TARARA GUIDE

Is Underfloor Heating Worth It?

What underfloor heating actually is

Electric underfloor heating is a thin heating element laid over the substrate and set into the adhesive bed, directly under your tiles. A thermostat runs it on a timer, so the floor is warm when you want it — first thing in the morning, say — and off the rest of the time. Because it sits under the tiles, it’s completely invisible and takes up no space: no radiator on the wall, no vents. Tiles are the ideal surface for it, because they conduct and hold heat well, so the floor warms evenly and stays warm.

The two costs to weigh up

• The cost to install. Because the element goes in as part of the tiling job, the extra cost is mostly the heating system itself plus the labour to lay it — not a whole separate project. That’s why timing matters so much (more below).
• The cost to run. Electric underfloor heating in a bathroom is a small area, and run on a timer for the times you actually use the room, it’s an inexpensive luxury rather than a heating bill. Left on all day it costs more — but that’s not how most people use it. We’ll talk you through what’s realistic for your space rather than quoting a number that sounds good but isn’t true for your floor.

The reason we split them out is that people often lump the two together and talk themselves out of it on a vague sense that heating is expensive. In practice the install is a known, one-off line on your tiling quote, and the running cost stays yours to control with the timer. Once both are on the table as clear numbers rather than a worry, the decision tends to make itself.

Why timing is everything

This is the single most important thing to understand: underfloor heating has to sit beneath the tiles, so it can only go in while the floor is being tiled. Adding it to a floor you’ve already tiled means lifting the tiles first — so the honest advice is simple. If you’re tiling or re-tiling a bathroom or kitchen floor anyway, that’s the moment it’s genuinely cost-effective. If your tiles are new and sound, it’s usually not worth pulling them up just to add heating.

Marko’s tip: “Nobody adds underfloor heating twice. It goes in once, with the tiles, or it means ripping up a perfectly good floor later. So if there’s any chance you’ll want it, the time to decide is when we’re quoting the tiling — not two winters down the track. It’s a small add-on during the job and a big job on its own afterwards.”

Where it’s worth it — and where it isn’t

Underfloor heating earns its place in some rooms more than others:

• Bathrooms and ensuites — the classic case. Bare feet, cold tiles, first thing in the morning: this is exactly the problem it solves, and it’s where most people say it’s worth it.
• Kitchens — the room you stand in most, often on a hard tiled floor. Warm underfoot makes a real difference in winter.
• Living and entry areas — even, invisible heat under large tiled floors, with no radiators or vents to work around.

Where it makes less sense: floors that aren’t tiled, rooms you barely use, or a floor that’s already tiled and in good condition. We’d rather tell you it’s not worth it for your situation than sell you something you won’t feel the benefit of.

It’s the timer that makes it cheap

A lot of the “is it expensive to run?” worry comes from picturing it on all day. In practice, the thermostat’s timer is the whole trick: you set it to come on for the hour or two you’re actually using the room — warm for the morning routine, off by the time everyone’s left the house — and that’s what keeps running costs low. A tiled bathroom floor also warms up quickly and holds its heat, so it doesn’t need to run for long to feel the benefit. Used this way, it behaves more like a small, scheduled comfort than a heater you leave running, which is exactly why most people find the running cost easy to live with.

The honest limitations

A couple of things worth being straight about. First, the final electrical connection of the thermostat to your power is completed by a registered electrician — we install the heating element and the tiling and coordinate the timing so there are no delays, but the wiring connection is their job, not ours. Second, underfloor heating warms the floor and takes the chill off a room; in a large or poorly insulated space it’s a comfort upgrade, not a replacement for your main heating. Used for what it’s good at — warm tiles in a bathroom or kitchen — it’s hard to beat.

Frequently asked questions

Is underfloor heating worth it in a bathroom?

For most people, yes. A tiled bathroom floor is cold underfoot, and underfloor heating turns that into one of the nicest parts of the room for a modest running cost on a timer. Because it goes in with the tiling, adding it during a bathroom project is far cheaper than retrofitting later.

Can I add underfloor heating to an existing tiled floor?

Not without lifting the tiles — the element has to sit beneath them. That’s why it’s best installed while the floor is being tiled anyway. If you’re re-tiling, now’s the time; if your tiles are new, it’s usually not worth pulling them up.

How much does electric underfloor heating cost to run?

It depends on the area and how you use the timer, but in a bathroom it’s typically an inexpensive luxury when run on a schedule rather than left on all day. We’ll talk you through what’s realistic for your floor.

Do you do the electrical work as well?

We install the heating element and the tiling and coordinate the job. The final connection of the thermostat to your power is completed by a registered electrician — we make sure the timing lines up.

What floors can it go under?

It’s ideal under tile and stone, which conduct and retain heat well — which is exactly why it pairs so naturally with a tiling project.