Python FL


Badge Fl 2

An ultra-rapid setting and drying, flexible self-levelling floor compound specially formulated using advanced binder technology and selected additives to provide an underlayment when a fast-track solution is required.

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Product Details

Apply from of 2 – 15mm in one application

Apply to ceramic, porcelain and natural stone tiles after 45- 60 minutes

Apply impervious floor coverings after 90 minutes

Excellent flow and self-levelling properties making it suitable for a wide range of both commercial and domestic applications

Suitable for use with underfloor heating systems including encapsulating electric elements

A genuine fast track solution

2 - 15 mm in one application

Technical Specification

Suitable Substrates
  • Sand/Cement Screed
  • Concrete
  • Plywood Overlay (6mm min)
  • Electric Underfloor Heating
  • Water/Wet System Underfloor Heating
  • Tile Backer Boards
  • Existing Ceramic, Porcelain and Natural Stone Tiles
  • Plasterboard
  • Existing Vinyl Tiles
  • Fibre Cement Sheet
  • Cement/Sand Render
  • Concrete Brick/Block

Before starting, all substrates must be clean, dry and strong enough to support the weight of the leveller and the final floor covering being applied. Remove all dust, dirt, oil, grease and other contaminants that may affect adhesion. Where traces of adhesive residue remain, these must be checked to ensure that they are not softened with water and that they are strong, sound and well adhered to the substrate in order to receive a levelling compound.

When installing moisture sensitive floor coverings, concrete or sand/cement screed should be confirmed dry by consistent moisture readings: <75% relative humidity (RH) or <0.5% residual moisture when tested in accordance with BS 8203. Where a structural damp proof membrane is not present or where rising damp and/or residual moisture gives moisture readings up to 98% RH, it is recommended to apply a liquid damp proof membrane such as a one-coat DPM prior to the application of Python FL.

Surface laitance should be removed from concrete and sand/cement screed surfaces prior to the application of Python FL.

Most substrates should be primed prior to the application of Python FL. Priming will stabilise the substrate, minimise the risk of pinholes forming, allow for the best flow properties and also prolong the working time of the product. For priming dilution rates please refer to Page 3 of this data sheet.

Mixing and Application

Mix by adding powder to water, approximately 4.8 – 5.0 litres of water to 20kg of Python FL. We suggest starting with 4.8 litres of water which can then be increased to a maximum of 5.0 litres if necessary. Do not exceed 5.0 litres of water.

Exceeding 5.0 litres of water per 20kg unit will result in water bleed and therefore extended drying times and a weakened mix.

Mix ideally with an electric paddle until you obtain a smooth and lump free consistency. When mixed allow to stand for 2 minutes and stir again before application.

Please note - once mixed, Python FL remains workable in the bucket for 10 - 15 minutes. Due to the Ultra-Rapid setting properties of Python FL, it is important to apply the mixed product without delay.

Pour a small quantity onto the prepared surface and trowel down lightly to a depth between 2 and 15mm. The use of a spiked roller is recommended immediately in order to remove entrapped air and smooth out flow lines. If you wish to build to a greater depth of 15mm, allow to dry and prime between applications.

Setting and Covering

Python FL will start to cure 30 minutes after application. The setting time will depend on site conditions/temperatures, it will be slowed by lower temperatures and accelerated by higher temperatures. If there is no air flow within site conditions, the drying time may be restricted. Python FL must be left to dry before applying the final decorative surface flooring. This is typically after 45 – 60 minutes for ceramic, porcelain and natural stone tiles and after 90 minutes for soft flooring such as vinyl. However, it can vary and can be faster depending on the choice of surface flooring.

The critical moisture content for the flooring in question must be observed. If in doubt, please call our Technical Helpline on 020 8778 9000, we will be happy to assist.

Health and Safety

Python FL contains cement. Irritant to respiratory system. Risk of serious damage to eyes, therefore avoid contact with eyes and prolonged contact with skin. Do not breathe dust. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. After contact with skin, take off immediately all contaminated clothing, and wash immediately with plenty of water and soap. Wear suitable gloves (e.g. cotton gloves soaked in nitrile) and eye/face protection. If swallowed, seek medical advice immediately and show this container or label. Keep out of reach of children. Low in chromates.

For further information refer to the Material Safety Data Sheet.

The information contained on this spec sheet is given voluntarily and in good faith. It is to the best of our knowledge true and accurate; however it may contain information which is inappropriate under certain conditions of use. The company cannot accept responsibility for any loss or damage due to inappropriate use or the possibility of variations of working conditions and of workmanship outside our control.

Technical Data

Screed classificationCT-C35-F10 to BS EN 13813; 2002
Working time @ 20°C10 – 15 minutes
Time to foot traffic @ 20°C30 minutes
Application thickness2 – 15 mm
Compressive strength N/mm2 (BS EN 13892-2)1 day > 20.0 7 day > 30.0 28 day > 35.0
Flexural strength 4.0 N/mm2 (BS EN 13892-2)1 day > 4.0 7 day > 7.0 28 day > 10.0
Coverage20kg will cover 4.2m2 at 3mm thickness
Flow properties using 30mm x 50mm flow ring135 – 150 mm
Minimum application temperature5°C
Shelf lifeStored correctly this product has a shelf life of 6 months
Pack size20kg
NoteAll work must be carried out in accordance with British Standard Code of Practice.


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