Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Product Type
- Technologies
- Product Families
Features & Benefits
- Ready-to-Use Product Features
- Advantages
- Adhesion to most common building materials.
- Single component with fast rate of cure.
- Easy to apply.
- UV resistant.
- Primerless for most applications.
- ISO11600:2002 Type F 25LM compliant.
Applications & Uses
- Markets
- Uses
Nitoseal PU40 is suitable for sealing joints in concrete, brickwork, blockwork, precast panels, stone cladding, perimeter sealing around doors and windows, and non-trafficked floor joints.
- Application Instructions
Preparation- Joint surfaces must be clean, dry and free from frost. Remove 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. 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, Backing rod or Expandafoam. 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 - A primer is not normally required. In joints subjected to high ovement or where intermittently immersed during service, Berger Fosroc Primer 7 (porous substrates, drying time 30 minutes) or Berger Fosroc Primer 4 (non-porous substrates, drying time 2-5 minutes) is recommended. Prime the joint face using a clean, dry brush. Avoid over application of primer, to prevent causing puddles in the bottom of the joint. If a primed joint on porous substrate is left unsealed for more than 4 hours, the primer should be removed by grit blasting or grinding and the joint re-primed; on non-porous substrate, joint should be re-primed. (For further advice on priming required please contact your local Berger Fosroc Technical Service Department).
Application and Finishing
- Sachets - Cut and remove the end of the sachet and place sachet in the Berger Fosroc GX gun. Fit the nozzle and cut at 45 degrees to a suitable size for sealing the joint.
- Cartridges - Cut and remove the end of threaded stub on cartridge. Fit the nozzle and cut at 45 degrees to a suitable size for sealing the joint.Berger Fosroc Primer 4 is highly flammable. See Product Safety Data Sheet for details. Berger Fosroc Equipment Cleaner and Berger Fosroc Solvent 102 are flammable. Refer to appropriate Product Safety Data Sheet.
- Cleaning - Clean tools immediately after use with Berger Fosroc Equipment Cleaner or Berger Fosroc Solvent 102.
- Priming
A primer is not normally required. In joints subjected to high ovement or where intermittently immersed during service, Berger Fosroc Primer 7 (porous substrates, drying time 30 minutes) or Berger Fosroc Primer 4 (non-porous substrates, drying time 2-5 minutes) is recommended. Prime the joint face using a clean, dry brush. Avoid over application of primer, to prevent causing puddles in the bottom of the joint. If a primed joint on porous substrate is left unsealed for more than 4 hours, the primer should be removed by grit blasting or grinding and the joint re-primed; on non-porous substrate, joint should be re-primed.
- Estimating
Supply
Nitoseal PU40 600 ml sachets Primer 4 125 ml Primer 7E 0.5 liter Nitoflor Sol 5 & 20 liter can Guide to Quantities
Joint size in mm Liter per meter run Meter run per 600ml sachet 10 x 6 0.06 10 12 x 10 0.12 5 20 x 10 0.2 3 25 x 12 0.3 2 30 x 15 0.45 1.33 - Limitations
Not recommended for the following,
- Unprimed joints that will be subjected to continuous water immersion.
- Joints that are contaminated with grease, wax, corrosion, bitumen or cement laitance.
- Horizontal joints in floors or decks where traffic or abuse is encountered.
- Special architectural fi nishes without proper testing.
- Application Limitations
- Nitoseal PU40 must not be applied to frost-bearing surfaces if temperature will be below freezing for more than 24 hours.
- Tooling techniques using solvents or soapy solutions are not recommended.
- All surfaces must be evaluated for adhesion prior to product acceptance.
Properties
- Physical Form
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Application Temperature | 5 - 50 | °C | - |
| Cure Rate (24 hours, 20°C, 50% RH) | 3.0 | mm | - |
| Hardness (20°C) | 25.0 | Shore A | - |
| Movement Accommodation Factor | 25.0 | % | - |
| Service Temperature | -40 - 70 | °C | - |
| Skinning Time (20°C, 50% RH) | 2.0 | hours | - |
| UV Resistance | Very Good | - | - |
Regulatory & Compliance
- Certifications & Compliance
- Standard Compliance
- ISO11600:2002 Type F 25LM
- ASTM C920-95 Type S, Grade NS, Class 25
- US Fed Spec TT-S-00230a Type II, Grade NS, Class 25
Safety & Health
- Precautions
Health & Safety
Nitoseal PU40 may be harmful if swallowed or inhaled and may cause skin and eye irritation. Product contains a very small amount of isocyanates and low flash point solvent. Should accidental skin contact occur, remove contaminated clothing and wash with warm soapy water. Do not scrub. If inhaled remove person to fresh air. Get medical advice if breathing becomes difficult. In case of contact with eyes, rinse immediately wih plenty of clean water for at least 15 minutes and seek medical advice. If swallowed, give a glass of water to dilute and seek medical attention immediately - do not induce vomitting. For further information, refer to the appropriate Product Material Safety Data Sheet.
Fire
Nitoseal PU40 does not readily support flame. Primer4, Primer 7E and Nitoflor Sol is highly flammable liquid. Keep away from sources of ignition. No smoking. Containers should be tightly sealed when not in use. In the event of fire, extinguish with CO2 or foam. Do not use water jet.
Packaging & Availability
- Packaging Type
- Colors
Available in a range of colors.
Storage & Handling
- Storage
12 months if stored in the original unopened sachets in a cool dry place. Do not store in direct sunlight.
- Disposal
Dispose according to local authority regulations. Do not dispose down drains or into local waterways.