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How to Install Underfloor Heating

installing underfloor heating
(Image credit: c/o Wunda Group)

Underfloor heating is on the wishlist of many self builders (and renovators) as they strive for the optimum in home comfort, energy efficiency and, in some cases, contemporary, minimalist design.

If you’re opting for underfloor heating in your home then it might be a job that you can tackle yourself.

Read our ultimate guide to underfloor heating then follow this step-by-step guide to installing a wet underfloor heating system.

Installing Underfloor Heating: Step-by-Step

installing underfloor heating

(Image credit: c/o Wunda Group)

1. The first step is to connect the floor heating pipe to the manifold.

installing underfloor heating

(Image credit: c/o Wunda Group)

2. After laying your insulation layer, you will need to begin to lay the pipe.

installing underfloor heating

(Image credit: c/o Wunda Group)

3. Secure the pipe to the insulation as you go using pipe staples.

installing underfloor heating

(Image credit: c/o Wunda Group)

4. Ensure you fix the pipe with the correct spacing to ensure optimal heat distribution.

installing underfloor heating

(Image credit: c/o Wunda Group)

5. Loop the pipe across the whole floor area. Use multiple loops for large spaces.

installing underfloor heating

(Image credit: c/o Wunda Group)

6. Prepare the screed (or opt for a ready-mixed version).

Before you pour the screed…

The pipes must always be pressure tested before the screed is laid. Equally important is to ensure the pipes are full of water while the screed is being laid so that if there is any damage it will be immediately obvious and can fixed before the screed laying is finished.

installing underfloor heating

(Image credit: c/o Wunda Group)

7. Carefully pour the self-levelling screed over secured pipework.

installing underfloor heating

(Image credit: c/o Wunda Group)

8. Stabilise the screed with a chemical spray.

installing underfloor heating

(Image credit: c/o Wunda Group)

9. Finally tamp the screed for a smooth finish.