, grinding or grit blasting. Remove all rust, scale and protective lacquers from metal surfaces. Remove any oil or grease with Solvent 10. Any expansion joint filler must be checked to ensure it is tightly packed and no gaps or voids exist at the base of the sealing slot before positioning a bond breaker tape. Note: The use of a bond breaker tape is not required in expansion joints containing polyethylene foam joint fillers. For construction or contraction joints polyethylene bond breaker tape or back-up strip must be used. Where a particularly neat finish is required, mask the face edges of the joint before priming and remove immediately after tooling is completed. Priming non porous surfaces Primer 4: For use on metals, glass and ceramics. It is a one-component chemically active clear liquid for brush or pad application. One thin coat should be applied and allowed to dry for a minimum of 5 minutes prior to sealant application. Priming porous surfaces Primer 7: It is a one-component chemically active straw coloured liquid for brush application to concrete, stone, brickwork, timber and unglazed edges of ceramic tiles. Apply an even coat of Primer 7 to the bonding faces of the joint. Excessively porous surfaces may need more than one coat – this is evident where applied primer does not give a smooth, glossy surface when dry. Allow final coat to become touch dry (approx. 1 hour) before application of Thioflex 600 Gun Grade. Any primed areas not sealed within 8 hours of primer application will need to be re-primed 1 hour prior to sealant application. Priming surfaces subject to immersion Joints subject to water immersion should be primed with Primer 13, a two-component epoxy primer with exceptionally good hydrolytic stability. Allow Primer 13 to become touch dry (approx. 1 hour) before applying sealant. Note: ceramic tiles with unglazed edges should have those edges primed as noted, except where they are to be permanently water immersed, they should be primed with Primer 13. Important for all primers Avoid over priming resulting in an excess of primer in the base of the joint or application beyond faces. The mixed Thioflex 600 Gun Grade must be applied when the primer is tack free, that is after the evaporation of the solvent but before the primer film has completely reacted. If joints are not sealed within 8 hours of primer application, they must be re-primed and allowed to become touch dry as previously stated. Mixing The base component and curing agent are supplied ready for mixing with the curing component packed in a separate container under the lid of the base component can. Mix thoroughly using a slow speed drill (300 - 500 rpm) fitted with a mixing paddle - Heavy Duty Mortars for 5 minutes. Only thorough mixing of the entire contents of the tin, including material right at the bottom of the tin, will result in proper curing. In cold weather Thioflex 600 Gun Grade mixes more easily if stored overnight at about 23°C. Immediately after mixing, load the sealant into a Sealant Gun - Long Barrel Bulk by drawing the sealant up into the gun through a suitable follower plate, and apply to the joint. Finishing Thioflex 600 Gun Grade should be tooled to a smooth finish. The use of surface lubricants such as detergent solution is not recommended as this may adversely affect colour stability and weathering performance of the sealant. Any masking tape should be removed immediately after tooling. Cleaning Clean equipment immediately after use with Solvent 10. Page 2 375


Technical Dayta Sheet Compedium
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