Nitoseal® MS100

• Will not stain masonry, marble or other surfaces.
• Excellent primer-less adhesion to most common building materials.
• Can be applied to damp substrates
• Fast neutral cure.
• Highly flexible with excellent application characteristics.
• Low odor, environmentally friendly.
• Low modulus and high movement capabilities.
• Excellent UV and weather resistance
• Performs as an acoustic sealant
• Good adhesion to silicone, polysulphide or polyurethane contaminant.

Nitoseal MS100 has been formulated for stain-free sealing of joints in and around concrete, brick, masonry, pre-cast panels, stone cladding, windows, doors and fiber cement sheeting.

Preparation - Joint surfaces must be clean and free from frost and rag dry, preferably completely dry. Remove all dirt, laitence, loose materials and foreign matter. Remove all rust, scale and protective lacquers from metal surfaces. Non porous surfaces should be degreased using Fosroc Equipment Cleaner. In all joints an Expandafoam or Hydrocell XL polyethylene foam backing should be used to prevent sealant contact with the back of the joint, and hence allow optimum performance. In shallow joints self adhesive debonding tape can be used.

Priming - Good adhesion can be gained on concrete, timber, metals, ceramics, brickwork and most coating surfaces without the use of primers. On some porous surfaces such as GRC, adhesion will be improved by the use of a primer - refer Fosroc Technical Service for further advice.

Application

• Cartridge - Cut the end off threaded stub on cartridge, screw on nozzle and cut nozzle to desired bead size at a 45o angle. Extrude the sealant firmly into joint to ensure complete contact with joint faces. Smooth finish if necessary with a spatula wetted with a dilute detergent solution.
• Cleaning - Clean tools immediately after use with Fosroc Equipment Cleaner.
• Overpainting - The practice of overpainting sealants which experience a high degree of movement is discouraged as it can result in premature failure of the sealant. However, Nitoseal MS100 may be overcoated with water- based elastomeric coatings such as Dekguard Elastic and exterior emulsion paints such as Dekguard W. Tests should be carried out to confirm compatability of sealant and proposed paint systems. Nitoseal MS100 should be allowed to cure fully before the application of the coating or paint. For best results the sealant should be allowed to weather prior to overcoating.

Nitoseal MS100 is supplied in 380 ml cartridges and 600ml sausages.

To work out quantities (excluding wastage) use the following formula:

S/(W x D) = Lineal meters per pack

S = Packaging size in milliliters
W = Sealant profile width in millimeters
D = Sealant profile depth in millimeters

Guide to sealant quantities

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

Nitoseal MS100 must not be used as follows:

• Where adhesion is required to polyethylene, polypropylene, polybutylene, polycarbonate and bitumen.
• Where it is subjected to permanent immersion in water.
• With structural glazing or floor joints.
• With pipes or in other applications where it may be subjected to hydrostatic or pneumatic pressures (other than wind pressure).
• Where continual exposure to aggressive solvents or chemicals will occur.
• Where timber or wood based products have been painted.
• Nitoseal MS100 is a combustible material. Do not seal around chimney or flues.
• Do not overpaint with oil based alkyd paint systems.
• Should not be considered a substitute for a good standard of joint preparation.
• Joint arrises should be primed where movement in excess of 25% is expected.

1. Nitoseal MS100
2. Expandafoam Cord

ISO 11600 Type F 25LM

Performs as an acoustic sealant to:

• BS EN ISO 140-3:1995 Laboratory measurement of airborne sound insulation of building elements
• BS EN ISO 717-1:1997 Rating of sound insulation in buildings and of building elements. Airborne Sound Insulation.