Underfloor Heating in Purley
Underfloor heating is the obvious answer in an extension or a kitchen where the floor is coming up anyway, and it frees the wall space a radiator would have taken. It only works well if the pipe spacing and the flow temperature are designed for the room rather than copied from the last job.
Covering about five miles from Purley, across the south London and Surrey border. Monday to Friday, 7am to 6pm. Saturday and Sunday, 8am to 5pm.
What is included
- Heat loss calculation for the room, which is what sets the pipe spacing
- Insulation checked underneath, because heating the ground is money gone
- Pipe laid and clipped out at the designed spacing, not eyeballed
- Manifold sized, fitted, labelled and sited somewhere you can reach it
- Blending valve or pump set so the floor runs at its own temperature, separate from the radiators
- Pressure tested, and left under pressure while the screed goes down
- Zone wiring and thermostats, wired or wireless
- Commissioned, balanced loop by loop, and the warm up curve explained
- As-laid drawing so nobody drills through a pipe in five years
Where underfloor heating is and is not the right answer
It is a genuinely better way to heat some rooms and a poor choice in others. We would rather tell you that at the survey than fit it and have you disappointed.
- An extension or a new kitchen floor. The best case. The floor is already coming up, the insulation goes in at the same time, and you get the wall space back.
- A bathroom. Works well, warms a tiled floor that is otherwise cold underfoot, and the room is small enough that it is a quick job.
- A well insulated room. Underfloor runs at a much lower flow temperature than radiators, which is efficient in a room that holds its heat and disappointing in one that does not.
- Retrofitting under an existing solid floor. Possible, but it means digging out and relaying, and the cost rarely stacks up against a properly sized radiator.
- A room you want warm quickly. A screed floor takes hours to come up and hours to cool down. It suits a room that is warm all day, not one you want hot for an hour in the evening.
- Under thick carpet and underlay. The floor covering is insulation. Put enough of it on top of the pipes and the heat stays under the floor.
What it costs
We give you a fixed price in writing once we have seen the job. These are the things that change the number, so you know what we will be looking at.
- The floor area and the number of loops. A kitchen extension and a whole ground floor are not the same job.
- Whether it is going into screed or between joists. Screed is more straightforward, a suspended timber floor is more work.
- Whether the existing boiler and manifold position can serve it, or whether we are running new primaries across the house.
- What the floor finish will be. Tile and stone suit it best, engineered timber needs a lower flow temperature, and thick carpet and underlay will fight it.
- Whether it is going in alongside a radiator system, which needs a blending valve so the two can run at different temperatures.
- One fixed price in writing after the survey, with the loop layout on it.
Ring 07947 909074 and we will give you a realistic range over the phone before anyone comes out.
How it works
Survey and heat loss
We measure the room, work out what it needs and check what is under the floor. That calculation decides the pipe spacing, and pipe spacing decides whether the floor is warm enough.
Design and quote
You get the loop layout, where the manifold goes, the thermostat positions and one fixed price.
Install
Insulation, then pipe clipped out and pressure tested. It stays under pressure while the screed or the boards go down, so any damage shows up immediately rather than in January.
Commission
Manifold balanced loop by loop, the blending valve set, thermostats paired and the system brought up slowly rather than all at once.
Handover
We show you how it is meant to be run, which is not the way a radiator system is run.
Who is doing the work
Every underfloor heating job is carried out by a registered engineer working under the following.
- Gas Safe RegisteredRegister number 915978
Where we cover
Underfloor heating we have done
Real work, real people. No stock.
Recent underfloor heating customers
Brilliant company - Steve and Charlie are knowledgeable, reliable, friendly and clean and tidy! Rare in most trades. Recommended to all my friends and family and will use again. Thanks for being amazing. Had major building work done and nothing was too much trouble, new boiler, new bathrooms, new water pipes.Frances20101
Had a rat problem at my elderly nans house & found the bath waste had a huge hole in it. Steve Came round at short notice , replaced it. Clean tidy great job at a very reasonable priceJamie Spencer
After being messed around by a different company, we were recommended Go Fix and we couldn't be happier with the work they have done. Friendly, clean and they turned up everyday on time which seems hard to come by these days.Brad
Common questions
Is underfloor heating cheaper to run than radiators?
In a well insulated room, usually yes, because it runs at a much lower flow temperature and the boiler condenses properly at that temperature. In a draughty, poorly insulated room it is not, and we will tell you that at the survey rather than after you have paid for it.
Can I put underfloor heating in without digging up the floor?
In an extension or anywhere the floor is coming up anyway, it is straightforward. Retrofitting under an existing solid floor means digging out and relaying, and the cost rarely justifies it against a correctly sized radiator. Between existing joists is a middle option we will look at if the boards can come up.
How long does underfloor heating take to warm up?
A screed floor takes several hours to come up to temperature and just as long to cool down, so it is run steadily rather than switched on and off. A system laid between joists responds faster. Either way we set the controls up for how you actually use the room and explain it at handover.
Can I have underfloor downstairs and radiators upstairs?
Yes, and it is the most common setup we fit. The two need to run at different flow temperatures, so the underfloor circuit gets its own blending valve and pump on the manifold. It is not something you can bolt on without that.
What floor coverings can I put over it?
Tile and stone are the best because they conduct the heat well. Engineered timber is fine at a lower flow temperature, and the manufacturer will state a maximum surface temperature you have to stay under. Thick carpet and underlay work against it, so check the tog rating before you buy.
What happens if a pipe leaks under the floor?
It is rare, because the loops are laid in continuous lengths with no joints buried in the screed, and we leave the system under pressure while the floor goes down so any damage from another trade shows up straight away. We also leave you an as-laid drawing so nobody drills into a loop later.
Do you fit underfloor heating in bathrooms?
Yes, and it is one of the jobs it suits best. A tiled bathroom floor is cold underfoot and a towel radiator alone rarely heats the room properly. If we are already fitting the bathroom it goes in at first fix with everything else.
Request a written quote
Tell us about the property and we will come and look before giving you a price. The survey costs nothing.
Book an underfloor survey
Ring us for the quickest answer, or leave three details and we will call you back.