A few months ago, we got a call from a customer requesting an LVT (luxury vinyl tile) flooring installation in their kitchen.
The subfloor was concrete
SImple job you say?
Not so, they had installed the concrete floor themselves which was laid with underfloor heating pipes in two seperate slab sections.
Leaving a rather dodgy looking 7mm seperation crack between the two seperate concrete slabs.
Normal procedure on a concrete floor is to coat the floor with a 3mm (minimum) thick coat of professional self levelleing compound.
After inital moisture testing (BS8203 standards) showed that moisture was at an acceptable level, we had to fathom how to proceed to lay any sort of floorcovering that would not be afftected by any expansion or contracion of the seperate slabs, which would result in the cracking of any levelling compound and the destruction of their beautifully installed floor.
After speaking to a few dif screed manufacturers, we decided upon using the Jumpax system, which is a floating subfloor system which would not be affected by the two seperate slabs movements, whilst still allowing maximum heat transfer from the underfloor heating system.
Customer was very happy with the results, and safe in the knowledge that the subfloor will never be an issue for the flooring in the future.
The floor was completed a few weeks ago, as you can see from the pics below, looks fantastic, and we are now booked in to do their carpets in the rest of the house in a couple of weeks!