Underfloor Heating Screed · Devon
Cemfloor-Certified Underfloor Heating Screed Across Clyst St Mary
Liquid UFH screed in Clyst St Mary replaces the air gaps and voids that bog standard sand-and-cement leaves around pipes, lifting system response and cutting running costs.
Get a fixed price for Cemfloor-Certified Underfloor Heating Screed Across Clyst St Mary
30 seconds. We'll come back same-day with a fixed price and next available date.
Or call our landline on 01392 237700
Liquid UFH screed in Clyst St Mary replaces the air gaps and voids that bog standard sand-and-cement leaves around pipes, lifting system response and cutting running costs.
We pour Cemfloor Therm liquid screed over your UFH pipes at 50mm above pipe (typically 65-75mm total over insulation), giving full pipe encapsulation, fast thermal response and a finished surface flat to SR1.
Most of our Clyst St Mary jobs sit within 30 minutes of base, so site visits stay simple and pour days run to time. Clyst St Mary sits Exeter (4 mi), and we work the surrounding villages on the same week's diary.
Underfloor Heating Screed in Clyst St Mary — how it works
For Clyst St Mary UFH builds the typical sequence is: insulation board down, pipes clipped and pressure-tested, edge insulation in place, then we pump and level in a single visit.
Liquid UFH screed lets you run a thinner build-up than traditional bays — useful when ceiling heights or threshold levels are tight in Clyst St Mary renovations.
What we plan around in Clyst St Mary
County
Devon
District
East Devon
Postcode
EX5
Nearest city
Exeter (4 mi)
Nearest motorway
M5 (J30, ~1 mi)
Primary A-road
A3052 / A376
Local industries
Winslade Park offices, retail park trade
Common builds
ribbon-developed semis, new estates at Winslade Park
Where liquid screed earns its keep in Clyst St Mary
- Ribbon-developed semis — a regular brief in Clyst St Mary
- New estates at Winslade Park — a regular brief in Clyst St Mary
- Retail-park units — a regular brief in Clyst St Mary
- Winslade Park offices — a regular brief in Clyst St Mary
- Retail park trade — a regular brief in Clyst St Mary
Clyst St Mary-area projects
How a Clyst St Mary pour runs
- 1
UFH installer fits manifold, pipes and pressure-tests to 6 bar
- 2
We confirm edge insulation, DPM and pipe coverage depth
- 3
Pump and level the screed with pipes still under pressure
- 4
Slow commissioning of the heating — usually after 7 days, ramping per manufacturer spec
- 5
Floor coverings once moisture is signed off and commissioning is complete
Why Clyst St Mary clients pick us
- 01Cemfloor-certified, fully insured, CDM-aware
- 02Coordinated with most South West UFH installers
- 03Pre-start meeting standard on every commercial job
- 04Local knowledge — we know the M5 (J30, ~1 mi) access window and A3052 / A376 traffic patterns
Adjacent areas — usually same-week diary
Specifications suited to Clyst St Mary builds
Cemfloor Therm
Liquid screed engineered for UFH — lambda 2.1 W/mK, fast response.
PIR/Phenolic insulation board
70-150mm typical depending on build regs U-value target.
Edge insulation strip
Critical around UFH zones to allow thermal expansion.
Pressure-testing kit
Pipes held at 6 bar through the pour to flag any damage immediately.
What people in Clyst St Mary usually ask
Can you pour over a heat-pump system in Clyst St Mary?+
Yes — and we'd argue you should. Heat pumps run at lower flow temperatures than gas, so the screed's thermal conductivity matters more, not less.
When can I switch the underfloor heating on in Clyst St Mary?+
On Cemfloor Therm we typically start a slow commissioning cycle from day 7, ramping 5°C per day per manufacturer spec. Forcing it earlier risks cracking, so we hold Clyst St Mary clients to the schedule.
What depth of screed over UFH pipes do you recommend?+
Minimum 50mm cover above the highest pipe — usually a 65-75mm total slab over insulation. Thicker if you want more thermal mass.
What if a pipe leaks during the pour?+
Pipes are held at 6 bar through the pour. Any pressure drop is flagged immediately and we stop, fix and continue — this is exactly why we keep the manifold under test.
Will the screed crack as the UFH heats up?+
Properly isolated at the edges and at doorway joints, no. We pour with the pipes pressure-tested and follow a controlled commissioning schedule.
Does liquid UFH screed improve EPC ratings?+
Indirectly — yes. Faster response and lower running temperatures help heat-pump COP, which feeds into your SAP/EPC. We'll share the manufacturer data your assessor needs.
Book your Clyst St Mary pour
Diary fills two to four weeks ahead. Pin a date now and we'll confirm logistics.
Ready to get a price?
Tell us the rough size and location — we'll come back with a fixed quote today.
Or call our landline on 01392 237700
Related on this site