Decoupling mats: What are they?
A decoupling mat is normally a reinforced plastic mat. It is laid on top of the substrate on which you intend to lay tiles. Fix and the tiles themselves are then placed on the carpet. Since the carpet is not attached to the substrate, but is simply placed on it, it is “detached” from it. Even if the substrate should move or have cracks… The carpet holds the tiles together, preventing tension in the joints or ceramics.
Why is the decoupling mat useful?
The release mat basically means that you can lay tiles on just about any surface, as long as it is smooth and nice. It doesn’t matter if it’s an old plastic mat that can otherwise be difficult to get a hold of. Substrates that were previously classified as impossible can once again be tiled with a release mat! It can be cracked substrates, contaminated substrates, moving substrates, mixed substrates, etc.
Another advantage of uncoupling mats is that it becomes much easier to replace tiles when you get tired of the style. Just drag out the entire carpet with all the old tiles on it and lay a new carpet instead of demolition work that costs both time and money.
What are the downsides?
The mat is made of Polyethylene (PE), which is a type of plastic and there are some today who strive to reduce the amount of plastic in their homes.
Since the decoupling mat builds a few millimetres, it should be included in the calculations if the levels are sensitive.
Of course, it also adds an extra cost to buy another product. Whether that cost can be offset by reduced waiting time and working time depends on your circumstances!
Overall, however, the release mat is a great aid to all today’s tilers who want to reduce the risk of their work going to waste because the substrate is not sufficiently stable or suitable for tiling!
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