Thermascreed Ltd

Thermascreed Ltd Thermascreed Ltd are a company specialising in Underfloor Heating, Screeding and Flooring

Garage conversions need the right screed specTurning a garage into a living space? The floor build-up matters more than ...
09/09/2026

Garage conversions need the right screed spec

Turning a garage into a living space? The floor build-up matters more than most people expect, mainly because garage slabs sit lower than the house and often aren't insulated at all.

Get the levels wrong and you'll end up with a step down into the room, or a ceiling height that feels cramped once everything's built up.

A few things worth sorting before screed goes down:

Insulation thickness needs checking against your finished floor level, especially where it meets the existing house threshold.
Underfloor heating is worth considering at this stage. It's far easier to include now than retrofit later.
Lightweight screed can help where floor buildup height is tight, without sacrificing strength.

We do free site visits across Bristol and the wider UK to work out the right spec before anything's ordered. What's driving your conversion, extra living space, a home office, or a rental unit?

https://www.thermascreed.com

A nice small site started this week. Full prep including DPM, PIR insulation, Slip membrane and 30mm perimeter insulatio...
08/09/2026

A nice small site started this week. Full prep including DPM, PIR insulation, Slip membrane and 30mm perimeter insulation with a 75mm Screed to finish

EPD James Hughes

Cold edges, warm floor: fixing thermal bridgingHeat a floor beautifully and still lose money at the edges. That's what t...
08/09/2026

Cold edges, warm floor: fixing thermal bridging

Heat a floor beautifully and still lose money at the edges. That's what thermal bridging does. It's the gap where insulation stops short and heat escapes straight through the slab into the wall or ground beyond, quietly pushing your running costs up no matter how good the system underneath is.

The usual culprit is perimeter insulation that's been skipped or skimped on. A continuous edge strip around the slab, tying into the wall insulation, closes that gap and stops heat sneaking out sideways.

Junctions matter just as much. Where floors meet external walls, doorways, or old foundations, insulation needs to run unbroken. Any break there is a cold spot waiting to happen.

Screed depth and insulation thickness need to be specified together, not worked out separately once the job's underway.

What's the insulation spec looking like on your current project?

https://www.thermascreed.com

Cold buildings and screed damage this winterLeaving a building unheated over winter can cause real problems for a screed...
07/09/2026

Cold buildings and screed damage this winter

Leaving a building unheated over winter can cause real problems for a screed floor, even if it looks fine on the surface.

Screed needs to cure slowly and steadily. Frost can stop that process altogether, leaving the surface weak and prone to cracking once weight is put on it.

If underfloor heating pipes are already in, letting the building drop to freezing can affect the screed around them too, sometimes leading to uneven drying and hairline cracks that show up months later.

Empty properties over winter are especially at risk, unheated for weeks with no one checking on conditions.

A bit of background heat, even just enough to keep frost out, makes a real difference to how the floor performs long term.

Got a project sitting empty this winter? Worth asking whether the screed is protected before the cold really sets in.

https://www.thermascreed.com

Uneven floors cost retail fit-outs more than you'd thinkAn out-of-tolerance floor can quietly derail a shopfitting progr...
04/09/2026

Uneven floors cost retail fit-outs more than you'd think

An out-of-tolerance floor can quietly derail a shopfitting programme. Shelving units rock, glass display cases won't sit flush, and automatic doors can stick if the slab isn't within spec.

For commercial and retail fit-outs, floor flatness isn't a finishing touch, it's a foundation issue. Most specifications call for tight tolerances, often within a few millimetres over a set distance, because so much of the fit-out (racking, flooring finishes, service counters) depends on a true, level base.

Getting there means the right screed for the job. That could be a pumped levelling compound for a fast, accurate finish, a rapid drying screed where the programme is tight, or a full sand and cement build-up where more depth is needed.

Skipping this step, or rushing it, tends to show up later: cracked tiling, doors that won't close properly, uneven wear on vinyl or resin floors.

If you're planning a retail or commercial fit-out, when's flatness getting checked in your programme, before or after the trades start moving in?

https://www.thermascreed.com

Polymer-modified screed: what it's for and whyOrdinary sand and cement screed cracks under stress it wasn't built to han...
03/09/2026

Polymer-modified screed: what it's for and why

Ordinary sand and cement screed cracks under stress it wasn't built to handle. Adding polymers to the mix changes that.

