Sikaflex®-140 Construction
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$8.98
Sale price
$8.98
Regular price
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Sikaflex®-140 Construction
$8.98
Sale price
$8.98
Regular price
Sikaflex®-140 Construction
A 1-part polyurethane elastic joint sealant for durably sealing connection and movement joints in concrete and masonry facades. Bubble-free curing, ±25% movement capability, and excellent adhesion to most construction materials. LEED® v4 compliant.
Overview
Specifications
| Property | Value |
|---|---|
| Type | 1-component polyurethane elastic joint sealant |
| Density | (1.25 ± 0.1) kg/L (ISO 1183-1) |
| Shore A Hardness | 35 (cured 28 days at +23°C / 50% R.H.) |
| Secant Tensile Modulus | 0.30 N/mm² at 60% elongation (cured 28 days) |
| Elastic Recovery | 70% at 100% elongation for 24 hours |
| Tear Propagation Resistance | 6.0 N/mm (cured 7 days) |
| Elongation at Break | 800% at −20°C (cured 7 days) |
| Movement Capability | ±25% (ASTM C719) |
| Service Temperature | −40°C min / +70°C max |
| Skin Time | ~120 minutes at +23°C / 50% R.H. |
| Tooling Time | ~100 minutes at +23°C / 50% R.H. |
| Curing Rate | ~2 mm / 24 hours at +23°C / 50% R.H. |
| Shelf Life | 12 months from date of production |
| Storage | Dry, +5°C to +30°C, original sealed packaging |
Usage
- Interior and exterior joint sealing on building facades
- Around window and door frames
- Around precast and prefabricated elements
- Floor and wall construction joints
- General purpose construction sealant
Advantages
- Easy to extrude and tool
- Movement capability of ±25% (ASTM C719)
- Good adhesion to many construction materials
- Bubble-free curing
- Can be overpainted with most conventional paint systems
- LEED® v4 compliant – contributes to Indoor Environmental Quality (EQ) Credit: Low-Emitting Materials
Packaging
- 600 ml foil pack
- Box of 20 foil packs
Colour
- Grey
- White
Product Details
Product Information
| Property | Detail |
|---|---|
| Composition | Sika i-Cure® polyurethane (1-component) |
| Product Declaration | ASTM C920-18: Type S, Grade NS, Class 25, Use T1, NT, M |
| Shelf Life | 12 months from date of production |
| Storage Conditions | Dry, +5°C to +30°C, original sealed packaging |
| Density | (1.25 ± 0.1) kg/L (ISO 1183-1) |
Technical Information
| Property | Value | Standard / Condition |
|---|---|---|
| Shore A Hardness | 35 | Cured 28 days, +23°C / 50% R.H. |
| Secant Tensile Modulus | 0.30 N/mm² | 60% elongation, cured 28 days |
| Elastic Recovery | 70% | 100% elongation for 24 hours |
| Tear Propagation Resistance | 6.0 N/mm | Cured 7 days |
| Elongation at Break | 800% | At −20°C, cured 7 days |
| Movement Capability | ±25% | ASTM C719 |
| Sag Flow | 2 mm | 20 mm profile at +50°C |
| Curing Rate | ~2 mm / 24 hours | +23°C / 50% R.H. |
Joint Design
- Movement joints: min. 8 mm wide, max. 40 mm wide
- Non-movement joints: can be less than 8 mm wide
- Minimum depth: 8 mm, or width:depth ratio of 1:0.5 (facade) / 1:0.8 (floor), whichever is greater
- Use closed-cell polyethylene foam backing rod
Application
Application Information
| Parameter | Value |
|---|---|
| Ambient Temperature | +5°C min / +40°C max |
| Substrate Temperature | +5°C min / +40°C max (min. 3°C above dew point) |
| Product Temperature | +5°C min / +40°C max |
| Skin Time | ~120 minutes at +23°C / 50% R.H. |
| Tooling Time | ~100 minutes at +23°C / 50% R.H. |
| Curing Rate | ~2 mm / 24 hours at +23°C / 50% R.H. |
Application Steps
- Substrate Preparation: Surface must be sound, clean, dry, and free from dirt, oil, grease, cement laitance, sealant residues, and poorly bonded coatings. Use wire brushing, grinding, or grit blasting to remove weak material. Repair damaged joint edges with suitable Sika repair products.
- Priming – Non-Porous Substrates: Aluminium, stainless steel, galvanised steel, glazed tiles: lightly abrade, clean, then apply Sika® Aktivator-205 with a clean cloth. Other metals (copper, brass, titanium-zinc): abrade, clean, apply Sika® Aktivator-205, wait flash-off time, then prime with Sika® Primer-3 N. PVC: prime with Sika® Primer-215.
- Priming – Porous Substrates: Concrete, aerated concrete, cement renders, bricks: prime with Sika® Primer-3 N or Sika® Primer-115. Concrete 2–3 days old or matt wet: use Sika® Primer-115.
- Application: Apply masking tape if required. Insert backing rod to required depth. Prime joint surfaces. Open foil pack, fit nozzle, cut to desired bead size, and insert into application gun. Apply sealant into joint avoiding air entrapment. Tool firmly against joint sides immediately using Sika® Tooling Agent N. Remove masking tape within skin formation time.
- Overpainting: Allow full cure before overpainting. Test paint compatibility per ISO/TR 20436:2017 before full application.
- Do NOT use on: Natural stone (granite, marble, limestone), bitumen, natural rubber, EPDM rubber, or joints in swimming pools with chlorine treatment.