Thioflex 600

• Meets key international standards.
• Forms a tough, elastic, rubber-like seal.
• Accommodates continuous and pronounced cyclic movement.
• Excellent adhesion to most common substrates, including primed concrete, glass, aluminum and stainless steel.
• High resistance to aging reduces physical damage due to climatic extremes.

Sealing movement joints in building and civil engineering structures, including superstructures, floors, basements and subways.

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 Fosroc Equipment Cleaner.

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.

Note: The use of a bond breaker is not required in expansion joints containing Hydrocell XL or Expandafoam cellular polyethylene expansion joint fillers. For construction or contraction joints a bond breaker tape or back-up strip should be used where hydrostatic pressure exists,only bond breaking tapes must be used, not foamed back-up strips.

Where a particularly neat finish is required, mask the face edges of the joint before priming and remove immediately after tooling is completed.

Priming - When Fosroc Primers P7 or 7E are required, these should be used as follows:

• Fosroc Primer P7 - It is a one part chemically active clear liquid for brush application to concrete, stone, brickwork, timber and unglazed edges of ceramic tiles. One thin coat should be applied using a clean, dry brush, ensuring complete coverage.Avoid over priming resulting in an excess of primer in the base of the joint or application beyond faces. The mixed Thioflex 600 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. After 3 hours the surfaces must be re-primed before applying the sealant.
• Fosroc Primer 7E - It is a two part primer for brush application to concrete, stone, brickwork, timber and unglazed edges of ceramic tiles, where joints are to be intermittently or permanently immersed, or where the substrate is likely to be saturated and/or where compliance to EN14188 is required. When using Fosroc Primer 7E, empty the entire contents of the hardener tin into the base, replace the base tin lid and shake thoroughly. Prime the joint face using a clean dry brush. Avoid over application of the primer causing puddles at the bottom of the joint. Thioflex 600 should be applied between 30 minutes and 4 hours after priming. If the joint is left unsealed for more than 4 hours, the primer should be removed by grit blasting or grinding and the joint re-primed. Do not split packs of Primer 7E. Iron and steel must be protected with an anti-corrosion primer prior to sealing.

Mixing

• Gungrade - Thebasecomponentand curingagentaresupplied ready for mixing in a single tin. Mix thoroughly using a slow speed drill (300 to 500 rpm)fitted with a Fosroc Sealant Mixing Paddle. Mix for 3 minutes then scrape down the sides and bottom of the tin using a spatula, mix for a further 2 minutes. Only thorough mixing, including material right at the bottom of the tin, will result in proper curing. In cold weather Thioflex 600 mixes more easily if stored overnight atroom temperature. Immediately after mixing, load the sealant into a Fosroc ‘G’ Gun using the Follower Plate, and apply to the joint.
• Pouring Grade - Thioflex 600 pouring grade is supplied in a tin which contains both the base component and also the hardener within a removable tray. The hardener contents should be transferred to the tin, and mixed as per the gun grade instructions. The pouring grade may be poured directly into horizontal joints or for application to horizontal joints less than 15 mm wide loaded into a Fosroc ‘G’ Gun.

Finishing - Thioflex 600 should be tooled to a smooth finish. A minimum of surface lubricant such as dilute detergent solution may be used to assist the process. Any masking tape should be removed immediately after tooling.

Cleaning - Clean equipment immediately after use with FosrocEquipment Cleaner.

Contract Application - The designer or contractor may wish to use the services of a specialist sub-contractor for joint sealing work. Names of specialist sub-contractors are available from Fosroc.

Maintenance - No special requirements, any damage identified during normal building inspections should be repaired or replaced as appropriate.

Guide to Quantities

1 liter of Fosroc Primer P7 to 30 liters of Thioflex 600.

These are theoretical yields. No allowance has been made for variation in joint width or wastage.

Guide to Thioflex 600 Primer Coverage

These are theoretical values. No account has been taken of variances in substrate, absorptivity or wastage.

Over-painting of sealants is not recommended because of the inability of paint films to accept movement. However, if definitely required, trials should be carried out to determine
compatibility. Thioflex 600 should not be used in direct contact with materials containing pitch or bitumen. Thioflex 600 is not suitable for use in contact with potable water; Nitoseal MS600 should be used.

Thioflex 600 must be fully cured before permanent immersion in water

Thioflex 600 has been evaluated in microbiologicallyactive situations and has been shown to have resistance to aerobic conditions.

• British Standard EN14188-2:2004.*
• U.S. Federal Specification TT-S-00227E November 1969 (amended 1970).
• DTp specification for Highway Works December 1991 series 1000 clause 1017.
• ASTM C920-87: Type M, Grade NS, Class 25.
• Thioflex 600 complies with LU Standard 1-085 ‘Fire Safety Performance of Materials’.

*Use of Fosroc Primer 7E required.

Storage life of 12 months in original containers when kept in dry conditions between 5°C and 27°C.