Liquid Membrane-Forming Curing Compound Sbc: Type 1 Concrete-Curing Compound (Astm 309) Sbw: Type 2 Concrete-Curing Compound (Astm 309). 

dura.cure SBC and dura.cure SBW meet the requirements of ASTM C309 specification for liquid membrane forming compounds for curing concrete.

Applies easily and quickly by spray, brush or roller for efficient curing of concrete.

If it is intended to use these materials on architectural concrete or concrete where adhesives will be used to affix tiles, it is recommended that trials be conducted to ensure that the degree of staining is not excessive or that the curing compound and tile adhesive are compatible.


Facilitates more complete hydration of cement and thereby increases the strength of concrete, increases wear-resistance and curbs dusting.


SBC – clear
SBW – white

Surface Preparation

Apply immediately after the exposed surface has sufficiently hardened to prevent marring by the application. This is especially important in warm or hot temperatures. In the case of formed surfaces, apply as soon as forms are stripped. If any part of the surface has dried out, it should be wetted down immediately preceding the application of dura.cure SBC or dura.cure SBW., but do not apply while free water remains on the surface. Surface should be saturated but free of surface water, quick drying occurs in areas on concrete exposed to draughts, excessive heat and sun.

Properties of Wet Material
Density (typical) SBC 0.90 – 0,92kg/liter
SBW 1,15 – 1,17kg/litre
Color SBC – clear
SBW – white
Flash point 47º C (abel)
Dilution Do not dilute
Toxicity Moderate – use
in well-ventilated areas
Shelf life 2 years (SBW to be mixed prior to use)
Packaging 200L

Coverage depends upon texture and porosity of surface. Maximum recommended coverage for effective curing is 9 m2 per liter.


dura.cure SBC and particularly dura.cure SBW, must be thoroughly stirred prior to application. Apply uniformly and thinly by spray, brush or roller at a coverage no greater than 9 m2 per liter. Do not add thinners. Use a garden-type pressure sprayer or a wide short-nap roller to achieve thin, uniform application. This is important as uneven application results in amottled appearance as the floor ages. Initially, application has a temporary mirror-like sheen which visually helps the applier obtain uniform coverage of all areas and eliminates wasteful double application. Drying time is 1,5 hours. The treated surface is non tracking when dry.

Cleaning of Equipment

For cleaning or removing SBC or SBW from rollers or brushes, use a.b.e.® super brush cleaner.

Protection on Completion

Protect surface against traffic and spillage until cured.

Model Specification

The curing compound will be dura.cure SBC, a solvent based resin-curing compound or dura.cure SBW with a white reflective finish. The curing compound must conform to the requirements of the ASTM C309 for liquid membrane forming compounds and applied in accordance with a.b.e.® Construction Chemicals’ recommendations.


dura.cure SBW and dura.cure SBC are supplied in 25 liter and 200 litre yield metal containers.

Handling & Storage

All dura.cure related products have a shelf life of 12 months if kept in a dry, cool store in the original, unopened packs. If stored at high temperatures and/or high humidity conditions, the shelf life may be reduced.

Health & Safety

dura.cure SBC and dura.cure SBW are toxic and flammable. Ensure thorough ventilate in the working area during application and drying. Avoid flames in vicinity. Avoid inhalation of dust and contact  Avoid inhalation of dust and contact with skin and eyes. Suitable protective clothing, gloves, eye protection and respiratory protective equipment should be worn. The use of barrier creams provides additional skin protection. If contact with skin occurs, wash with water and soap. Splashes into eyes should be washed immediately with plenty of clean water and medical advice sought. Cured dura.cure SBC and dura.cure SBW are inert and harmless.

NB: When transporting liquids and semi-liquids by aircraft, ask for material safety data sheet.

Important Note

This data sheet is issued as a guide to the use of the product(s) concerned. Whilst a.b.e.® Construction Chemicals endeavours to ensure that any advice, recommendation, specification or information is accurate and correct, the company cannot – because a.b.e.® has no direct or continuous control over where and how a.b.e.® products are applied – accept any liability either directly or indirectly arising from the use of a.b.e.® products, whether or not in accordance with any advice, specification, recommendation or information given by the company.

Further Information

Where other products are to be used in conjunction with this material, the relevant technical data sheets should be consulted to determine total requirements.