DEEP BARRIER is a non-membrane forming moisture barrier compound that works in the concrete slab and not on the concrete surface.
At the time of pour, a cubic metre of concrete typically has 190-195 litres of water. Over the next 28 days during the process of hydration some 120 litres leaves the concrete. As the water tracks out it leaves porosity or capillaries through the thickness of the concrete where any moisture present can move in or out.
A common myth is that concrete is dry as soon as it can be walked on.
In fact to conform to the Australian standard (AS 1884-2012), concrete must have a reading of no greater than 75% relative humidity and a moisture content of less than 5.5%.
In normal conditions an average slab of 100mm thick can take 4-5 months of drying time before it will conform to that standard. This is approx 20-25mm thickness of concrete per month
And even when the concrete conforms to the Australian Standard, if there is water present the concrete will still act like a sponge and continue to absorb water, causing the same problems.
85% of flooring failures are due to the presence of moisture in concrete from hydro-static pressure or green concrete.
The majority of floors are never tested for moisture levels. With the correct equipment it is a very simple and easy test to do. Not testing
Once a floor has been installed any moisture present will be drawn to the surface. If there is no way of escape for the moisture it will react with any adhesives or coatings on the surface of the concrete.
Waiting for the concrete to dry is not an option. This means you will have to use a waterproofing agent so you can get on with the job and to prevent any potential moisture problems.
The two main methods are either a membrane on the top surface of the slab (the traditional method) or to use an internal penetrating barrier.
DEEP BARRIER ‘ticks’ all the boxes for being a fast, cost effective solution when you need a moisture barrier for concrete.
Stiff bristle broom
Knapsack / back pack sprayer
|Typical use areas:||Key Features|
|Vehicle Type : Water based
Viscosity : 2.4
Specific Gravity : 1.1
Drying time : 30 minutes @ 25ºC.
Finish : No change to substrate
Colour : Blue tint – dries clear
Theoretical Coverage : 4.0 – 4.5m²/litre
Freezing point : -20C
Boiling Point : 1000C
Abrasion Resistance : Excellent
Bacterial Resistance : Excellent.
Chemical Resistance : Excellent
Heat Resistance : Up to 1200C (dry heat)
Solvent Resistance : Good
Salt Spray Resistance : Good.
Thinning and cleaning : Water
Durability : Excellent
VOC Content : None
Surface Bond : Excellent
|Equipment : Non Atomizing Spray e.g. Use knapsack or backpack, airless spray or us a coarse bristle broom.
Cleaning : Water
Typical Specification : One coat, however if applied over a very old/porous concrete 2 applications may be required due to the porosity.