The polymer binds the aggregate more tightly, so the finished screed gets better flexural strength and far better resistance to cracking. That matters most where floors take a beating: warehouses with forklift traffic, commercial kitchens, workshops, anywhere with heavy footfall or vehicle loads.

It also bonds better to the substrate underneath, which means thinner applications are possible without losing strength. Handy on renovation projects where floor height is tight.

Domestic jobs benefit too, particularly where underfloor heating is going in. The improved flexibility helps the screed cope with the constant expansion and contraction that comes with heating cycles.

Not every project needs it. Would you rather find that out before the screed goes down or after it's cracked?

https://www.thermascreed.com

Flooring specification tips for schools and collegesSchools take a beating no other building does. Hundreds of feet, dro...
02/09/2026

Flooring specification tips for schools and colleges

Schools take a beating no other building does. Hundreds of feet, dropped chairs, spilled paint, wheeled trolleys, all day, every day, for decades.

That's why floor build-up matters more here than in most projects. A screed that's fine under domestic tiles can fail under constant footfall and heavy furniture if it's not specified correctly for the loads involved.

Underfloor heating is worth factoring in early too. Schools often want even, low-background heat across large open-plan classrooms, and getting the screed depth and drying time right avoids delays before term starts.

A few things worth checking before work begins:

Fast-drying or rapid-drying screeds if the project has to fit around school holidays
Impact and load resistance for corridors, halls, and sports areas
Levelling compounds where old floors are uneven from years of use

Are you planning works for a summer or half-term deadline, and does your current spec actually allow enough drying time before floor coverings go down?

https://www.thermascreed.com

Screed curling: what causes it and how to stop itCurling happens when the top of a screed dries faster than the bottom, ...
01/09/2026

Screed curling: what causes it and how to stop it

Curling happens when the top of a screed dries faster than the bottom, causing the edges to lift and the slab to bow upward at the corners. It's one of the most common defects we get called out to inspect.

The usual culprits are uneven drying conditions, poor curing, and screed laid too thin for the job. Draughts across a site, direct sun through windows, or heating switched on too early can all dry the surface before the base has had a chance to catch up.

Prevention starts before the screed even goes down. Consistent curing (keeping the surface covered and protected from rapid moisture loss) matters more than most people expect, and getting the mix design and thickness right for the specific application matters just as much.

On underfloor heating projects, we also control when the system is fired up, since heating too soon is a classic trigger for curling and cracking.

Have you had issues with curling or cracking on a previous project?

https://www.thermascreed.com

Cold floors in older homes? The fix starts underneathOld solid floors lose heat fast, often more than the walls, because...
31/08/2026

Cold floors in older homes? The fix starts underneath

Old solid floors lose heat fast, often more than the walls, because there's no insulation layer doing the work for you.

We see this constantly on renovations across Bristol and the wider South West: a beautiful period property with a floor that's basically bleeding warmth into the ground.

Limecrete is one answer worth knowing about. It lets the floor breathe, which matters in older solid-wall buildings where trapped moisture causes real damage.

A well-designed screed also acts as the ideal base for underfloor heating, spreading warmth evenly instead of leaving cold spots near external walls.

Lightweight screed is another option where floor loading is a concern, common in older joisted structures that can't take a heavy traditional mix.

If you're planning a renovation, have you actually checked what's happening under your existing floor?

https://www.thermascreed.com

Get the screed sorted before the plans are finishedScreeding gets left until last on most jobs, and that's usually where...
28/08/2026

Get the screed sorted before the plans are finished

Screeding gets left until last on most jobs, and that's usually where the trouble starts.

The floor build-up affects door heights, staircase dimensions, and how underfloor heating performs once it's covered. Change the screed depth after the doors are ordered and you've got a problem nobody wants to pay for.

Lightweight screed and standard sand and cement screed behave differently, dry at different rates, and need different depths depending on what's going on top. Rapid drying screed can save weeks on a tight programme, but only if it's specified before subfloor work starts, not after.

We do free site visits and give clear guidance on this from the first phone call, before a spade goes in the ground.

If you're planning a renovation or new build in Bristol or anywhere else in the UK, how far along are your plans before screeding gets a mention?

https://www.thermascreed.com

Address

Clevedon
BS21

Telephone

+441275791158

Website

Alerts

Be the first to know and let us send you an email when Thermascreed Ltd posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Business

Send a message to Thermascreed Ltd:

Shortcuts

Share

Category