CASTECHREL UR

About

CASTECH Rel UR is a high-performance, oil-based form release agent specially formulated to provide clean, fast, and easy release of concrete from formwork. It consists of carefully selected mineral oils, corrosion inhibitors, and wetting agents that produce a smooth, stain-free concrete surface while extending the service life of formwork. CASTECH Rel UR is suitable for use in hot and tropical climates and is recommended for both precast and cast-in-place concrete applications.

Typical uses

 Steel formwork  Timber formwork  Plywood formwork  Plastic moulds and shutters  Precast concrete moulds  Concrete batching plant equipment  Ready-mix truck drums and chutes (to prevent concrete build-up)

Advantages

 Ready to use—no dilution required  Provides clean and easy stripping of formwork  Produces high-quality fair-faced concrete finishes  Reduces blowhole formation  Minimizes concrete adhesion to formwork  Protects steel formwork against corrosion  Extends the service life of formwork  Non-staining to concrete surfaces when applied correctly  Economical due to high coverage rate  Suitable for use under hot weather conditions

Application

CASTECH Rel UR is supplied ready for use.

Before application

 Ensure formwork is clean.  Remove dust, laitance, rust, old concrete residues, and

standing water. Apply one thin, uniform coat using

 Airless spray  Low-pressure spray  Roller  Brush Avoid excessive application or ponding. Remove surplus material using a clean cloth or sponge. For best performance, apply immediately after cleaning the formwork and allow the coating to remain undisturbed before concrete placement. Timber formwork performance improves after repeated applications due to gradual impregnation of the wood surface.  Do not mix with water or other solvents.

Health & Safety

Avoid prolonged skin contact.

Wear suitable

 Protective gloves  Safety goggles  Protective clothing Keep away from heat, sparks, and open flames. Refer to the latest Safety Data Sheet (SDS) before use.

Packaging

 20 L Pail  200 L Drum  1000 L IBC (Available upon request)

Storage & shelf life

12 months from the date of manufacture when stored in July-2026, Ver. 02.01 unopened original containers. Store in a dry, well-ventilated area between +5°C and +45°C.

Protect from

 Direct sunlight  Heat sources  Frost Keep containers tightly closed when not in use.

Important Notes

 Do not over-apply.  Excess material may cause staining or surface discoloration.  Protect treated formwork from rain before concrete placement.  Always conduct a site trial before large-scale