Underfloor heating screed is not just a layer of construction. It’s a component of the heating system. Scottish conditions place greater demands on heating systems, as many are the sole heat source and run for longer periods. We feel that the choice of screed is essential when considering comfort, efficiency and running costs.
Most difficulties with underfloor heating stem from the incorrect choice of screed. Insufficient heat output and sluggish warm-up times, cracked floors and late floor coverings are frequently a result of how the screed was specified, installed or dried. This is why screed, when used in conjunction with underfloor heating, should be treated as a thermal component rather than a finish.
Underfloor heating and screed act as one unit. The pipes or cables generate the heat, but it’s the screed that determines how and where the heat is distributed throughout this floor. When the screed is too thick, heat response slows. If it is too thin, hot spots and cracks can create problems. Floor finishes don’t work if they dry the wrong way.
On top of that, Scotland’s building stock makes things even more complicated. Most homes have increased heat loss, solid subfloors or retrofit limitations. Heat pump installations are also increasingly popular, underscoring the need for proper screed selection. Low-temperature systems rely on effective heat transfer, and the choice of floor screed for underfloor heating can significantly affect performance.
This guide explains:
- What screed is best for underfloor heating
- Why are there no ‘best’ screeds for installation in every one of your projects
- Performance effects of thickness, drying time and commissioning
- Where screed-free systems work, and where they don’t
- Most often seen causes of screed failures and how to eliminate them
The goal is simple. To help you understand how to choose the right type of underfloor heating from day one.
Key takeaways
- Screed forms an essential component of the underfloor heating system itself, and not simply a floor finish. Incorrect screed selection reduces heat output and efficiency.
- Typically, liquid screed offers a much quicker heat transfer and improved pipe coverage than sand and cement screed, particularly with heat pump systems.
- The thickness of the screed must be adjusted to the dimensions of the pipe and insulating material, as well as to the heat source. Too much depth increases response time, while too little risks cracking.
- Drying time is not the same as curing time. Underfloor heating must never be switched on before the screed is at the appropriate moisture level.
- The majority of UFH issues can be traced back to bad screed design, incorrect depth or rushed commissioning, rather than the heating system.
- What Is the Best Screed for Underfloor Heating?
- Liquid Screed vs Sand & Cement Screed for Underfloor Heating
- Screed Thickness for Underfloor Heating Installation
- Underfloor Heating Screed Drying Time (And When You Can Walk or Lay Floors)
- Can You Use Underfloor Heating Without Screed?
- Pressurising and Commissioning Underfloor Heating Before Screeding
- Common Problems: Cracks, Delays, and Poor Heat Output
- Best Screed Choice by Scenario (Underfloor Heating Focused)
- How to Choose the Right Installer for Underfloor Heating and Screed
- Frequently Asked Questions
- Conclusion: The Best Screed Is the One Designed With Your UFH System
What Is the Best Screed for Underfloor Heating?
The answer to the above query also depends on the underfloor heating system being used, not on a product name. There is no single ‘best’ screed for underfloor heating, only the best screed for a specific system and building. The best choice will depend on how the heating system works and how the building is built.
The right screed is the one that fits:
- The source of heat (boiler or heat pump)
- Pipe routing and spacing of underfloor heating
- The available floor build-up depth
- The structural value of the floor
- The necessary drying and flooring calendar
A screed that works well in a new-build with a heat pump could be unsuitable for all but the shallowest floors in an existing retrofit. If you have the patience to let it dry, a quick-drying screed might not be suitable, especially in large sections or on some floor finishes.
Choosing the best screed is about finding the right balance in performance. Heat, structure stability, drying time, and tolerability with the floor should all be determined by the requirements. Neglecting any of these points can frequently compromise the system in the long term.
This is why underfloor heating and screed should be specified together. There are issues when screed and heating are separated by trades. There is a leadership vacuum, and then everything gets wrecked.
Thinking about installing underfloor heating and want to be sure the screed choice supports proper heat output and drying times?
