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SPM3.5
Warmup SPM3.5 StickyMat Underfloor Heating Mat – 150W/m², Efficient Heating Solution for 3.5m² Floor Coverage
The Warmup SPM3.5 StickyMat is a reliable underfloor heating system designed for medium-sized floor areas in new builds, refurbishments, and retrofits. Featuring a 1.8mm ultra-thin cable pre-attached to a pressure-sensitive adhesive mesh, it ensures fast, secure installation and consistent 150W/m² heat output for efficient comfort.
- Fast Installation: Self-adhesive mesh allows for a clean, secure fit to the subfloor, saving time on-site.
- Energy-Efficient Output: 150W/m² delivers responsive heating performance with low energy consumption.
- Low-Profile Cable: 1.8mm twin-conductor design minimises floor height build-up—ideal for renovation projects.
- Uniform Heating: Evenly spaced wire ensures full surface coverage without cold patches.
- Broad Compatibility: Suitable for use beneath tile, stone, and other common floor finishes.
Technical Specification
- System Type: Electric underfloor heating mat
- Mat Size: 0.5m (W) x 7m (L)
- Coverage Area: 3.5m²
- Power Output: 150W/m², Total 525W at 230V
- Cable Diameter: 1.8mm twin-conductor
✅ Choose the Warmup SPM3.5 StickyMat for easy installation and consistent, efficient heating across medium-sized areas!

Range | Warmup StickyMat |
Coverage | 3.5 Square metres |
Product | Underfloor Heating |
Type | UFH Mat |
Wattage | 525 W |
Delivery Options:
- PRIORITY DELIVERY – Next Working Day (All items in stock and ordered before 3 pm) - £7.08 inc-VAT. (£5.90 ex-VAT)
- Orders Over £100 (before VAT): We offer free standard shipping on all orders shipped to UK mainland addresses
- Orders under £100 (before VAT): Our standard delivery fee to UK mainland addresses is £5.90 ex-VAT (£7.08 inc-VAT)
*Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £12 ex-VAT for all orders (Prices subject to change).
Items requiring specialist shipping:
- Orders containing Solar Panels, Batteries and/or Inverters: Up to 50 qty will be dispatched on a pallet and incur a £120 ex-VAT delivery charge**.
**Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £180 ex-VAT (Prices subject to change).
Contact us if you have any further questions.