Sikaflex®-140 Construction | Joint Sealant for Building Joints (600ml)
Brand : Sika
Product Type : Joint sealant for building joints
Size : 600ml
Packaging : 20 foil packs per box
Composition : i-Cure® Technology polyurethane
Density : ~1.45 kg/L
Product Description:
Sikaflex-140 Construction is a moisture-curing, elastic joint sealant.
Usage:
Sealing joints for :
- Movement and connection joints
- Horizontal and vertical movement and connections
- Facade elements
The product can be used on various substrates. Refer to 'Substrate Preparation' section for compatible substrates. Please note:
- The Product may be used for interior and exterior applications.
Features / Advantages:
- Movement capability of ± 25 % (ASTM C 719)
- Bubble-free curing
- Good workability
- Good adhesion to many substrates
Shelf Life:
12 months from date of production
Storage Conditions:
The product must be stored in original, unopened and undamaged packaging in dry conditions at temperatures between +5 °C and +25 °C. Always refer to packaging.
Technical Information:
Shore A Hardness : ~36 (after 28 days)
Secant Tensile Modulus : ~0.30 N/mm² at 60 % elongation (+23 °C)
Movement Capability : ± 25 %
Elastic Recovery : ~70 %
Tear Propagation Resistance : ~6.0 N/mm
Service Temperature : −40 °C min. / +70 °C max.
Application Guide:
- Sag Flow : ~2mm (20mm profile, +50 °C)
- Substrate Temperature : Max:+40 °C, Min+5 °C
- Backing Material : Use closed cell, polyethylene foam backing rod.
- Curing Rate : ~2 mm / 24 hours (+23 °C / 50 % r.h.)
- Skin Time : ~120 minutes (+23 °C / 50 % r.h.)
- Tooling Time : ~100 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 that is 2-3 days old, or with a matt-wet (surface dry), must be primed using Sika Primer-3 N applied by brush. Concrete, aerated concrete, cement-based renders, mortars and brick:
- Apply Sika Primer-3N or Sika Primer-115 by brush
Cleaning of Tools
Clean all tools and application equipment with Sika® Remover-208 immediately after use. Hardened material can only be removed mechanically.
