Thermosphere Econofix Flexible Tile Adhesive - Grey - FTA-20-01

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RRP £42.98 save 14%


In stock

Receive on Tuesday 31st March - Order by 3pm Monday and select Next Day (L)

Standard Delivery (L) (2-4 days) - FREE *; Next Day (L) - £12.99

Free delivery to most of the UK. More delivery information ›

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Product Specification

Product Code FTA-20-01
Global Trade Item Number 5060291062403
Type Underfloor Heating Accessories
Brand Thermosphere
Style Modern
Popular Features Slimline Design


Thermosphere Econofix Flexible Tile Adhesive - Grey

Designed to use with electric underfloor heating, this flexible tile adhesive from Thermosphere will cover your cable or mat underfloor heating system and fix your tiles to the floor. Using an eco friendly formula, this adhesive is anti-stain and water mark proof making it perfect to use in bathrooms. You can also use it to fix your insulation boards to your substrate prior to laying your underfloor heating system.

It's super flexible, can be used to fix porcelain, ceramic and natural stone tiles, and will be ready to walk on and grout after only 3 hours. It has an improved slip resistance and can create a 3 - 12mm bed depth. You can also use it to fix an insulation board prior to laying your underfloor heating.

• 20kg of flexible tile adhesive to cover your electric underfloor heating system and fix your tiles in place
• Can also be used to lay your insulation boards prior to laying your underfloor heating
• Eco friendly
• Highly flexible - S1 flexible to EN 12004
• Rapid set properties - groutable and walkable within 3 hours
• Creates a bed of 1 - 20mm of adhesive
• Coverage: 6.25 - 7.5m2
• Water resistant so suitable for bathrooms, wet rooms, steam rooms and swimming pools
• Before tiling, your substrate must be clean, dry and free of dust, dirt, oil and grease - see recommended extras for a suitable primer

Additional information:
• Conforms to BS EN 12004 C2 FT S1
• Open/working time: approximately 30 minutes at 20°C
• Before grouting time: approximately 3 hours depend on the room temperature and substrate. It will increase with lower temperatures and reduced at higher temperatures.
• Tiling onto an impervious substrate with a non porous tile will increase the set time
• Shelf life: 6 months if stored correctly
• Suitable for: ceramic, porcelain, marble, travertine, limestone, slate, quartz, granite, composite, terracotta, mosaic and quarry tiles
• Substrate suitability: sand/cement screed, concrete, plywood overlay (minimum 12mm), chipboard overlay (minimum 18mm), electric underfloor heating, wet underfloor heating, tile backer boards, econoboard coated and uncoated insulation boards, tile on tile, flooring grade asphalt and bitumen, andradite screeds, plaster/plasterboard, fibre cement sheet, cement/sand render, concrete brick/block, existing vinyl tiles
• Not suitable for T & G floorboards, floating floors, steel/metal surfaces, fibreglass and green screed.
• Instructions: Mix in a clean mixing vessel with between 4.8 - 5 litres of cold clean tap water until a smooth creamy consistency is achieved using a suitable drill with whisk attachment. Mix at a slow speed for a minimum of 2 minutes to ensure that all ingredients (polymers, retarding agents etc.) are dispersed thoroughly throughout the whole mix.

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Delivery Costs

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COVID-19 Update (24/03/20)



  • Our website remains open for orders
  • Our warehouse and courier partners are operational
  • Our customer service and sales team are working from home and are available via telephone, email and live chat


A message from Elliot Lees-Bell, Managing Director. 

Firstly, our thoughts are with all those who are affected by COVID-19.

Our customer service and sales teams are now working from home and will be on-hand to answer any questions and help with your order. Our warehouse remains open and our team are practising high levels of hygiene and cleanliness to protect their own wellbeing and to safeguard our customers. 

All deliveries are continuing as normal and we are in constant contact with our delivery partners to ensure that the safest practices are being followed. They'll sign on your behalf upon delivery, where possible sanitise hands prior to arrival and handling goods, and keep a sensible distance at all times.

The future is a little uncertain. There's likely to be some delays with delivery and stock arriving from our manufacturers, but we are still taking orders as usual. Products that are shown as ‘In Stock’ on our website are available to ship right away. At the moment, products with an estimated lead time (e.g. 3 - 7 days) will be fulfilled, but may take a little longer than usual.

As the next few days and weeks unfold we might have to take additional steps to protect both you and our staff - rest assured, we'll keep you updated along the way.

Thank you for your patience and support, and from all of us at Only Radiators we hope you stay safe and healthy.


​How long will my delivery take?

Items in stock and ready for immediate dispatch display ‘In Stock’. Other items show the estimated delivery time, such as 1-2 or 2-4 working days. This information is given to you on each product page throughout the website, as well as in the basket prior to checkout, and in the checkout process itself.

How much does delivery cost?

  • Free delivery on UK mainland orders. Area exclusions and surcharges apply*. We also offer next day and weekend services on certain items starting at £7.99.
  • Items that are not available for next day or premium deliveries will display an estimated lead time displayed in working days (Mon-Fri). Please note that when ordering multiple items, the longest estimated lead time shown would apply to the complete order.

    * Additional charges will usually apply to some areas of Northern Scotland and Scottish Isles, Channel Islands and Northern Ireland, as well as to some areas of mainland UK for very large or fragile items that are sent by pallet.

Next day, weekend & time-specific deliveries

If an item is 'In Stock', you will also be able to choose a number of other delivery options during the checkout.
For our other items that show a delivery estimate, you will not be able to choose next day or timed services. We aim to deliver the item within the advertised timescale. 

International delivery

We deliver small items (valves, brackets, hooks, heating controls etc.) to most of Europe. You will be informed if any of the items in your basket are not able to be sent to your country during the checkout process.
If your country is not listed, or if you want to order a larger item, we may still be able to help. Please call us on 01202 612808.

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