Fosroc Nitoseal MS50
Fosroc Nitoseal MS50 is a one part, medium modulus sealant based on hybrid silyl modified polyether technology.
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AREAS OF USE;
Fosroc Nitoseal MS50 is suitable for sealing joints in Concrete, Brickwork, Blockwork, Perimeter sealing around doors and windows, Non-trafficked floor joints: reservoirs, sewage tanks, sea walls, basements, bridges etc.
- Excellent adhesion to most common building materials „ Single component with fast rate of cure
- Easy to apply at low temperature
- Can be applied to damp substrates
- Environmentally friendly
- Primer-less for most applications
- Available in a range of colours
- Isocyanate free technology
Where shown on the contract documents, the one part sealant shall be Nitoseal MS50 manufactured by Fosroc. It shall provide good UV protection and have a movement accommodation factor of 20%.
Preparation joint surfaces must be clean dry and free from all dirt, laitance, loose material and foreign matter. Remove all rust, scale and protective lacquers from metal surfaces. Removal can be achieved by rigorous wire brushing, grinding or grit blasting. Joints in concrete should preferably be sawn. After sawing all saw slurry must be flushed away and the joint allowed to dry. When resealing, the existing sealant should be removed from the joint and the arris cleaned back to sound clean concrete. All debris should be removed. 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. The use of a bond breaker is not required in expansion joints containing cellular polyethylene joint filler such as Hydrocell XL. For construction or contraction joints, a 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 sealing and remove immediately after tooling is completed. Priming In joints where limited movement is expected, a primer is not normally required. In joints subject to high movement or intermittent immersion during service, Fosroc Primer MS1 is recommended. Prime the joint face using a clean, dry brush. Avoid over application of primer causing puddles in the bottom of the joint. Nitoseal MS50 should be applied between 30 minutes and 4 hours after priming. If a joint is left unsealed for more than 4 hours, the primer should be removed by grit blasting or grinding and the joint re-primed.
Cut the end off the sachet and place in the Fosroc GX gun. Fit the nozzle and cut at 45° at a suitable size for sealing the joint. Extrude the sealant firmly into the joint. Tool flush within 5 minutes of application to ensure good contact between the sealant and the substrate.
Clean tools immediately after use with Nitoflor Sol.