Underfloor Heating Screed · Devon
Underfloor Heating Screed for St Thomas Builds
Underfloor heating only works as well as the screed encasing it — and in St Thomas that means a high-thermal-conductivity liquid pour that wraps every pipe with no voids.
Ready for a laser-flat floor in St Thomas?
Send us the floor area, build-up and target dates — we'll come back with a fixed quote and a date.
Get a St Thomas quote07791 510849 WhatsApp usGet a fixed price for Underfloor Heating Screed for St Thomas Builds
30 seconds. We'll come back same-day with a fixed price and next available date.
Or call our landline on 01392 237700
Underfloor heating only works as well as the screed encasing it — and in St Thomas that means a high-thermal-conductivity liquid pour that wraps every pipe with no voids.
The screed self-levels around every loop, eliminating the voids you get under hand-laid traditional screed. That means the floor responds faster when the heating calls for it, and stores less wasted heat.
Most of our St Thomas jobs sit within 30 minutes of base, so site visits stay simple and pour days run to time. St Thomas sits Exeter (1 mi), and we work the surrounding villages on the same week's diary.
Who this is for in St Thomas
St Thomas runs a healthy mix of residential renovation and small-to-medium commercial fit-out. We price both, and run both with the same fixed-price approach.
St Thomas at a glance
County
Devon
District
Exeter
Postcode
EX4
Nearest city
Exeter (1 mi)
Nearest motorway
M5 (J31, ~3 mi)
Primary A-road
A377
Local industries
independent retail, hospitality
Common builds
Victorian terraces, riverside new flats
Underfloor Heating Screed in St Thomas — how it works
Liquid UFH screed lets you run a thinner build-up than traditional bays — useful when ceiling heights or threshold levels are tight in St Thomas renovations.
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.
What to expect on pour day in St Thomas
- 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
Floors poured around St Thomas
Materials and systems we use in St Thomas
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.
Within easy reach of St Thomas
Common St Thomas build questions
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.
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.
When can I switch the underfloor heating on in St Thomas?+
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 St Thomas 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.
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.
Do you fit the UFH pipes yourself?+
We work alongside your chosen UFH installer rather than fitting pipes ourselves — most St Thomas jobs come with a heating sub-contractor already lined up, and we coordinate dates with them.
Proof from the Devon workload
Ready for a laser-flat floor in St Thomas?
Send us the floor area, build-up and target dates — we'll come back with a fixed quote and a date.
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