- They permit clean release of formwork from the hardened concrete during stripping.
- Protect the formwork for long life and extensive reuse
- Help produce a hard, nonpowdery, stain-free concrete surface with a minimum number of defects.
- Prevent corrosion of steel forms and consequent staining of the concrete surface.
Rye Oil Ltd’s Mould Oil MD4 was originally designed for wood forms. It is a straight refined, pale, paraffin-base mineral oil (an oil-phased emulsion). The oil is capable of penetrating the wood while leaving the surface only slightly greasy to the touch with no free oil on the form.
In the process of developing this product we have also found that it acts as a great agent for steel forms. Consequently to meet the requirements for steel forms we just add a rust inhibitor to stop the eventual water ingression. Plastic form liners can be used a few times without a release agent because of their hard, smooth finish but after a few uses the surfaces become so rough as to necessitate the use of MD4 release agent. Concrete forms, even if they are ground, smoothed and polished, require a release agent to prevent sticking and enable easy stripping