For production of A-Grade off-form concrete finishes.
To prevent adhesion of concrete to forms and concrete handling equipment.
To reduce surface adhesion of concrete forms, and to produce high quality off-form concrete
To reduce formation of ‘bug holes’ in off-form concrete.
PRODUCT TO USE:CALFORM NX
HOW TO SPECIFY:
CALFORM NX to be sprayed or brush applied to all contact surfaces of formwork at the rate of 13 to 20 square metres per litre, depending on timber or metal formwork. Use sparingly and ensure no excess or pooling.
EFFECTS:CALFORM NX reacts with the alkali present in the cement to form a microscopic water repellent film between concrete and formwork, to produce a high quality finish on stripping. By this action, formwork is protected against continuous wetting and drying action and cement sticking to the treated form surface.
LIFE OF CALFORM NX ON FORMS:Where forms have only occasional use, they should be coated with CALFORM NX prior to stacking in yard. However, before using again, a further coating of CALFORM NX should be applied: CALFORM NX applied to forms in excess of one week, would not perform as expected due to evaporation of the more volatile petroleum components of the material.
WHERE RECOMMENDED:For all A Grade off-form concrete finishes.
On all formwork, kibbles, wheelbarrows, scaffolding, shovels and tools of trade in contact with cement or concrete.
CAUTION:Use sparingly and avoid excess or “pooling”.
Where rough or sawn timber are used as re-usable formwork, Cementaid CALFORM CREAM should first be applied to all form surfaces, to protect against curling / deformation of forms and resist staining from leaching of natural timber resins.
When CALFORM NX is used and CALCURE B is to be used, take care to clean down concrete surface removing all traces of very fine powder residue prior to the application of CALCURE B. This powder normally weathers away in a few days but may be trapped by early application of curing compound. The powder itself is fully compatible with renders and paints.
NOTE:CALFORM NX may be used on Aluminium or steel frames to protect against splashes of concrete or mortar.