Concrete Curing Membrane
One simple thing to improve the quality of concrete is to use a spray applied curing membrane. . . it’s a pity that this techniques doesn’t seem to be used much in Australian domestic building.
Purpose of Membrane
These membranes main purpose is to prevent the loss of moisture during the Curing Period.
Some membranes can also help with surface hardening the concrete and help prevent dust.
Types of Membranes
When looking at types of membranes you will find
- Water based
- PVA based
- Chlorinated-rubber based
- Resin based.
In my opinion a water or PVA based membrane will be quite suitable for the typical house slab or driveway.
A further consideration is whether to use a clear membrane or a white pigmented material.
Unless I was using the compound on a coloured concrete, or an exposed aggregate finish, I would go for the white pigmented finish. It has the following advantages:
- The colour makes is easier to check the whole surface has been covered evenly.
- The white colour, which will fade during the curing period, will reflect more sun reducing the temperature of the concrete during the cure.
Always check that the membrane coating is compatible with anything that will be later applied to the concrete, such as flooring materials.
For further information you can check the following websites