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INSBOARD30MM
Warmup INSBOARD30MM Insulation Board – 30mm Thick, Cement-Faced Tile Backer for Underfloor Heating Systems
The Warmup INSBOARD30MM is a high-performance insulation board designed to enhance the efficiency of electric underfloor heating systems. Made from water-resistant extruded polystyrene, it is reinforced with fibreglass mesh and a cement polymer mortar finish—offering superior thermal insulation and a stable base for tile installation.
- Maximises Heating Efficiency: Reduces heat loss and accelerates heat-up times by directing warmth upwards into the floor surface.
- Water-Resistant Core: XPS core resists moisture and damp, making it ideal for bathrooms, kitchens, and wet rooms.
- Strong Cement Facing: Double-sided cement polymer mortar with fibreglass mesh adds strength and impact resistance.
- Load-Bearing Performance: Suitable for use beneath tiles in high-traffic areas without compromising stability.
- Easy to Cut & Install: Lightweight and simple to handle, making installation fast and hassle-free on most substrates.
Technical Specification
- Product Type: Insulated tile backer board
- Thickness: 30mm
- Dimensions: 600mm (W) x 1250mm (L)
- Core Material: Extruded polystyrene (XPS)
- Facing: Cement polymer mortar with fibreglass mesh (both sides)
✅ Choose Warmup INSBOARD30MM to improve heating performance and provide a durable, insulated foundation for tiled floor finishes!

Range | Warmup INS Insulation Boards |
Product | Underfloor Heating |
Type | UFH Insulation Board |
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.