Our client was looking to invest in a durable, long lasting hygienic floor for the new kitchen. With their heart set on white terrazzo, we recommended using Flowcrete Mondeco Arctic, a range of off-white seamless epoxy terrazzo floors. White is a challenging colour to work with, most epoxies offer an 'off white' colour but achieving true white in epoxy is difficult and more expensive than standard colours.
White Resin Terrazzo
Installed over Tarmac TufScreed
Underfloor Heating in screed
In-Situ Hand Laid
We provided the client with a number of samples - the choice came down to Mondeco Arctic Alaska, and Mondeco Arctic Glacier. Once we'd agreed on the floor finish, we produced drawings and consulted with regards to substrate, expansion joints and joints in doorways.
Tarmac TufScreed at 50mm was used as the screed of choice to build up levels over the underfloor heating. This was allowed to crack & dry over approximatley 6 weeks, with the underfloor heating being commissioned prior to starting works. Premfloor weren't involved installing the screed, but advised on a brand we trust.
Tests were performed including a pull-off test to ensure the screed was of suitable strength to pass the 25 N/mm2 substrate requirement. Then several intrusive moisture tests were performed. On this occasion the readings came back slightly lower than expected in patches so we recommended a liquid DPM to prevent against moisture damage.
A diamond cupstone with dust extraction was used to abrade the surface, removing any contaminants and lowering any high spots. Once the floor was completley vacuumed we tidied the area and protected edges.
Where areas of the screed were low (such as along the wall and in doorways) we raised the level to the rest of the floor. Cracks in the screed are dressed with a bandage and swamped in primer to affix to the floor. As this was a pourous substrate, we applied a base coat of primer before applying a dpm.
Using a combination of roller and trowel, we supplied & installed a liquid dpm to the floor, followed by a scatter of quartz sand.
With the terrazzo being white, our mixing equipment had to be immaculatley clean. We opted for a Baron M80 forced action mixer which comfortably handles the 49kg mondeco mix. The project was around 50m2 and was troweled down in around 5 hours. This included the main kitchen area, corridor to the back door and a bathroom.
As this installation was done in spring, it was a little cold so we allowed around 30 hours for the epoxy to cure. We then proceeded with our HTC 420 floor grinder. The initial cut to the epoxy resin was using metal bonded diamonds right through to a finishing grade of 200 grit. We finished on resin bonded diamonds using water, we recommended against polishing to a higher shine for safety reasons.
A PU sealer is used to aid in the prevention of UV yellowing, which is applied to the floor and allowed to cure overnight. Following that we finish with 2 coats of premium high solids metallised floor polish. After 24-48 hours we returned to buff the floor leaving a nice shine.
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