Underfloor Heating Screed · Devon
Culmstock Underfloor Heating Screed Specialists
Underfloor heating only works as well as the screed encasing it — and in Culmstock that means a high-thermal-conductivity liquid pour that wraps every pipe with no voids.
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Underfloor heating only works as well as the screed encasing it — and in Culmstock 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 Culmstock jobs sit within 30 minutes of base, so site visits stay simple and pour days run to time. Culmstock sits Exeter (20 mi), and we work the surrounding villages on the same week's diary.
Culmstock projects we see most
- Stone farmhouses — a regular brief in Culmstock
- Barn conversions — a regular brief in Culmstock
- Cottage extensions — a regular brief in Culmstock
- Occasional new-build cottages — a regular brief in Culmstock
- Agriculture — a regular brief in Culmstock
Built for Culmstock rural self-builders and farms
Culmstock sits rural — barn conversions, self-builds, agricultural sheds, equestrian floors. Access is usually fine, but power and water on site need confirming up front. We do that at the site visit.
Underfloor Heating Screed in Culmstock — how it works
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.
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.
Cemfloor systems for Culmstock
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.
Step-by-step for a Culmstock job
- 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
Latest jobs across Devon
Nearby villages and towns
What backs our Culmstock work
Culmstock screed questions, answered
How does this affect my floor coverings in Culmstock?+
Once commissioned and the floor moisture content is signed off (CM test, typically below 0.5% for tile), most coverings go down as normal. We hand you a commissioning record.
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.
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.
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.
When can I switch the underfloor heating on in Culmstock?+
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 Culmstock 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.
Ready for a laser-flat floor in Culmstock?
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
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