Solid Flooring Prep

[peter lewis]

Hi im fitting a solid wood flooring in hallway. The previous soild oak has been removed which had been stuck down.

The subfloor now has 70-80% of the old flooring adhesive still on the old screed which is very uneven. I know ill need to use a SLC to get the floor flat & even. My query is how do i go about levelling ontop of the old adhesive which is not MS polymer but is a hard cured green / olive & is a nightmare to get up!
Please help...

 

[vinn]

Is the "old screed" a SLC or do you actually mean a sand and cement screed or the concrete slab?

What you have to be cautious about is raising the new FFL above the height of the old FFL.

 

[dazlight]

Solid wood has to be glued down to a high compressive Screeding compound.
So if floating a floor you could use Ardex NA over the old adhesive if fixed down well.
But as it's solid you will be best to remove the old adhesive and use a water mix smoothing compound.