Next Level Underfloor Heating and Screed Solutions
Get clear advice on system design, screed depth, and performance before work starts by speaking with Next Level’s underfloor heating and screed specialists.
👉Use the contact page to arrange a consultation and review your project requirements
🏆 Trusted by 100+ Scottish property owners | 5.0★ on Google
* 10-year installation guarantee included on all screed projects *
Kelli Al-barwani, ⭐️⭐️⭐️⭐️⭐️ Google Review:
“I recently had the pleasure of working with Next Level Underfloor Heating and Screed Solutions for a renovation project at my property, and I couldn’t be more satisfied with the results. From fitting high-quality insulation on a suspended floor to installing a brilliant underfloor heating system and screeding, the team was professional and efficient throughout. The entire process was seamless, and the heating system is now working fantastically well, keeping my home warm and comfortable.”
Liquid Screed vs Sand & Cement Screed for Underfloor Heating
All underfloor heating systems are built on a screed, and there are two types most people know: sand-cement screed and liquid screed. The best choice depends on your heat source, floor depth, and project timing.
Liquid Screed for Underfloor Heating
Liquid screed, commonly calcium sulphate or cement-based, is poured around the pipes of your underfloor heating. This full contact enhances heat transfer from the pipes to the screed.
Liquid screed usually allows:
- Lower screed thickness over pipes
- Speedier evenly-distributed heat
- Decreased space around the heating pipes
For heat pumps, liquid screed is often a good fit. Heat pumps generate less heat at low flow temperatures, so good heat transfer is important. The addition of liquid screed helps the system maintain constant surface temperatures with minimal lag time.
Liquid screed is also ideal for large floor areas. It self-levels and reduces site labour time. This means you get a better finish if you install it properly.
Though liquid screed won’t be the first option in every situation. It requires controlled drying conditions. It also requires surface preparation before some types of floor finishes are applied. Also, if this step is overlooked, carpets will fail.
A further limitation is the increased initial drying time required before commissioning for heating with liquid screed. This has to be built into the build schedule.
Sand and Cement Screed for Underfloor Heating
Sand-and-cement screed is another classic choice. It is mixed on site or delivered to the job site premixed and placed using manual or pneumatic equipment.
This screed type:
- Handles point loads well
- Suitable for use on most floor types
- Suits smaller or irregular spaces
Sand and cement screed needs to be thicker over voids where underfloor heating pipes are present. This extra weight slows the response to heat. It also takes floors longer to warm up and cool down.
In the case of boiler-based systems, this delay may not be a problem. For heat pumps, it can compromise efficiency.
Drying time is another factor. A conventional sand-and-cement screed takes ages to dry. Floor finishes can take a few weeks unless you choose an expedited mix.
Considering liquid screed or sand and cement screed for underfloor heating and unsure which suits your system design?
Next Level Underfloor Heating and Screed Solutions
Get clear guidance on screed type, thickness, and heat performance from Next Level’s underfloor heating and screed specialists before you commit.
👉 Use the contact page to discuss your project and confirm the right screed approach
🏆 Trusted by 100+ Scottish property owners | 5.0★ on Google
* 10-year installation guarantee included on all screed projects *
Louis Reed, ⭐️⭐️⭐️⭐️⭐️ Google Review:
“What a team Allan and his boys are. Very knowledgeable and helpful. Left an amazing level finish on the floor. Take great pride in there work no fault can be found in there work 100% recommend to anyone looking to put underfloor heating in weather a new build renovation or home upgrade.”
Screed Thickness for Underfloor Heating Installation
Heat output, warm-up time and system efficiency are all influenced by screed thickness. Incorrect depth is still the most prevalent cause of underfloor heating failure. The thickness should be compatible with the type of screed you are using, the size of pipes and the heat source.
Minimum Screed Thickness Requirements
Each screed system has its own set of minimum depth rules.
