This was a complex project which presented us with multiple types of existing floor surfaces and a newly installed anhydrite liquid screed (installed by a 3rd party). Both the new and old floors were quite un-level. The owner of the house had already installed their kitchen onto their new screed, but unfortunately the floor was not in good enough condition or at the right level to be able to install their chosen floor covering. To keep the floor build up to a minimum, we recommended a thin section, bagged levelling screed which meant that we could set a starting datum of just 2mm over the high areas of the floor. The variation in the existing levels resulted in a 35mm maximum depth in places.
Firstly we provided the customer with one of our digital thermo-hygrometers to test the moisture content in the new anhydrite screed which was confirmed to be under 75% relative humidity. The underfloor heating was also commissioned in accordance with the manufacturer’s guidelines. We then opted for two different types of primer to ensure a good, lasting bond and to avoid any reaction between the calcium sulphate screed and our cementitious bagged screed.
Using our Utiform Quattro mixer meant that despite the short working times of the chosen product, we are still able to install high volumes of bags without compromising on surface finish. The end result… a perfectly level floor that the customer can now install their Karndean flooring directly on top of. The cherry on the cake… as it’s ready to walk on in 3 hours, the customer was back in their house in time for dinner. There are no drying times for this bagged compound, so the flooring installer is starting first thing tomorrow. A very happy customer!
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