Sikaflex® PRO-3 | Polyurethane Sealant (600ml)
Brand : Sika
Product Type : Polyurethane sealant for floor joints and civil engineering applications
Size : 600ml
Packaging : 20 foil packs per box
Color : Concrete grey (Other colours available upon request)
Composition : Polyurethane i-Cure® Technology
Density : ~1.35 kg/L
Product Description:
Sikaflex® PRO-3 is a 1-part, polyurethane, tough, coloured, elastic joint sealant for sealing many types of joint configurations in floors and civil engineering structures. It provides a waterproof seal with good mechanical properties, is resistant to chemicals and remains elastic over a wide range of temperatures.
Usage:
Horizontal and vertical interior and exterior sealing joints applications:
- Food industry
- Cleanrooms
- Sewage treatment plants
- Tunnels
Sealing horizontal and vertical joints for:
- Floors
- Pedestrian and traffic areas
- Car park parking decks
- Warehouse and production floor areas
Features / Advantages:
- Movement capability ± 35 %
- Good mechanical and chemical resistance
- Bubble-free curing
- Over-paintable
- Good adhesion to defined construction materials
- Very low emissions
Shelf Life:
15 months from date of production
Storage Conditions:
The product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +25 °C. Always refer to packaging.
Technical Information:
- Shore A Hardness : ~37 (after 28 days)
- Secant Tensile Modulus : ~0.60 N/mm² at 100 % elongation (+23 °C)
- Elastic Recovery : ~90%
- Tear Propagation Resistance : ~8.0 N/mm
- Movement Capability : ± 25 %
- Service Temperature : −40 °C to +70 °C
Application Guide:
- Backing Material : Use closed cell, polyethylene foam backing rod
- Sag Flow : 0mm (20mm profile, +50 °C)
- Substrate Temperature : Max:+40 °C, Min+5 °C
- Curing Rate : ~3.5 mm/24 hours (+23 °C / 50 % r.h.)
- Skin Time : ~60 minutes (+23 °C / 50 % r.h.)
- Tooling Time : ~50 minutes (+23 °C / 50 % r.h.)
Application Steps:
Substrate Preparation
- Ensure substrate is clean, dry, sound and free from oils, grease, dust, cement laitance and loose or friable particles.
- Where joints in substrate are saw cut, ensure all slurry material, is flushed away and joint surfaces allowed to dry.
Non-porous substrates:
Aluminium, anodised aluminium, stainless steel, PVC, galvanised steel, powder coated metals or glazed tiles. Metals such as copper, brass and titanium-zinc (no need to roughen surface).
Non-porous substrates
Slightly roughen surface with a fine abrasive pad. Clean and pre-treat using Sika® Aktivator-205 applied with a clean cloth. Before sealing, allow waiting time of > 15 minutes (< 6 hours). For PVC, use Sika® Primer-215 and wait for > 30 minutes (< 8 hours).
Porous substrates :
Concrete, aerated concrete and cement-based renders, mortars and bricks surfaces must be primed using Sika® Primer-3 N or Sika® Primer-210 applied by brush. Before sealing, allow a waiting time of > 30 minutes (< 8 hours).
Adhesion tests on project specific substrates must be performed and procedures agreed with all parties before full project application.
Note :
Primers and activators are adhesion promoters, not an alternative to improve poor preparation / cleaning of the joint surface. Primers also improve the long-term adhesion performance of the sealed joint.
Cleaning of Tools
Clean all tools and application equipment with Sika Remover-208 immediately after use. Hardened material can only be removed mechanically. For cleaning skin, use Sika Cleaning Wipes-100.
