SIKA · AUTHORIZED PROJECT DISTRIBUTOR · SPACE ARC ENGINEERING
Sikalastic®-11 Primer W
Two-component, water-based epoxy primer for Sikalastic liquid-applied roof membranes
Product Overview
Sikalastic®-11 Primer W is a two-component, water-based epoxy primer engineered to prepare a wide range of roof and structural substrates before the application of Sika’s liquid-applied waterproofing membranes. Its low viscosity allows deep penetration into porous backgrounds, binding loose particles and creating a sound, dust-free bonding bridge that improves adhesion of the subsequent membrane. The primer is equally effective on concrete, cement screeds, brickwork and epoxy mortar, and can be used on metal and bitumen surfaces when combined with a sand broadcast. Being water-based, it carries low VOC and is easy to mix and roll on site. Specified by contractors, applicators and consultants across India, it is supplied by Space Arc Engineering, an authorized Sika project distributor, for waterproofing and roof-refurbishment projects nationwide.
Features & Benefits
- Low viscosity drives deep penetration into porous concrete, screeds and brickwork for a strong bonding key
- Water-based, low-VOC chemistry keeps site odour and handling concerns to a minimum
- Versatile across concrete, cementitious, metal, wood and bitumen substrates with sand broadcast
- Stabilizes and consolidates weak, dusty or absorbent backgrounds before membrane application
- Short overcoating window of roughly 2 to 4 hours keeps the waterproofing programme moving
- Simple 1:4 by-weight mixing and easy roller or brush application reduce applicator error
Technical Highlights
| Coverage | Theoretical consumption is approximately 0.15 to 0.25 kg/m², excluding allowances for porosity, surface profile and wastage. |
| Strength | Promotes adhesion and consolidates substrates; specific bond figures vary with background condition — refer to TDS. |
| Performance | Curing system delivers good penetration with an overcoating waiting time of about 2 to 4 hours; pot life is around 25 minutes for a 100 g mass at +25°C. |
| Application Conditions | Apply between +5°C and +30°C (air and substrate), at relative humidity up to 85%, substrate moisture below 6% and at least +3°C above dew point. |
| Packaging | Pre-batched 5 kg set (Part A 1 kg + Part B 4 kg). |
Applications
- Priming concrete decks and screeds on commercial roof waterproofing projects
- Stabilizing aged, porous brickwork and asbestos roof sheets before liquid membranes in industrial refurbishment
- Metal roof and gutter substrates treated with a sand broadcast on warehouse and factory roofs
- Bitumen-felt surfaces being overlaid with Sikalastic membranes on residential terrace renovations
- Sealing absorbent cement substrates ahead of waterproofing in infrastructure and utility buildings
SPACE ARC ENGINEERING · AUTHORIZED DISTRIBUTOR
Product image & sample available on request
Technical Data
| Type | Two-component water-based epoxy primer |
| Base | Water-based epoxy resin |
| Mixing ratio | Part A : Part B = 1:4 by weight |
| Consumption | Approx. 0.15–0.25 kg/m² |
| Pack size | 5 kg pre-batched set |
| Colour / Density | White liquid; approx. 1.2 kg/L mixed |
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 is Sikalastic-11 Primer W used for?
It is a two-component water-based epoxy primer used to seal, stabilize and improve adhesion on substrates such as concrete, screeds, brickwork, metal and bitumen before applying Sikalastic liquid-applied waterproofing membranes.
What is the coverage of Sikalastic-11 Primer W?
Theoretical consumption is approximately 0.15 to 0.25 kg/m². Actual usage rises on porous or rough substrates, so add allowance for absorption, surface profile and wastage. For project-specific figures refer to the TDS.
How is Sikalastic-11 Primer W mixed and applied?
Combine Part A and Part B at a 1:4 ratio by weight and mix thoroughly. Apply by brush or roller within the pot life of around 25 minutes at +25°C, then overcoat after roughly 2 to 4 hours.
On which substrates can the primer be used?
It suits concrete, cement screeds and epoxy mortar directly, and metal, wood and bitumen substrates when used with a sand broadcast. Substrate moisture should be below 6% and at least +3°C above dew point.
Who supplies Sikalastic-11 Primer W in India?
Space Arc Engineering is an authorized Sika distributor supplying Sikalastic-11 Primer W across India. Contact +91 9999155255 or info@space-arc.com for pricing, availability and technical support.
Related Products
- Sikalastic®-10 Primer EP — Solvent-free epoxy primer alternative for Sikalastic systems
- Sikalastic®-450 (I) — Polyurethane membrane commonly applied over this primer
- Sikalastic®-590 IN — Liquid-applied membrane requiring primed substrates
- Sikalastic®-610 R IN — Pure-PU membrane that benefits from epoxy priming
Buy Sikalastic®-11 Primer W — 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