Sika Separol WB-23
Water-Based Concrete Form Release Agent for Steel, Timber, and Plywood Formwork
Authorized Project Distributor — Sika India | Space Arc Engineering, Ghaziabad
Product Overview
Sika Separol WB-23 is a water-based, wax-emulsion concrete mould release and formwork treatment agent designed for application to steel, timber, plywood, and GRP formwork and precast concrete molds before concrete casting. It creates a thin, uniform release film on the formwork surface that prevents the concrete from chemically or physically bonding to the form face during casting and curing, allowing the formwork to be stripped cleanly and without damage after the concrete has gained sufficient strength. The water-based formulation of Sika Separol WB-23 provides significant advantages over traditional oil-based form release agents (such as mineral oil or diesel) commonly used on Indian construction sites: it produces a much cleaner release with minimal risk of concrete surface staining or discolouration, which is important for architectural or fair-faced concrete where visual surface quality is a specification requirement. Water-based formulation also means reduced fire risk during storage and application compared to solvent or oil-based release agents — an important safety consideration on busy urban construction sites in Delhi NCR where fire hazard management is regulated. Sika Separol WB-23 is applied by brush, roller, or hand spray to the clean formwork face in a thin, uniform coat and allowed to dry before concrete is cast. It is compatible with all standard concrete mixes and does not retard concrete setting or inhibit the bond between the fresh concrete and subsequent applied finishes, waterproofing treatments, or coatings. Space Arc Engineering supplies Sika Separol WB-23 for precast concrete manufacturers, building construction sites, bridge contractors, and formwork companies throughout Delhi NCR, Ghaziabad, and Uttar Pradesh.
Applications
- Steel formwork and re-usable panel forms — structural concrete columns, walls, and beams
- Plywood and timber formwork — slab and beam soffits in building construction
- Precast concrete molds — walls, columns, cladding panels, stairs, and other precast elements
- GRP (fibreglass) and plastic formwork molds — architectural and decorative concrete elements
- Tunnel lining formwork — in-situ concrete lining of road and rail tunnels
- Concrete paving formwork — road and pavement edge and joint formwork
Key Advantages
- Water-based — low fire risk, reduced environmental impact versus oil or solvent-based release agents
- Clean release with minimal concrete surface staining — suitable for fair-faced and architectural concrete
- Does not inhibit subsequent concrete surface treatments — bonding agents, coatings, or waterproofing
- Thin uniform film — does not build up on formwork after repeated use like thick oil agents
- Brush, roller, or spray application — fast coverage on large formwork areas
- Compatible with all standard concrete admixture systems
Technical Data
| Type | Water-based wax-emulsion form release agent |
| Form | Milky-white liquid emulsion — dilute as per Sika TDS for application |
| Application | Brush, roller, or low-pressure hand spray on clean formwork face |
| Coverage | Approximately 20 to 40 m2 per litre (depending on dilution and formwork porosity) |
| Drying Time | Allow to dry before casting — typically 30 to 60 minutes at 25 degrees C |
| Compatibility | Steel, timber, plywood, GRP formwork — all standard formwork types |
Get a Quote
+91 9999155255 | info@space-arc.com | Space Arc Engineering, Sahibabad, Ghaziabad
Frequently Asked Questions
How should Sika Separol WB-23 be applied to plywood formwork and how many uses can a treated plywood form give before re-application is needed?
For plywood formwork, Sika Separol WB-23 should be applied as follows. New or first-use plywood: new plywood is highly absorbent and requires a sealing treatment before Sika Separol WB-23 for best results. Apply a generous first coat of Sika Separol WB-23 at full concentration (undiluted) or per the Sika recommended dilution on the TDS, using a brush or short-nap roller. Allow the first coat to dry completely — the milky emulsion will turn translucent or clear as it dries, indicating the wax component has formed a film over the plywood surface. Apply a second coat at the same concentration and allow to dry. The double first treatment seals the plywood surface and reduces the absorption of subsequent application coats. First concrete cast: clean concrete release and a good surface finish should be achieved with the double first treatment. After each subsequent concrete cast: inspect the plywood face for concrete residue after stripping. Remove any concrete adhering to the form face with a plastic scraper (do not use steel scrapers on plywood) and clean with water. Allow the plywood to dry, then re-apply Sika Separol WB-23 as a single brush or roller coat before the next concrete pour. With correct use and Sika Separol WB-23 treatment, a plywood form can typically give 6 to 15 uses before the plywood face degrades and the form must be replaced. Plywood with a phenol-faced or overlaid face (such as Finnish birch ply or Wisa form ply) lasts longer than standard uncoated structural plywood. Always apply Sika Separol WB-23 from the edge inward on plywood to ensure the edges are sealed and do not absorb water from the fresh concrete, which causes edge swelling and formwork misalignment.
Source Sika Separol WB-23 for Your Project
Space Arc Engineering is an Authorized Project Distributor for Sika India serving Delhi NCR, Ghaziabad, Noida and Uttar Pradesh.