Thin Screed Products?

I’m Andy Parkin, Managing Director of the Multi-Award Winning Speed Screed. I’m here today to talk about thin screed products.

Thin Screed Products

When we are talking about thin screed products, we are looking at how thin the products can actually go in certain applications. So, we need to know what the construction is. How thin it will go will be determined, generally, by how the floor construction is made up.

Floor Construction

We are looking at three particular types of floor construction.

  • Bonded – the screed is bonded directly to the substrate.
  • Unbonded – a membrane is placed in between the structural substrate and the screed.
  • Floating construction – where insulation and, possibly, a membrane come in between the substrate and the screed.

Each one will allow for a different minimum depth, and if we look at each one separately.


When bonding, we are normally looking at using a bonding agent (primer). There may be some surface preparation that needs to be carried out, but we will not get into that right now, and will assume the substrate is suitable for bonding.

If you are looking at smoothing compounds, they will generally go directly onto a concrete substrate from a feather edge, so you’re looking at around about a 1mm thick. That would normally be with a primer.


When we are talking about unbonded, it would involve placing a membrane in between the substrate and the screed.  Unbonded over bonded will mean screed depths will need to increase.

Most smoothing products are not suitable laid onto membranes. Products start at 15 mm.

Floating Screed

Floating construction would be insulation and a membrane.

I hope that gives you an idea of thin screed products, and you can put it into context of what your particular substrate and build-up will be. If you do have any further questions, please get in touch.

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thin screed products

thin screed products