SIKA · AUTHORIZED PROJECT DISTRIBUTOR · SPACE ARC ENGINEERING
Sikalastic®-450 (I)
Single-component, aliphatic polyurethane liquid-applied waterproofing for non-trafficked roofs
Product Overview
Sikalastic®-450 (I) is a single-component, aliphatic, elastomeric polyurethane coating that cures by reacting with atmospheric moisture to form a seamless, highly elastic waterproof membrane with strong crack-bridging behaviour. Supplied ready to use, it is rolled or brushed directly onto prepared substrates and bonds well to concrete, brickwork, asphalt and corrugated sheeting. The cured film accommodates structural movement and protects non-trafficked roofs, podiums, inverted-roof build-ups and retaining walls, but it is not intended for permanent water immersion such as tanks or pools. Its joint-free finish removes the weak overlaps associated with sheet systems. Space Arc Engineering, an authorized Sika distributor in India, supplies Sikalastic®-450 (I) to contractors and building owners for new-build waterproofing and roof-repair contracts.
Features & Benefits
- Seamless, fully bonded film eliminates the laps and seams that fail on sheet membranes
- Highly elastic with crack-bridging that passes the 3 mm mandrel test for moving substrates
- Single-component and ready to use, so no on-site mixing errors
- Aliphatic chemistry gives durable UV and weathering resistance for exposed roofs
- Adheres to diverse substrates including concrete, brick, asphalt and corrugated sheets
- Wide service range from -20°C to +80°C suits demanding Indian roof environments
Technical Highlights
| Coverage | Total consumption is around 1.7 kg/m² over two coats (base ~0.850 kg/m², top ~0.800 kg/m²), plus diluted primer at ~0.25 kg/m². |
| Strength | Tensile strength of approximately 3.0 N/mm² with reinforcement at 14 days (+27°C); passes 3 mm mandrel crack-bridging. |
| Performance | Solids content of at least 60% by weight; water vapour permeability around 25 g/m²/day; full cure in 7 to 10 days at +30°C with service from -20°C to +80°C. |
| Application Conditions | Apply between +10°C and +40°C (air and substrate), relative humidity up to 80%, substrate moisture not exceeding 6% by weight. |
| Packaging | 20 kg containers; black liquid; density 1.20 ± 0.05 kg/L. |
Applications
- Waterproofing non-trafficked RCC roofs on commercial and institutional buildings
- Protective coatings on infrastructure concrete structures and bridge elements
- Inverted-roof and podium-deck waterproofing on mixed-use developments
- Retaining-wall waterproofing applied before backfilling in basement and civil works
- Refurbishment overlay on aged asphalt or corrugated industrial roofs
SPACE ARC ENGINEERING · AUTHORIZED DISTRIBUTOR
Product image & sample available on request
Technical Data
| Type | Single-component aliphatic PU liquid membrane |
| Base | Moisture-curing polyurethane |
| Tensile strength | ~3.0 N/mm² (reinforced, 14 days) |
| Consumption | ~1.7 kg/m² over 2 coats |
| Pack size | 20 kg container |
| Colour | Black (liquid and cured) |
Datasheet & Documents
Request the Technical Data Sheet, method statement and safety data sheet from Space Arc Engineering.
Request Quote / Availability
+91 9999155255
+91 7290089007
info@space-arc.com
Frequently Asked Questions
What type of waterproofing is Sikalastic-450 (I)?
It is a single-component, aliphatic polyurethane liquid-applied membrane that cures with atmospheric moisture into a seamless, elastic, crack-bridging waterproof coating for non-trafficked roofs and concrete structures.
Can Sikalastic-450 (I) be used in water tanks or swimming pools?
No. It is designed for non-trafficked roofs, podiums, inverted roofs and retaining walls. It is not suitable for permanent water immersion such as tanks, pools or water-retaining structures.
How much Sikalastic-450 (I) do I need per square metre?
Plan for roughly 1.7 kg/m² over two coats, with a base coat near 0.850 kg/m² and a top coat near 0.800 kg/m², plus diluted primer at about 0.25 kg/m². Confirm against the TDS and substrate condition.
What are the application temperature limits?
Apply between +10°C and +40°C for both air and substrate, at a maximum relative humidity of 80% and substrate moisture not exceeding 6% by weight. Allow full cure of 7 to 10 days at +30°C before water exposure.
Who is the authorized distributor of Sikalastic-450 (I) in India?
Space Arc Engineering is an authorized Sika distributor for Sikalastic-450 (I) in India. Reach the team at +91 9999155255 or info@space-arc.com for quotations and application guidance.
Related Products
- Sikalastic®-11 Primer W — Water-based epoxy primer for substrate preparation
- Sikalastic®-590 IN — Alternative liquid-applied roof membrane
- Sikalastic®-610 R IN — Pure-PU membrane for higher-performance roofs
- Sikalastic®-510 CoolCoat IN — Cool-roof acrylic membrane for reflective finishes
Buy Sikalastic®-450 (I) — Sika Distributor in India
Space Arc Engineering is an Authorized Project Distributor supplying Sika products for infrastructure, industrial, commercial and residential projects across India.
+91 9999155255 | +91 7290089007 | info@space-arc.com