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Subfloor preperation

It is all in the preparation

With correct subfloor preparation, your Designflooring installation will have a perfect finish and long-lasting result to complete your project. As well as fitting within requirements of BS 8203, DTU 53.2, DIN 18365 (Teil C) or other applicable National Standards and Building Codes for the installation of Resilient Flooring, we recommend installing your Designflooring in accordance with the current installation guide.

Prior to starting an installation, it is important to carryout checks and confirm the existing subfloor is level/flat, free from adhesive residues, dust and debris. In certain cases, it may be necessary to carryout mechanical preparation. An application of a smoothing & levelling compound may be required to facilitate the installation of Designflooring. This applies to Gluedown and Looselay formats, whereas rigid core products may require localised remedial work only.
For wood based subfloors, we recommend overlaying the existing floor with a minimum 5,5mm flooring grade plywood. The Plywood used should be manufactured to EN 636: 2 specification. Plywood joints should then be smoothed with an application of skim coat or a full coat of a suitable smoothing compound.
underfloor heating 
Prior to commencing an installation, it is vital that the UFH (underfloor heating) system used has been thoroughly cycled through the commissioning phase.

All formats of Designflooring can be installed onto UFH (underfloor heating), both electric and water borne systems. It is essential to ensure the maximum contact temperature never excees 27 degrees c.

Please refer to the installation guide for each format.



 Is your floor dry enough to cover?

It is vital to check for moisture and establish if your subfloor is dry or damp.

  • With loose lay and rigid core formats, you can install on floors up to 95% RH (Relative Humidity), allowing the floor to be installed much earlier in the project. They are ideal when the subfloor is still drying out in new build accommodation and community living schemes.
  • For gluedown, subfloor moisture readings must be below 75% RH. If readings are higher, a surface applied damp proof membrane may be required.
Once the subfloor has been appropriately prepared and a smooth surface achieved, you can confidently begin to install another stunning Designflooring.

Do you have a question for our technical team? Call us on 01386 820104.