For liquid screed:
- Average depth of 20-30mm over the pipes
- Total depth often sits between 45 and 55mm
- Pipe coverage all around is a must for even heat transfer
For sand and cement screed:
- Usual depth is 50-65mm over the pipes
- Total depth often reaches 65-75mm
- Thicker mass increases thermal inertia
These numbers will adjust as load increases or insulation decreases. Many commercial areas require the added depth to accommodate traffic and heavier furniture.
How Thickness Affects Heat Output
Thinner screed transfers heat faster. The floors get warmer more quickly and are more sensitive to changes in the thermostat. This is perfect for low-temperature systems such as heat pumps.
Thicker screed stores more heat. This can stabilise the room temperature, but is not a responsive technology. Systems take longer to reach set temperatures and have longer cooling times.
And if the screed foundation is too thick, the heating system has to work harder. This increases UFH installation and operating costs and reduces efficiency.
Cracking is more of a risk if there’s not enough screed. Pipe coverage becomes uneven. Localised sections get cooled down.
Planning screed depth for an underfloor heating installation and want to avoid slow heat-up or poor output?
Next Level Underfloor Heating and Screed Solutions
Get clear advice on minimum depths, pipe coverage, and system performance from Next Level’s underfloor heating and screeding specialists.
👉 Use the contact page to review your floor build-up and confirm the correct screed thickness
🏆 Trusted by 100+ Scottish property owners | 5.0★ on Google
* 10-year installation guarantee included on all screed projects *
Fiona Gilroy, ⭐️⭐️⭐️⭐️⭐️ Google Review:
“Gordon and his team are knowledgeable and so reassuring throughout the process of planning, installation and after care. After I had a cowboy joiners cut through my underfloor heating pipes . Gordon and his team came to my aid and knowing he was able to repair the damage and left me reassured. Thank you again for rapid response and repair. One very grateful customer”
Underfloor Heating Screed Drying Time (And When You Can Walk or Lay Floors)
Drying and curing are not the same. Combine the two, and you get cracked screed, failed flooring and underperforming underfloor heating. Understanding the difference is essential.
Drying vs Curing: The Critical Difference
Curing is a chemical process that the screed undergoes to gain strength.
Drying is the evaporation of water from the screed.
Screed may feel hard and walkable yet be too wet for flooring or heating. Starting the system or laying down floors before moisture levels are safe can trap water in the build-up.
That trapped moisture causes:
- Cracking
- Debonding
- Floor covering failure
- Reduced heat output
When Can You Walk on Screed?
This depends entirely on screed type.
Liquid screed (anhydrite or flowing screed):
- Light foot traffic: 24-48 hours
- Heavy traffic: after 5-7 days
Sand and cement screed:
- Light foot traffic: 24-48 hours
- Heavy traffic: after 7 days
This, however, does not mean it’s ready to have the heat turned on and floor covering installed.
Underfloor Heating Screed Drying Time
Drying times will depend on both depth and ventilation, as well as on ambient conditions such as temperature and humidity.
Liquid screed drying time:
- Rough guide: 1 day per mm up to 40mm
- After 40mm: drying slows significantly
- 50-60mm liquid screed can take 6–8 weeks to fully dry naturally
Sand and cement screed:
- Rough guide: 1mm per day
- 65-75mm depth often requires 2+ months
These are not guarantees. If drying is not effectively regulated, these timelines are often extended in Scotland’s colder, wetter climates.
When Can You Lay Flooring After Screeding?
You can only have so much moisture on the floors.
Typical thresholds:
- Tiles: medium-low risk, but still need to be tested for moisture
- Lumber and engineered wood: tight restrictions
- Vinyl and laminate: very moisture-sensitive
Moisture testing is the only way to be sure. Guessing leads to failure.
Floors are laid too early, locking moisture into the system. Heat from above subsequently forces it upward, damaging adhesives and finishes.
Commissioning Underfloor Heating in Screed
Do not use heating systems to accelerate drying unless the screed manufacturer has specifically approved this.
