Updated October 2026
“Can I have a wood floor with underfloor heating?” is one of the questions we get asked more than almost anything else. The short answer is yes, almost always. We’ve fitted over a thousand wood floors on underfloor heating systems, and in that time we’ve had two failures. In both cases the heating malfunctioned and effectively cooked the floor.
The tricky thing is that not every floor works with every system. So the better question is:
“Is the floor I want compatible with the system I want?”
And the answer to that is not always “yes”. Our nightmare scenario is a customer ordering a non-refundable, bespoke floor, and then discovering it isn’t compatible with the underfloor heating they’ve already had fitted. Oh dear. Here’s how to avoid that.
The short version
- Water-based systems set in a screed work with almost any engineered wood floor.
- Foil-based electric mats can only take a floated floor, so no herringbone or chevron.
- Overfloor systems need a sound, flat subfloor. Plank floated is the safest choice on these.
- Heat the whole floor, not part of it.
- Commission the system before fitting, and bring it back up gradually afterwards.
- Keep the floor at or below 27°C. Runaway systems cause failures, not a couple of millimetres of latex.
1. Done properly, it will be fine
Engineered wood, fitted correctly, is a stable product. It handles the gentle warmth of a well-run underfloor heating system without any issue, so don’t lose sleep over it. The thing that causes wood floor failures over underfloor heating is a runaway system. Most manufacturers recommend the floor surface stays at or below 27°C. The worst case we’ve seen had a floor reaching over 50°C.
2. Is the system water-based or electric?
Broadly, there are two types of underfloor heating: pipes (water-based) and wires (electric). We won’t go into which is better, but whichever you choose, you must check your fitting strategy works with it.
- Water-based systems set in a screed are almost always compatible with wood floors.
- Electric systems that sit on top of the structure are often designed for floating floors (planks that aren’t bonded to the subfloor). That’s fine for plank flooring, but parquet such as herringbone or chevron has to be glued down.
- Foil-based electric mats, like Warmup’s heating mat range, can’t be glued to. So they aren’t compatible with parquet.
- Some electric systems can take a glued floor. These are often the ones designed for tiles, such as Warmup’s StickyMat.
Always check with your underfloor heating company’s technical team that your floor can safely be fitted, before you order the system.
3. Is the system in the subfloor or on top of it?
A system set within a screed is more structurally sound than one that sits on top. To fit a floor safely, the subfloor needs to be level (less than 3mm deviation across a 2m rule) and sound, with no movement.
We regularly come across water-based overfloor systems, such as Wunda, that sit on top of the subfloor. They’re cheaper and easier to install than structural systems, but they’re often fitted loosely onto chipboard, so there’s movement and creaking.
- Plank, floated: normally it can be made to work, although you may get some bounce if the system isn’t flat.
- Parquet, glued: much harder. The manufacturer’s recommendation is a levelling compound across the system, then glue to that. But if the subfloor moves, cracks appear. Even if they don’t, it’s expensive, because the compound has to be a premium flexible product and laid deep to avoid cracking. You may think you’re saving money, but when the levelling bill arrives, you’ll think again.
If the subfloor isn’t structurally sound, you shouldn’t be fitting a glued-down floor. We now steer clients away from parquet on these systems and recommend plank, fitted floated. We also know some clients have their heart set on parquet and the system is already in. If that’s you, talk to us early.
4. Float or glue? Don’t over-engineer it
On a recent large project outside London, a very thorough contractor asked us the best way to fit the floor over his underfloor heating. Floated? Glued? Latex screed? How much latex? Which underlay? We went back to the manufacturers and suppliers involved, and found they don’t all agree. There’s no single industry consensus.
In the end, we recommended floating the floor on a good quality Duralay underlay, and we’re confident it’ll perform well.
One manufacturer recommended 8mm of latex screed before gluing. Would 5mm cause a failure? Or 3mm? In our view, almost certainly not. It’s worth thinking about the actual risk rather than following every specification to the letter. Otherwise costs rise very, very quickly, and you can end up where a wood floor is no longer viable. You can read more about floated, glued and nailed floors and choosing the right underlay.
5. Use a single heat source
Wood is a natural product. When it dries out it shrinks, and when it picks up moisture it expands. So underfloor heating needs to run under the entire wood floor, not just part of it, or one area will move more than the other.
The fix is a break in the floor covered with a door bar, but that doesn’t look great. Think it through when you design the system.
6. Commission the system before, and after, fitting
Before the floor goes down, most water-based systems need commissioning: the heating is gradually turned up, then back down. This almost always takes our customers by surprise (it’s odd that the companies fitting these systems rarely mention it, but hey, we’re just flooring guys).
You can’t fit a wood floor and then crank the heating up to maximum, because the timber reacts to the shock. Commissioning also helps dry the screed, which is another common fitting delay (more on that here). A couple of days before fitting, the system should be turned off, then brought back up gradually once the floor is down. Every system is slightly different, so follow your manufacturer’s guidance.
7. If you’re worried, fit a Fidbox
A Fidbox is a small device that sits under your floor and records temperature and humidity, essentially a black box recorder for your flooring. It’ll alert you if the floor goes over 27°C. In the worst case we’ve seen, the floor reached over 50°C. A Fidbox would have caught that early.
8. Speak to the technical teams
Almost every underfloor heating manufacturer has a helpful technical team. Before ordering your system, call them and check everything: the materials, the fitting strategy and how to commission it. The worst that can happen is you find out you’re on the right track. At best, they spot something your contractor, architect or project manager missed.
We’ve arrived to fit a floor and found something wrong with the heating more than once. That sets off a rubbish chain of blame and, ultimately, cost. We try our best to give great advice, but we’re not the project manager for your build, so make sure whoever is checks your final strategy. It’s also worth reading the six flooring terms and conditions you can’t ignore.
Underfloor heating and wood floors: FAQs
Can you have a wood floor with underfloor heating?
Almost always, yes. We’ve fitted over a thousand wood floors on underfloor heating and had two failures, both caused by the heating system malfunctioning and overheating the floor. The real question is whether the floor you want is compatible with the system you want.
What temperature should a wood floor reach with underfloor heating?
Most manufacturers recommend the floor surface stays at or below 27°C. Problems come from runaway systems: the worst case we’ve seen had a floor reaching over 50°C.
Can herringbone or parquet go over underfloor heating?
Yes, provided you create a surface you can glue to, because parquet has to be glued down. That rules out foil-based electric mats, which you can’t glue to, and we avoid gluing parquet to overfloor systems laid loosely on chipboard. Systems set in a screed are the safest choice.
Should a wood floor over underfloor heating be floated or glued?
Plank floors can be floated or glued. On a recent large project we floated the floor on a good quality Duralay underlay. Parquet such as herringbone and chevron must be glued, so check your heating system can take a glued floor before you order it.
Do I need to commission underfloor heating before fitting a wood floor?
Yes, for most water-based systems. The system is gradually turned up and then down before fitting, turned off a couple of days before the floor goes down, then turned up gradually afterwards. It also helps dry the screed.
Does underfloor heating need to cover the whole floor?
Ideally, yes. Wood shrinks as it dries and expands as it takes on moisture, so if only part of the floor is heated, that part moves more than the rest. The fix is a break in the floor with a door bar, which doesn’t look great, so plan the heated area carefully.
Planning a herringbone floor over underfloor heating? Our guide to laying a herringbone floor covers the subfloor prep.
Got a heating system in mind?
Bring the spec to our Hackney Road showroom, or book a video call. We’ll check it against the floor you want before anything is ordered.
