Traditional Sand & Cement Screed · Dorset
Traditional Sand & Cement Screed for Poundbury Builds
Not every Poundbury floor wants a pump on the driveway. A traditional sand and cement screed, hand-laid to bays and trowelled flat, still earns its place on deep fills, external thresholds and jobs where a wet-mix, robust finish matters more than speed.
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Not every Poundbury floor wants a pump on the driveway. A traditional sand and cement screed, hand-laid to bays and trowelled flat, still earns its place on deep fills, external thresholds and jobs where a wet-mix, robust finish matters more than speed.
Unlike a self-levelling liquid screed, sand and cement is placed and compacted by hand, so we control the fall towards a drain, form an upstand at a threshold, or feather it into an existing floor level in a way a pumped pour cannot.
Most of our Poundbury jobs sit within 30 minutes of base, so site visits stay simple and pour days run to time. Poundbury sits Dorchester (1 mi), and we work the surrounding villages on the same week's diary.
Traditional Sand & Cement Screed in Poundbury — how it works
For Poundbury wet rooms, balconies and any area with sustained water contact, sand and cement is usually the only sensible screed choice, since gypsum-based liquid screeds are not designed to tolerate standing water.
We mix a semi-dry sand and cement screed on site or bring it in via a screed pump, lay it to string lines or laser-set pins in bays, then compact and trowel it to a flat, dense surface. It is slower than a liquid pour, roughly a day of drying time per millimetre of depth once you get past the first 50mm, but it tolerates a much wider range of site conditions.
Local facts that shape every Poundbury pour
County
Dorset
District
Dorset
Postcode
DT1
Nearest city
Dorchester (1 mi)
Nearest motorway
M5 (J25, ~46 mi)
Primary A-road
A35
Local industries
local retail, school and community builds
Common builds
1930s semis, estate new-builds
Common briefs across Poundbury
- 1930s semis — a regular brief in Poundbury
- Estate new-builds — a regular brief in Poundbury
- Kitchen-diner extensions — a regular brief in Poundbury
- Garden-room outbuildings — a regular brief in Poundbury
- Local retail — a regular brief in Poundbury
Floors poured around Poundbury
Step-by-step for a Poundbury job
- 1
Site visit to assess substrate, falls, depth and access, since sand and cement can be barrowed where a pump truck cannot reach
- 2
Substrate prep, priming or DPM, and setting out of bay lines and laser levels
- 3
Mix and place the screed in bays, compacting as we go to remove voids
- 4
Hand float or power trowel to a flat, dense SR2 finish
- 5
Protect and allow to cure, typically a day per millimetre of depth after the first 50mm
- 6
Follow-up inspection before floor coverings or tiling begin
Proof from the Dorset workload
Other areas we cover near Poundbury
Cemfloor systems for Poundbury
Sand and cement (typically 4:1 or 5:1 mix)
Semi-dry, hand-compacted mix ratio adjusted to depth and loading.
SBR bonding agent
Slurry-brushed onto the substrate for bonded screeds under 40mm.
Polypropylene fibre reinforcement
Added to reduce shrinkage cracking on larger bays.
DPM and separating membrane
For unbonded or floating screeds over insulation.
Falls formed to drain outlets
Built into the screed thickness for wet rooms and balconies.
Edge and movement joints
Set at bay lines, doorways and around columns.
Common Poundbury build questions
Can sand and cement screed go over underfloor heating?+
It can, though thermal response is slower than a liquid screed because of the voids that form around hand-laid pipework. For Poundbury UFH jobs we will usually recommend liquid screed unless there is a specific reason to use sand and cement.
What SR rating do you achieve on a trowelled screed?+
We finish sand and cement to SR2, within 3mm under a 2m straight edge, which is suitable for most tiled finishes. If you need SR1 flatness for large-format tile or resin, liquid screed is usually the better route.
Will the screed crack?+
Bay joints and fibre reinforcement control shrinkage cracking. We set bay sizes and joint positions at doorways and depth changes to minimise the risk on any Poundbury job.
How is sand and cement screed different from liquid screed in Poundbury?+
Sand and cement is a semi-dry mix, hand-laid and trowelled in bays, whereas liquid screed is pumped and self-levels. Sand and cement suits deep fills, external areas and wet rooms; liquid screed suits large flat internal floors that need to dry quickly.
How long does a sand and cement screed take to dry in Poundbury?+
Roughly a day per millimetre of depth once past the first 50mm, so a 65mm floor is typically ready for coverings in around six to eight weeks, depending on ventilation and site conditions.
Do you use a screed pump for sand and cement in Poundbury?+
On larger jobs, yes, a screed pump can deliver the semi-dry mix into the building, which speeds up placement while keeping the hand-trowelled finish.
DT1 coverage for traditional screed
From Poundbury out to the surrounding villages, we carry both liquid and sand and cement screed crews, so you get the right one for the job.
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Tell us the rough size and location — we'll come back with a fixed quote today.
Or call our landline on 01392 237700
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