Properly commissioned screed is a controlled process:
- Screed must reach initial cure strength
- Heating is introduced gradually
- Flow temperature is increased in stages
- System is then reduced slowly
This controlled cycle:
- Releases residual moisture safely
- Reduces internal stress
- Minimises cracking risk
Environmental Factors That Slow Drying
Several factors of the site have an effect on drying time:
- Low ambient temperature
- High humidity
- Poor ventilation
- Excess screed thickness
Proper temporary heating, dehumidification, and ventilation often make a bigger difference than turning underfloor heating on a day or two early.
If drying timelines are critical and flooring dates are fixed, the screed and UFH system must be designed together.
Next Level Underfloor Heating and Screed Solutions
Next Level plan drying, commissioning, and flooring compatibility from day one to avoid delays and failures.
👉 Use the contact page to discuss drying timelines and commissioning requirements before screeding starts
🏆 Trusted by 100+ Scottish property owners | 5.0★ on Google
* 10-year installation guarantee included on all screed projects *
Steve Grossett, ⭐️⭐️⭐️⭐️⭐️ Google Review:
“Gordon and the guys did an absolutely amazing job. They came via word of mouth and we would have no problem with recommending them to anyone.”
Can You Use Underfloor Heating Without Screed?
Yes, underfloor heating can work without a screed, but only in certain circumstances. A no-screed system is typically a reaction to limitations rather than an upgrade in performance.
When Underfloor Heating Without Screed Is Used
Dry systems are typically used where:
- Floor build-up height is limited
- Structural load must be reduced
- Retrofit work prevents wet trades
- Timber joisted floors are retained
These systems use:
- Dry screed boards
- Routed insulation panels
- Aluminium heat spreader plates
- They avoid wet screed entirely.
When Screed Is Still the Better Choice
Screed remains the best option when:
- Underfloor heating is the main heating system
- Large open areas need even heat
- Heat pumps are used
- Long heating cycles are expected
Screed improves heat spread, reduces cycling, and stabilises indoor temperatures.
If you are weighing screed versus dry systems, the decision should be based on heat demand, floor build-up limits, and heat source, not convenience.
Next Level Underfloor Heating and Screed Solutions
Next Level assess structure, heat loss, and system design before recommending any no-screed option.
👉Use the contact page to confirm whether a screed-free UFH system is suitable for your floor build-up
🏆 Trusted by 100+ Scottish property owners | 5.0★ on Google
* 10-year installation guarantee included on all screed projects *
Erin McGuire, ⭐️⭐️⭐️⭐️⭐️ Google Review:
“Had the best experience working with Alan and his team. Communication was brilliant and were always on hand to answer my questions. So impressed with the service and the installation looks so neat and tidy. Absolute gem to work with and would highly recommended! This element of our project was new to me and a strategic nightmare but Alan and his team made it so much easier. Chuffed to bits! Thank you!”
Pressurising and Commissioning Underfloor Heating Before Screeding
Pressure testing is essential prior to screeding. If you skip it, you risk hidden ground leaks that are expensive to repair.
Why Pressurising Before Screed Is Non-Negotiable
Once the screed has been poured, you will lose access to the pipes.
Pressure testing:
- Confirms pipe integrity
- Identifies joint faults
- Prevents hidden leaks
A leak that shows up after screeding typically requires breaking out the floor.
Typical Pressurising Process
Most wet underfloor heating systems are:
- Filled with water
- Pressurised to working pressure
- Held under pressure during the pour
Standard test pressures range from 4 to 6 bar, depending on the system design.
Pipes remain in place and upright during screed installation. This serves to hold pipes in shape and to reveal damage straight away.
What Goes Wrong When This Step Is Skipped
Some of the deficiencies caused by inadequate testing are:
- Pipe punctures during screeding
- Undetected joint leaks
- Pressure loss after curing
- Uneven heating zones
When several contractors are responsible, it becomes difficult to attribute responsibility.
Commissioning Underfloor Heating in Screed
Commissioning of the screed is done during curing, not immediately after screeding.
Correct commissioning:
- Increases flow temperature gradually
- Runs in staged cycles
- Reduces internal stress in the screed
Rapid heat input results in cracks and poor bonding.
