ThermoSphere Self-Adhesive Underfloor Heating Decoupling Membrane Mat – Sizes 1 m² & 15 m²

ThermoSphere Self-Adhesive Decoupling Membrane – Available in 1 m² Panel & 15 m² Roll

The ThermoSphere Self-Adhesive Decoupling Membrane is a premium polypropylene membrane designed to provide superior waterproofing, decoupling, and vapour management for electric underfloor heating systems. Featuring a strong peel-and-stick backing, this membrane ensures quick, hassle-free installation by securely adhering to substrates such as concrete, plywood, or screed without the need for additional adhesives.

Key Features

• Self-adhesive peel-and-stick backing for fast and easy installation, reducing labour time and improving accuracy
• Patented dimpled polypropylene membrane provides reliable decoupling to prevent tile cracking caused by substrate movement
• Waterproof and vapour-permeable membrane protects flooring from moisture ingress while allowing vapour to escape
• Secure cable fixing channel dimples hold heating cables firmly at set spacing for consistent heat output and energy efficiency
• Load-bearing capability certified by the Robinson test, suitable for heavy domestic and commercial foot traffic
• IP68 rated when installed with ThermoSphere heating cables, making it ideal for wet rooms and bathrooms
• Compatible with ThermoSphere TwistedTwin heating cables and full system accessories
• Available in a convenient self-adhesive 1 m² square panel and in a 15 m² roll to suit projects of varying sizes
• Approximate membrane thickness: 5.5 mm
• Lifetime warranty for long-term performance and peace of mind

Available Sizes

Installation Instructions

• Ensure the substrate is clean, dry, smooth, and free from dust or debris before application
• Peel off the protective film from the membrane’s adhesive backing
• Carefully position and press the membrane onto the substrate, smoothing out any air bubbles or wrinkles
• Cut to length as required using a sharp utility knife for a precise fit
• Insert ThermoSphere heating cables firmly into the dimple channels at the desired spacing
• Proceed with tiling or flooring installation directly over the membrane for enhanced decoupling and waterproofing
• Follow all recommended electrical and building regulations during installation

Why Choose ThermoSphere Self-Adhesive Decoupling Membrane?

This advanced membrane combines convenience and technology, offering a speedy peel-and-stick installation while delivering proven decoupling, waterproofing, and vapour management benefits. It is the ideal partner for ThermoSphere underfloor heating cables, ensuring your floors remain durable, comfortable, and protected from moisture and movement-related damage.

Choose the ThermoSphere Self-Adhesive Decoupling Membrane in 1 m² panel or 15 m² roll for a professional, hassle-free underfloor heating system installation.

Please note: Delivery times may vary depending on location, with specific details outlined below.

Standard Delivery

UK Mainland 

• Delivery Time: 2–4 working days
• Free Delivery on all orders

Express Delivery

UK Mainland

• Delivery Time: 1–3 working days
• Delivery fee of £15

Channel Islands

• Postcodes Covered: GY*, IM*, JE* 
• Minimum Order: £50
• Delivery Fee: £70

Northern Ireland, Offshore Territories & Scottish Islands 

• Postcodes Covered: BT*, HS*, KW, ZE
• Minimum Order: £50
• Delivery Fee: £35

Same Day Delivery 

• Eligible Postcodes:
  E*, EC*, N*, NW*, SE*, SW*, W*, WC*, HA*, UB*, EN*, IG*, RM*, KT*, SM*, CR*, BR*, DA*, TW*
• Minimum Order: £50
• Same Day Delivery Fee: £60
• Special Requests or Locations:
  For areas outside these postcodes or urgent quotes, please email orders@qualityheating.co.uk and we’ll do our best to accommodate.

Collections

Want to collect your order instead?You’re welcome to do so — just email us at orders@qualityheating.co.uk or message us via WhatsApp with your preferred collection time, and we’ll confirm the details.

Collection address: 284 Water Rd, Unit 9, London, HA0 1HX