The ThermoSphere Peel and Stick Combined Set bundles the ThermoSphere Ultimate heating cable and a ThermoSphere self-adhesive decoupling membrane mat in one purchase — everything needed for a heated, decoupled, waterproof tile floor. The self-adhesive membrane requires no tile adhesive for fixing — peel, stick to flat plywood or OSB, route the Ultimate cable into the studs and tile over. Outputs of 195W/m² (2-stud) or 130W/m² (3-stud). The Ultimate cable's in-line joint means no membrane cuts — waterproofing stays intact. Ideal for bathrooms, wet rooms and tile projects where decoupling is required. IP68. Lifetime warranty on registration.
IP68
Protection
Self-Adhesive
Membrane
195/130W/m²
Selectable Output
In-Line
Joint — No Cuts
5.5mm
Mat Thickness
Lifetime
Warranty
Key Features
Self-Adhesive Membrane — Peel, Stick and Go
The self-adhesive membrane uses the strongest self-adhesive layer available in the UK. Apply directly to a clean, flat, dry plywood or OSB surface — no tile adhesive needed to fix the membrane. Saves time, reduces materials and saves an extra 3mm of floor height compared with the fleece-backed option.
Peel and stickNo membrane adhesiveSaves 3mm
Ultimate Cable — In-Line Joint, No Membrane Cutting
The Ultimate cable's in-line joint is the same diameter as the cable body. It passes through the stud channels without any cutting — the membrane's waterproofing stays completely intact. Lay cable, then tile directly over — one step.
In-line jointNo cuttingWaterproofing intact
Dual Output — 195W/m² or 130W/m²
195W/m² at 2-stud spacing — wet rooms and high heat-loss spaces. 130W/m² at 3-stud spacing — primary heating in well-insulated rooms.
195W/m² or 130W/m²
Decoupling — Tile Protection on Any Substrate
The stud structure decouples tiles from the subfloor, neutralising differential expansion stress that causes cracking. Rated extra heavy use (Robinson Test). Compatible with concrete, screed, timber and tile backer subfloors.
DecouplingExtra heavy use
IP68 — Safe in Wet Rooms and Bathrooms
IP68 rated — completely impervious to moisture, safe in wet rooms, shower areas and bathrooms when installed with appropriate accessories.
IP68Wet room safe
Lifetime Warranty — Stays with the Property
Backed by a lifetime warranty when registered online. Uniquely, the warranty transfers with the property on sale — the new owners remain covered.
Lifetime warrantyProperty warranty
Technical Specifications
Self-Adhesive Membrane
Thickness
5.5mm
Backing
Self-adhesive (no tile adhesive required for mat fixing)
Suitable Substrates
Flat, clean, dry plywood or OSB
Decoupling
Yes — neutralises lateral substrate movement
Vapour Management
Yes — stud channels allow vapour escape
Ultimate Heating Cable
Voltage
230V / 50Hz
Output (2-stud spacing)
195 W/m²
Output (3-stud spacing)
130 W/m²
Protection Rating
IP68
Joint Type
In-line (same diameter as cable — no membrane cuts required)
Robinson Test Rating
Extra heavy use
Cable Insulation
FEP and HR-PVC
Warranty
Warranty
Lifetime (online registration required)
Country of Origin
United Kingdom
ℹ Installation: All electrical connections must be made by a qualified electrician in accordance with BS 7671. Register your product with ThermoSphere online to activate your lifetime warranty.
Frequently Asked Questions
What substrate does the self-adhesive membrane need?
Flat, clean, dry plywood or OSB. Not for uneven, wet or dusty surfaces. For other substrates use the fleece-backed membrane with tile adhesive.
What output do I get?
195W/m² at 2-stud spacing (wet rooms, high heat-loss). 130W/m² at 3-stud spacing (primary heating in well-insulated rooms).
Does this include a thermostat?
No — sold separately. The T-MO is recommended for smart Wi-Fi/BLE control.
Can I use this in a wet room?
Yes — IP68 + membrane waterproofing properties make it ideal. A tanking kit applied over the membrane provides full waterproofing.
Can I tile directly over the system?
Yes — tile directly over cable and membrane with flexible tile adhesive. No levelling compound required.