Underfloor heating and screed must be treated as one system, not two separate trades.
Next Level Underfloor Heating and Screed Solutions
Next Level manage testing, screeding coordination, and commissioning as a single process.
👉 Use the contact page to ensure your UFH system is tested and commissioned correctly before screeding
🏆 Trusted by 100+ Scottish property owners | 5.0★ on Google
* 10-year installation guarantee included on all screed projects *
Wendy Howe, ⭐️⭐️⭐️⭐️⭐️ Google Review:
“I was recommended to contact Next Level Underfloor heating when I found a leak from the pipes leading from the manifold. Alan was able to pop round on his way home and spent time sourcing the leak and solving the issue. I would highly recommend this friendly company for their speed, courteous manner and efficiency. Thank you.”
Common Problems: Cracks, Delays, and Poor Heat Output
It is a fact that underfloor heating failures are almost never caused by pipes. These poor designs originate from bad screed design or a lack of proper coordination.
Cracks in Screed With Underfloor Heating
Cracks usually form due to:
- Shrinkage
- Incorrect mix ratios
- Excessive thickness
- Rapid drying
Movement joints and reinforcement reduce the risk, but they do not make up for a lack of good preparation.
Small surface cracks are common. Structural cracks signal deeper problems.
Underfloor Heating Screed Cracking Causes
High-risk triggers include:
- Force drying
- Heating too early
- Poor curing conditions
- Incorrect depth over pipes
Once it cracks, the heat transfer from the screed is wasted.
Poor Heat Output After Installation
Poor performance has been attributed to the heat source. In fact, it is the screed layer that generally causes this.
Common causes include:
- Excess screed depth
- Air gaps around pipes
- Poor pipe coverage
- Incompatible screed type
When the screed design is poor, heat doesn’t reach the floor surface.
Why Screed Quality Matters More Than Pipe Layout
And even the best, properly spaced piping layout is of little value if the screed does not transfer heat well.
Screed must:
- Fully surround pipes
- Maintain consistent depth
- Match the heat source
This is particularly true for heat pump systems that use low flow temperatures.
If your system shows uneven heating or cracking, the issue often lies in the screed, not the boiler or heat pump.
Next Level Underfloor Heating and Screed Solutions
Next Level diagnose UFH and screed issues together to identify root causes.
👉 Use the contact page to assess screed-related heating problems before replacing equipment
🏆 Trusted by 100+ Scottish property owners | 5.0★ on Google
* 10-year installation guarantee included on all screed projects *
Donald Martin, ⭐️⭐️⭐️⭐️⭐️ Google Review:
“Thanks to Gordon and the team for a great job installing the pipe work for our underfloor heating, neat and tidy job done on time with no issues. Gordon kept me well informed of the work taking place and asked me any relevant questions before doing anything. I would highly recommend. Thanks Donald”
Best Screed Choice by Scenario (Underfloor Heating Focused)
There is no one-size-fits-all screed. The ideal screed for underfloor heating depends on how the building will be used, how heat will be generated, and what type of flooring it has.
New Build Homes
The most flexibility with your design will come from a new build.
In most cases, the best option is:
Liquid screed over water-based underfloor heating
This works well because:
- You strategise the floor build-up from the beginning
- Insulation levels are high
- An open area requires even heat distribution
Thinner coverage, quicker heat transfer, and long-term stability are all aspects of liquid screed.
If you are planning UFH from the design stage, screed choice should be locked in alongside pipe spacing and heat loss calculations.
Next Level Underfloor Heating and Screed Solutions
Next Level aligns screed depth, pipe layout, and heat source before installation begins.
👉 Use the contact page to confirm the right screed specification for your new build UFH system
🏆 Trusted by 100+ Scottish property owners | 5.0★ on Google
* 10-year installation guarantee included on all screed projects *
G Gigi, ⭐️⭐️⭐️⭐️⭐️ Google Review:
“We had underfloor heating installed this week, and I can’t speak highly enough of Alan’s work. From start to finish, he was professional, punctual, and incredibly knowledgeable. He took the time to explain the entire process, answered all our questions patiently, and made sure everything was done to the highest standard. The quality of the installation is excellent — neat, efficient, and clearly done with care and expertise. Alan and his team were also a pleasure to have around — friendly, respectful, and trustworthy”
Renovations and Extensions
Renovation projects come with limits.
