Semi-dry vs wet screed — which to choose

Every renovation starts with the same question: go for a wet (classic) screed or a semi-dry machine-applied one? Here is an honest look at both, with the real pros and cons of each.

The difference in short

Wet screed is the classic cement-sand mortar with plenty of water. It is poured by hand and levelled with a straightedge.

Semi-dry screed uses the same cement and sand with three to four times less water. The mortar is pumped to the room through a hose and then levelled and power-trowelled by machine.

Method

Wet

Mixed on site in a mixer or a bucket, poured onto the substrate and levelled with a straightedge run over screed rails. One or two people can do it, DIY included.

Semi-dry

The mortar is produced by a pneumatic pump (Brinkmann, Putzmeister) that doses cement, sand, fibre and water to a strict ratio and delivers it through a hose as high as the 30th floor. On site a crew of two or three levels it and finishes it with a power trowel.

Speed

Price

The gap is smaller than people expect. Semi-dry is the more involved method, but the speed pays for it:

• Wet screed — from UAH 400/m² (labour + materials)
• Semi-dry — from UAH 425/m² (labour + materials)

On larger areas semi-dry works out cheaper — fewer man-hours.

Pros and cons

Wet screed — pros

• You can do it yourself if you want to
• Cheaper materials
• Everyone knows the method

Wet screed — cons

• Lots of water → risk of leaking through to the flats below
• Slow to dry
• Higher risk of cracking and shrinkage
• Hard to cover a large area in a day
• Messy work

Semi-dry — pros

• Almost no water — nothing to leak
• Dries two to three times faster
• Fewer cracks thanks to the fibre
• Large areas in a day (up to 150 m²)
• Clean — no mess through the flat
• Can be pumped up to the 30th floor

Semi-dry — cons

• Needs specialised equipment
• Not a DIY job
• On small areas (under 30 m²) it costs more than wet screed

What to choose, case by case

A flat in a new-build

Semi-dry. Speed, no water, ready for tiles from day 7 — it all points one way. The renovation does not stall for months.

Underfloor heating

Semi-dry only. The fibre reinforces the whole volume and there is little water, so the first heat-up cannot cause a steam blowout. Wet screed is used over heating too, but the cracking risk is higher.

A private house, ground floor

Either works. Over 80 m², semi-dry is faster and no dearer. For a single 15–20 m² room, wet screed is a fair call.

Replacing a screed in an old building

It depends on the floor. Fifth storey with neighbours underneath — semi-dry, no argument. Flood the flat below and the trouble lasts a long time.

In short

In 2026 some 80% of professional crews in Kyiv lay semi-dry screed. It is the current standard. Wet screed survives for small jobs and for buildings the equipment cannot reach.