Taking bumps out traditional screed

[Samuelnorton]

Hello,

I have attempted to lay my extension sand and cement screed. On the whole it is not a total disaster however it is 20mm higher in one corner (in comparison to the opposite corner 5 metres away).

Is there any way I can sand/grind this section down?

Unfortunately self levelling compound wouldn’t work as the floor is flush with the ground floor level in the rest of the house.

Thanks

 

[Notch7]

Is it an unbonded screed, ie screed laid over insulation?

 

[Samuelnorton]

Is it an unbonded screed, ie screed laid over insulation?

Yes it is. Approx 75mm deep (apart from the high spot!)