Sikalastic®-450 (I)
Aliphatic, elastomeric, polyurethane based liquid applied waterproofing coating
Sikalastic®-450 (I) is a single component, elastomeric, aliphatic polyurethane based liquid applied waterproof coating system. It cures to form an highly elastic, seamless, waterproof coating with excellent crack bridging properties.
- Excellent crack bridging properties
- Elastomeric membrane that cures with aerial moisture to a flexible and rubbery coating
- Single component, ready to use
Usage
- Seamless, impervious coating for application on roofs and concrete structures
- Protective coating in infrastructure projects in civil engineering on non-trafficked areas
- Used to waterproof variety of substrates concrete, brickwork, asphalt, corrugated asbestos sheets,etc
- Used for inverted roof structures
- Used for podium waterproofing as a part of built up system
- Can be applied on retaining walls before backfill
Packaging
20 kg container
Advantages
- Excellent crack bridging properties
- Elastomeric membrane that cures with aerial moisture to a flexible and rubbery coating
- Single component, ready to use
- Easy application by brush, airless spray or roller
- Economical
- Root resistant as a part of built up system
- Abrasion resistant
- Hydrolysis resistant
- Resistant to mild acid and chemicals and industrial environment.
- Weathering and UV resistant
- Low VOC and Eco-friendly
Colour
Black Liquid
Product Details
Chemical Base
Aliphatic polyurethane modified bituminous emulsion
Shelf Life
12 months from the date of production
Storage Conditions
Store in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5°C and +30°C.
Density
1.20±0.05 kg/liter
Solid content by weight
≥ 60%
System Structure
Standard Coating System
System Build-Up | Product |
Primer | Sikalastic®-450 (I) diluted with water 1:1 by weight |
Base Coat | Sikalastic®-450 (I) |
| Top Coat | Sikalastic®-450 (I) |
Reinforced Coating System
System Build-Up | Product |
Primer | Sikalastic®-450 (I) diluted with water 1:1 by weight |
Base Coat | Sikalastic®-450 (I) |
| Fabric reinforcement | Sika® Fab-1 |
| Top Coat | Sikalastic®-450 (I) |
Tensile Strength
≥ 3.0 N/mm2 | (ASTM D 412) |
After 14 days at +27°C with Sika® Fab1
Crack Bridging Ability
Passes 3 mm Mandrel | (IS 101) |
Permeability to Water Vapour
~25 g/m2/day | (IS 101) |
Water Absorption
Negligible
Thermal Resistance
˃ 120°C (Softening Point) | (ASTM D36) |
Behaviour after Artificial Weathering
No cracking and no blistering (500 hours) | (IS 101) |
Service Temperature
-20°C to +80°C
Dry film thickness
1.0 mm | Standard Coating System |
1.2 mm | Reinforced Coating System |
Application
Ambient Air Temperature
+10°C min. / +40°C max.
Relative Air Humidity
80% max
Substrate Temperature
+10°C min. / +40°C max.
Dew Point
Beware of condensation! The substrate and uncured membrane must be at least 3°C above the dew point to reduce the risk of condensation.
Substrate Moisture Content
< 6%
Pot Life
~ 3 hours at 30°C
Waiting Time / Overcoating
Primer to Base coat | 2-4 hours |
Base coat to Sika® Fab-1 | Immediately in wet Base coat |
Top coat to Base coat | 24 hours |
| Top coat to Protection screed | 7-10 days |
Tack Free Time
~12-20 hours at 20°C and 50% Relative Humidity
Drying Time
Full Cure requires about 7 days at 30°C
Recommended Dosage
100g for 50kg bag of cement (0.2% by weight of cement)