Evening all...got a floor to do in a fortnight that has a section dropping away, c. 5m2 worth of 18m2. Drops from the flat bulk of floor down by roughly 25mm at far end. Customer has two bags of Toppfix SLC from topps and I have 3 on the van, so have enough to do it, but... Toppfix says will cover up to 6mm.

Next problem is that the kitchen is installed so I cant go shifting the cabinet feet up by that amount (The worktop is level, so I could move the feet up, but dont think getting under the cabinet to get everything level is that practical), so will need to shutter the edges?

What great ideas do you have?

shuttering with 2x1 par on edge silicone beaded will be just the job Chris, easily removable after with a jemmy

Originally Posted by chris.tiling

Evening all...got a floor to do in a fortnight that has a section dropping away, c. 5m2 worth of 18m2. Drops from the flat bulk of floor down by roughly 25mm at far end. Customer has two bags of Toppfix SLC from topps and I have 3 on the van, so have enough to do it, but... Toppfix says will cover up to 6mm.

Next problem is that the kitchen is installed so I cant go shifting the cabinet feet up by that amount (The worktop is level, so I could move the feet up, but dont think getting under the cabinet to get everything level is that practical), so will need to shutter the edges?

What great ideas do you have?

They mean 6m2 at 6mm thick....25mm at one end will be very difficult to control, but maximum for toppfix screed is 6mm thick.....meaning 4 layers will give you 24mm

Why not use hardibacker on the lowest points and then self level over the complete area