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Advice on Confidently Laying a Stone Floor -Water-Fed Underfloor Heating with Success

Advice on Confidently Laying a Stone Floor -Water-Fed Underfloor Heating with Success

The following illustrates the process of laying a natural stone floor onto a new screed with a water-fed heating system.

If you haven’t previously had a natural stone floor laid then you probably have questions regarding the process and the products that you will need to achieve a great finish.

One of our lovely customers recently had our Lonsdale Grey slate stone floor laid in their new extension and the tiler (Wayne Davidson) was good enough to take images throughout the process which allows us to clearly illustrate the products that you will need.

Step 1

Once the new screed has cured for the required amount of time your tiler can begin work.  We always recommend you use a professional tiler to ensure the stone floor is laid correctly to prevent any future issues.

The first step is to make the stone floor completely level with the use of a self-levelling compound. You may wonder why you would need to do this on a new screed but as the screed dries out and settles it can shift slightly causing unevenness.  Use of a self-leveller in problematic spots ensures that there will be a lovely professional finish.

Step 2

When a new screed is combined with underfloor heating we advise to use a  Mapetex decoupling membrane. This is because the floor is susceptible to movement and the addition of Mapetex means that should the floor shift sideways slightly it will not cause your floor tiles to crack. It does add a bit to the cost of your installation, but protects your investment for the future!

Mapetex Decoupling membrane is laid.

Step 3

After installing the Mapetex, the prep is done and now you can tile. This is when the process gets exciting as you start to see the lovely tiles that you have chosen get put in to place.  With this project a Keraquick adhesive with a latex additive has been used to ensure that the tiles are laid with the most flexible option – again to allow for a bit of movement. You can see here that the preparation of the floor previously has paid off with a beautifully level floor. At this stage the tiler will do a first coat of sealant before grouting. The tiles are sealed before grouting so that the grout doesn’t stain the tiles.

Step 4

And now is when the floor really comes together… the grout is added to the floor.  We recommend Mapei Ultracolour grout which is great for nearly all tiling jobs. The wide selection of colours means you can have the finish just how you want it.  Once the grout has dried the final application of sealant is applied and the floor is complete!

We hope this helps you to understand a little more about tiling on to a new underfloor heating system. No two jobs are the same however so do get in touch if you would like to know the products and preparation required for your floor, we are happy to help!

Our customer has also chosen to tile their stove alcove in the same material but as strip cladding. The cladding works well in a wide variety of spaces including hearths, shower enclosures, or feature walls. The slate always looks effective and makes an impact.

We love that the hearth material has been chosen to contrast with the grey tiles. We made this from Premium black polished granite and think it looks fantastic in this space.

Thank you to Wayne Davidson for doing such a fantastic job and for sending the images to us. And of course to our customer for having such good taste 🙂

Here are a few more images of the finished look:

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