Gypsol TimBRE

We formulated Gypsol TimBRE, a multi-purpose screeding solution,  especially for use over timber substrates

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Alan Jackson

Alan Jackson

Area Technical and Specification Manager Gypsol

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Where to use Gypsol TimBRE?

Gypsol TimBRE is a free-flowing, and self-compacting screed which you can use in various applications including both commercial and domestic projects. Our customers use the product to produce a smooth, flat and level floor to form the subbase for subsequent floor coverings for internal floors in a large variety of constructions where they form the substrate using timber.

Our customers are specially trained screeders who pump the screed into place by using specialised equipment. Because our Gypsol TimBRE offers a concrete feel to a timber floor, it eliminates issues with creaking and imparts excellent acoustic and thermal properties to the floor.

Alternative Gypsol screeds

LKAB Minerals have formulated a range of Gypsol screeds which perform under different circumstances. Check the individual product pages for more information.

  1. Rapide; A self-compacting, self-smoothing, fast-drying floor screed
  2. Classic; Our general-purpose screeding system. The most commonly used material in our range.
  3. HTC; Gypsol HTC (High Thermal Conductivity) for use with underfloor heating and cooling systems.
  4. TS-15; An ultra-thin screed for bonded and un-bonded applications at a minimum depth of 15mm.
  5. TS-20; A thin screed suitable for bonded and un-bonded applications down to a 20mm minimum depth.
  6. XS; Extra strength material for use in heavy-duty applications, where loading is likely to be higher than usual.
  7. TimBRE; Specially formulated and tested for use in timber frame and over timber supported floors including acoustic conditions.
  8. Sureflo; Pre-blended product supplied in 25kg bags for mixing on site. Ideal where minimal quantities are required, or access for ready-mix lorries is not possible.
  9. Summit; Particularly fit for screeds pumped over very long distances or high buildings of 10 stories and above.
  10. Modular; Designed for use in modular construction to allow early movement of units, also for a lightweight steel frame and Lewis Decking.
Gypsol screed installation image 1

Gypsol TimBRE product details

We manufacture Gypsol TimBRE to exacting standards in quality-assured Readymix facilities throughout the UK. Besides, it is also available in specific locations from volumetric on-site mixing systems. The Gypsol TimBRE screed offers the user a simple and effective floor screeding solution for floating or unbonded floors over a timber substrate. You can do this in both full timber frame or masonry construction.  You should make the Gypsol screed from high-quality Gypsol anhydrite binder, specially selected sands and clean water.

Gypsol TimBRE benefits

Using Gypsol TimBRE will benefit your screed floor because of:

  • Rapid application
  • Eliminates creaky timber floors
  • Concrete feel to a timber floor
  • Allows lean construction
    • 18mm OSB or similar board supported by minimum 220mm deep I-Joists or similar at maximum 600mm centres and 4.8m clear spans.

Note: A structural engineer should always be consulted to ensure that the subbase is suitable to receive the added mass of the screed.

  • Thin Screed sections
    • 40mm Floating Commercial
    • 35mm Floating Domestic
    • 30mm Unbonded
    • 25mm cover to underfloor heating pipes
  • Fast drying
    • 28 days natural drying*
    • 13 days forced drying*

*Independently tested and based on 50mm depth at 20˚C and 60% RH. For your convenience, we have all the test data available on request.

You can also use the Gypsol TimBRE with our Gypsol Rapide fast-drying additive offering a drying time of just 14 days at 50mm depth.

  • Rapid commissioning of underfloor heating
    • Underfloor heating can be commissioned and run after only seven days
  • No reinforcement nor fibres required
  • No curing agents required
  • Low Carbon Footprint
    • Just 26.26kg per tonne of material manufactured saving up to 94% CO2 compared to a cement-based screed.
  • Fully self-compacting and high density
    • Offers 80kg/m2 density at just 40mm
    • Suitable for Acoustic Design
    • Robust Detail E-FT-4
  • Rapid return to service of work areas
    • Foot traffic after only 48 hours
    • Full loading after just seven days
  • Assured high strength
  • Minimum Ca-C35-F6

Packaging

LKAB Minerals Gypsol TimBRE screed is available from all readymix and volumetric screed producers who stock Gypsol Binder.

Gypsol TimBRE - Frequently Asked Questions

  • What is the minimal Gypsol TimBRE screed thickness my floor needs?

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    Gypsol TimBRE screed can be used either with or without insulation to the following minimum depths

    • 40mm Floating Commercial
    • 35mm Floating Domestic
    • 30mm Unbonded
    • 25mm Bonded
    • 25mm cover to underfloor heating pipes
  • How soon can I lay my floor coverings over Gypsol TimBRE screed floors?

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    Gypsol TimBRE screed dries naturally in around 28 days in right drying conditions. If you have underfloor heating, you can commission and run this to force dry the screed in which case it will be dry in just 13 days. Gypsol TimBRE screed dries by evaporation of residual moisture into the air above it. It is therefore important to ensure that you dry the screed in well-ventilated conditions to remove the moisture as it evaporates. It is equally important to ensure you carry out an appropriate moisture test to confirm the screed is suitably dried before applying floor coverings.

  • How strong does my substrate need to be?

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    Where you use Gypsol TimBRE over a timber structure supported on timber joists, a suitably qualified structural engineer should check the composition. Whether you place the screed into a new construction or renovate an old timber floor, the structure should conform to the following minimum requirements:

    • Timber joists should be a minimum of 220mm deep engineered I-Joists or similar.
    • You should place these joists at maximum 600mm centres
    • And you must have a maximum clear span of 4.8m.
    • The joists should be overlaid with a minimum 18mm OSB or similar board.

    When you use the screed in a renovation project, the timber floor is likely to be an older style construction using solid joists. Your structural engineer will be able to calculate the minimum depths and dimensions for these to verify that they will meet the performance requirements for a new floor.

    For your convenience, the Gypsol team have full test data available which can be downloaded from our website or via one of our technical and specifications team.