Common constraints include:
- Restricted floor height
- Existing thresholds
- Mixed floor structures
In this scenario, the best screed choice is usually determined by the depth available.
Typical solutions include:
- Reduced-depth liquid screed
- Modified sand and cement screed
- Dry systems without screed
The incorrect screed selection here results in slow response times or uneven heating.
Renovation UFH systems need careful depth control to avoid heat loss and long warm-up times.
Next Level Underfloor Heating and Screed Solutions
Next Level assess existing floors before recommending screed or dry alternatives.
👉 Use the contact page to check whether your renovation floor can support screed-based UFH
🏆 Trusted by 100+ Scottish property owners | 5.0★ on Google
* 10-year installation guarantee included on all screed projects *
Grange Quarry, ⭐️⭐️⭐️⭐️⭐️ Google Review:
“We have worked with Alan & Gordon in the early days of their business getting started. Over the last 2 years we have worked with them on some fantastic jobs. This varying from commercial to residential properties. They have both been an absolute pleasure to work with. We are never hesitant to pass on their details to our customers as we believe they offer a 5* service. Their knowledge and capability is next to none. Thank you for using us and show casing the material we supply to such a high standard.”
Heat Pump Systems
The system is designed for low temperatures, so heat pumps can easily be included. System efficiency is determined based on screed selection.
The ideal screed for heat pumps is a wet or liquid screed, allowing units to be fully encapsulated within the pipework system.
This allows:
- Lower operating temperatures
- Even heat distribution
- Reduced cycling
Heat pumps have to work harder when a trowelled-on, thick, or ineffective screed is in place.
Screed design is critical when underfloor heating is paired with a heat pump.
Next Level Underfloor Heating and Screed Solutions
Next Level design UFH and screed systems to match heat pump output limits.
👉 Use the contact page to confirm your screed specification before installing a heat pump
🏆 Trusted by 100+ Scottish property owners | 5.0★ on Google
* 10-year installation guarantee included on all screed projects *
Reuben Welch, ⭐️⭐️⭐️⭐️⭐️ Google Review:
“Absolutely excellent service from Alan, Gordon and Ryan, right from initial visit and advice. They prepped the pre-insulated 180sqm floor over multiple rooms and fitted all the heating pipe and manifold in two days. They pumped in the Cemfloor screed on third morning and it was all done in under three hours. Amazingly neat job, super flat finish, hard enough to walk on after 24hrs (despite being mid February and quite cold). Highly recommended and stress free!”
Timber Floors and Upper Levels
And timber floors don’t respond the same way concrete does.
Key issues include:
- Movement
- Weight limits
- Deflection
In these situations:
- Dry screed boards
- Low-profile UFH panels
may replace wet screed.
Performance is a little down on full-screed systems, but with proper design, good heat outputs can be achieved.
Timber floors require a balance between structure, heat output, and response time.
Next Level Underfloor Heating and Screed Solutions
Next Level design UFH systems that respect timber floor limits without overloading the structure.
👉 Use the contact page to review UFH options for timber or suspended floors
🏆 Trusted by 100+ Scottish property owners | 5.0★ on Google
* 10-year installation guarantee included on all screed projects *
Fiona Peron, ⭐️⭐️⭐️⭐️⭐️ Google Review:
“Next Level recently installed underfloor heating pipes and screed to our self-build. After a number of frustrating and unsatisfactory dealings with other trades people, it was such a pleasure to deal with a professional, efficient and friendly company.”
High Heat-Loss Properties
Underfloor heating requires a higher output capacity in older homes or poorly insulated buildings.
