Python FR


Badge Fr 2

Polymer modified, flexible, cement based floor and wall tile adhesive.

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Product Details

Flexible, rapid setting formula

Walk on and grout after 3 hours

Internal and external use

Suitable for natural stones, ceramic and porcelain

Suitable for use on plywood overlay

No additives required

Can be used with underfloor heating systems

Unaffected by frost after setting

Technical Specification

Suitable Tiles
  • Ceramics
  • Porcelain
  • Marble
  • Travertine
  • Limestone
  • Slate
  • Granite
  • Terracotta
  • Mosaics
  • Quarry
Suitable Substrates
  • Sand/Cement Screed
  • Concrete
  • Plywood Overlay (15mm 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
  • Tile Backer Boards
  • Concrete Brick/Block
  • Flooring Grade Asphalt & Bitumen*

*Prime with Python PR


Python FR is suitable for use with natural stone tiles but suitability with very porous and sensitive natural stone tiles must be tested prior to use. Confirmation of suitability should be sought from the supplier of the natural stone tiles or alternatively, please contact our technical department on 020 8778 9000, we will be happy to assist.


Before starting, all substrates must be clean, dry and strong enough to support the weight of the tiles, tile adhesive and grout. Remove all dust, dirt, oil, grease and other contaminants that may affect adhesion.

Mixing and Application

Only mix small quantities at a time until you have become accustomed to the fast setting nature of the product. Always mix powder to water and mix to a smooth and lump free consistency. As a guide for powder to water ratio, 20kg of powder requires approximately 4.4 - 4.6 litres of water. Never add water after initial mixing, as this will impair the strength of the adhesive. Product that has started to set must be discarded.

NB. When fixing large format tiles, natural stone tiles and tiles that have deep studs on the back, you must skim the back of the tile with a thin 1 – 2mm layer of adhesive, this is referred to as back buttering. This will significantly improve the bond strength.

On a flat, even substrate where dry conditions exist, apply adhesive to the substrate as a thin floated coat at a uniform thickness of 3mm – 6mm and then rib / comb out using a suitable notched trowel. Where substrate conditions do not allow thin bed fixing, Python FR can be applied to a maximum bed thickness of 12mm. Ensuring the adhesive is still moist, bed tiles into adhesive using a twisting action ensuring full coverage of adhesive between tile and substrate. Regular checks should be made to make sure that there are no voids in the adhesive bed.

NB. When fixing tiles externally or in areas subject to prolonged or permanent wet conditions, you must ensure that you achieve 100% adhesive coverage between tile and substrate.

Clean surplus adhesive from the tiles and joints as soon as possible as set adhesive will prove very difficult to remove later.

Clean tools after use with water.

Setting and Covering

Do not start grouting until the adhesive has set. This time can vary depending on temperature and site conditions. Impervious surfaces may extend the set time. In ideal conditions grouting can begin after 3 hours. If you are tiling an area of limited movement or underfloor heating, you must use a flexible grout such as Python CS. If you are unsure with any of our instructions please call our Technical Helpline on 020 8778 9000, we will be happy to assist.

Health and Safety

Python FR Adhesive contains cement. Contact with moisture or gauging water sets off an alkaline reaction which may cause skin irritation and/or caustic burns to mucous membranes (e.g. eyes). 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

Standard ConformityConforms to BS EN 12004 C2 FT
Bed Thickness3mm – 12mm
Coverage20kg will cover approximately 5–6 m² at 3mm bed application
Open Time/Working TimeApproximately 30 minutes at 20ºC
Before GroutingApproximately 3 hours depending on temperature and substrate. The set time will be increased by lower temperatures and reduced at higher temperatures. * Tiling onto an impervious substrate with a non-porous tile will increase the set time.
StorageStore unopened, clear of the ground in cool, dry conditions
Shelf lifeStored correctly this product has a shelf life of 6 months
Pack sizes20kg
NoteAll work must be carried out in accordance with British Standard Code of Practice for floor and wall tiling BS5385.


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