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Submitted by webmaster on 16 مايو 2024

ڤيتوفليكس بي يو 788

سداد بولي يوريثان للفواصل العريضة

Vetoflex PU788 is one part, moisture curing, water resistant, low modulus elastomeric joint sealant based on polyurethane. It is suitable for movement and connection joints for indoor and outdoor applications. Vetoflex PU788 is a weather-resistant, paintable sealant when it’s fully cured, with versatile usage both as a sealant and a general adhesive in the construction industry for various substrates, including concrete, steel, wood, and many others.

الاستخدامات

  • Primerless sealing pre-cast panel joints and expansion joints.
  • As a general elastic adhesive for materials with dissimilar properties and thermal expansion coefficients.
  • Movement and static joint sealing in various construction industry requirements.

المزايا

  • Suitable for overhead, vertical and horizontal joints.
  • Weather-resistant, suitable for external & internal applications.
  • Easy application using a caulking gun.
  • Paintable with non-solvent or water-based paints after curing in static joints (i.e., around door perimeters).
  • No crack or craze under UV exposure.
  • Non-sag and non-staining.
  • It does not require a primer and exhibits tenacious adhesion to most building materials.
  • Excellent movement accommodation.

تعليمات الاستخدام

Standard design dimensions for concrete elements as per DIN 18 540 /table 3:

Joint Distance (m) 23468
Design Joint Width (mm)1520254050
Minimum Joint Width (mm)1217223545
Joint Depth810132025

Clean all joint surfaces and remove any dust, unsound material, plaster, oil, paint, grease, corrosion deposits, or algae. Roughen the surfaces, remove any laitance and expose aggregate by light scabbling or grit-blasting. Remove oil and grease deposits by steam cleaning, detergent scrubbing, or use a proprietary degreaser. Before positioning a bond breaker, check any expansion joint filler to ensure it is tightly packed with no gaps or voids at the base of the sealing slot. The use of a bond breaker is not required in expansion joints containing cellular polyethylene joint filler, backing rod (Vetoflex PBR). For construction or contraction joints, use a bond breaker tape or back-up strip.

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

The use of a primer is generally not required when using Vetoflex PU788. However, where it is hard to bond substrates such as PVC or where highly porous substrates are in question, please contact Saveto local office for assistance on suitable primer choice.

Cut and remove the end of the sachet and place the sachet in the Vetonit bulk gun. Fit the nozzle and cut at 45 degrees to 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

Remove Vetoflex PU788 from tools, equipment, and mixers with Vetonit Solvent XX400 immediately after use. Hardened material can only be removed mechanically.

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