In these cases:
- Screed thickness must support the heat output
- Pipe spacing must tighten
- Heat source capacity must increase
It’s also worth remembering that good insulation is far more important than the exact type of screed, as it is this that will be responsible for spreading heat evenly.
Screed cannot compensate for high heat loss without proper system design.
Next Level Underfloor Heating and Screed Solutions
Next Level assess heat loss before finalising screed depth or UFH layout.
👉 Use the contact page to review UFH options for timber or suspended floors
🏆 Trusted by 100+ Scottish property owners | 5.0★ on Google
* 10-year installation guarantee included on all screed projects *
Tarun Dalal, ⭐️⭐️⭐️⭐️⭐️ Google Review:
“Next Level Underfloor Heating and Screed Solutions have been using our Cemfloor product for many years, and we can confidently say they provide an outstanding service. Their team is highly skilled, professional, and always goes above and beyond to deliver top-quality results.”
How to Choose the Right Installer for Underfloor Heating and Screed
Underfloor heating problems arise on many sites due to poorly coordinated trades.
Why Separate UFH and Screed Teams Cause Issues
When UFH and screed are handled separately:
- Responsibility becomes unclear
- Pressure testing may be skipped
- Screed depth may vary
- Commissioning steps are missed
- Each issue reduces performance.
Single-System Responsibility Matters
The safest approach is a contractor who:
- Designs the UFH layout
- Specifies screed type and depth
- Manages pressure testing
- Oversees commissioning
This will close the gap between design and execution.
Questions Homeowners Should Ask
Before scheduling any installation, ask:
- Who specifies screed thickness for the UFH system?
- Will the pipes stay pressurised during screeding?
- Who controls commissioning after curing?
- How is heat output calculated?
Clear answers signal proper system ownership.
Underfloor heating and screed work as one system. They should be designed and delivered together.
Next Level Underfloor Heating and Screed Solutions
Next Level take responsibility for UFH performance from design through to commissioning.
👉 Use the contact page to review UFH options for timber or suspended floors
🏆 Trusted by 100+ Scottish property owners | 5.0★ on Google
* 10-year installation guarantee included on all screed projects *
David Middlemiss, ⭐️⭐️⭐️⭐️⭐️ Google Review:
“It is a rare thing these days to find such a company that takes ALL of the stress away from the customer and puts your mind at ease. Our second fix joiners and electricians were very impressed especially with the work ethic, speed and quality of workmanship. We would not hesitate to recommend Gordon and the guys to anyone who wants UFH installed.”
Frequently Asked Questions
Most systems require:
• Liquid screed: 20-30mm above pipes
• Sand and cement screed: 50mm-65mm or more above pipes
Precise depth will vary depending on pipe diameter, load, and source of heat.
Yes. It’s about heat transfer, and liquid screed transfers it better AND supports lower flow temperatures.
No, there are dry systems, but screed provides better heat spread and stability where space and structure allow.
No. Force drying damages the screed.
Heating should be gradual during curing; otherwise, cracking and internal stress will occur.
Yes. The result of shrinkage or over-rapid drying, and of depth not correctly supplied with concrete, is cracking. If your curing and commissioning are right, the risk will be low.
Conclusion: The Best Screed Is the One Designed With Your UFH System
Screed is not just a surface layer. It is a working part of the heating system.
The best screed for underfloor heating depends on:
- Heat source
- Floor structure
- Thickness limits
- Drying time
- Heating demand
Design decisions matter more than materials alone.
When screed and underfloor heating are designed together, systems heat evenly, respond predictably, and last longer. Next Level provides expert design and installation services in Glasgow, Edinburgh, and surrounding areas to ensure optimal performance and longevity.
If you are planning underfloor heating and want the screed specified correctly from the start, the next step is expert design review.
Next Level Underfloor Heating and Screed Solutions
Next Level assesses heat loss, floor build-up, and system layout before installation begins.
👉 Use the contact page to get clear guidance on UFH and screed installation before work starts
🏆 Trusted by 100+ Scottish property owners | 5.0★ on Google
* 10-year installation guarantee included on all screed projects *