Polyurethane Sealant Nitoseal PU50

Single-Component, Polyurethane Hybrid Sealant.

Description

Polyurethane Sealant Nitoseal PU50 is a single-component, non-sag, medium modulus, moisture-cure, polyurethane hybrid joint sealant. It is formulated with a unique silage-terminated polyurethane polymer, that provides unequaled performance against standalone polyurethane sealants.Polyurethane Sealant Nitoseal PU50 is an extremely durable sealant in dynamic joints, offering persistent adhesion once fully cured. Polyurethane Sealant Nitoseal PU50 may be applied to joints between 5 and 50mm wide. To minimize stress imposed on the joint sealant, all moving joints should be designed to an optimum width to depth ratio of 2:1 with an overriding minimum depth of 5mm for non-porous surfaces and 10mm for porous surfaces.For joint widths exceeding 50mm, please contact Fortimix BD Consturction Technical Service Department.

Uses:

Polyurethane Sealant Nitoseal PU50 is suitable for sealing expansion & control joints in concrete, brickwork, blockwork, precast panels, stone cladding, perimeter sealing around doors and windows, trafficked floor joints. damp surfaces.

Advantages:

• • Adhesion to most common building materials
  • Single component with fast rate of cure
  • Damp surface tolerant
  • Non shrink
  • Non staining
  • High movement accommodation, MAF up to 50%
  • Easy to apply
  • UV resistant
  • Primerless for most applications (see “Priming”)

Application instructions: Polyurethane  Joint Sealant

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 arras 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.

Application and finishing:

Sachets

Cut and remove the end of the sachet and place sachet in the Fosroc GX gun.
Fit the nozzle and cut at 45 degrees to a suitable size for sealing the joint.

Cleaning

Clean tools immediately after use with Fosroc Equipment Cleaner or Fosroc Solvent 102.

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 finishes without proper testing due to large number of coatings available, it is advisable to carry out compatibility test before application of paint.

Application limitations:

• • Polyurethane Sealant Nitoseal PU50 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.

Storage:

Shelf life

12 months if stored in the original unopened sachets in a cool dry place. Do not store in direct sunlight. Store in a dry and cool place with temperature + 350C

Precautions

Health and safety

Polyurethane Sealant Nitoseal PU50 may be harmful if swallowed or inhaled and may cause skin and eye irritation. 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 with 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 vomiting’s. For further information, refer to the appropriate Product Material Safety Data Sheet.

Supply:

Nitoseal PU50:               600 ml sachets