12mm STS Construction Board 2400mm x 1200mm
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12mm heavy-duty cement-based board for internal or external use, providing maximum strength and impact resistance for demanding applications. Impervious to moisture and A1 Fire Rated. Standard size sheet.
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Thu 20 Nov
- 0days
- 15hrs
- 34mins
- 3secs
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Product Overview
12mm heavy-duty cement-based board for internal or external use, providing maximum strength and impact resistance for demanding applications. Impervious to moisture and A1 Fire Rated. Standard size sheet.
Delivery & Returns Information
How Our Delivery Works
We work with a nationwide network of trusted suppliers. As a result, items in your basket may be supplied by different suppliers and delivered separately. Where this applies, you'll see multiple delivery charges at checkout. We always aim to group products from the same supplier to keep delivery costs as low as possible.
Delivery Areas & Charges
Delivery charges listed on our website apply to mainland UK, excluding the following postcode areas: AB, CF, DD, DG, EH, FK, KA, KW, KY, IV, LA, LD, LL, ML, NP, PA, PH, SA, SY & TD
If your delivery address falls within one of these postcode areas, we’ll be in touch before processing your order to confirm any additional delivery costs.
Please note: We do not currently offer delivery outside the UK mainland.
Standard (Nationwide) Delivery
| Insulation, Plasterboard and Drylining Products | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £350 | £35 ex. VAT |
| Over £350 ex. VAT | FREE |
| Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £100 | £20 ex. VAT |
| Between £100 - £300 ex. VAT | £10 ex. VAT |
| Over £300 ex. VAT | FREE |
| Screws & Fixings and Adhesives & Sealants | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £50 | £5 ex. VAT |
| Over £50 ex. VAT | FREE |
Express Delivery
| Express Delivery - Insulation and Plasterboard & Drylining | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £400 | £50 ex. VAT |
| Over £400 ex. VAT | £35 ex. VAT |
| Express Delivery - Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 | £50 ex. VAT |
| Over £300 ex. VAT | £35 ex. VAT |
Returns
We offer a 30 day returns policy on any faulty products.
Key Features
- {{shield}} Offers water, fire, and impact resistance
- {{fitness_center}} High-strength, render-ready board
- {{local_fire_department}} Non-combustible
- {{water_drop}} Ideal for wet areas and weather exposure
Technical Specification
| Thickness: | 12mm |
|---|---|
| Width: | 1200mm |
| Length: | 2400mm |
| Sales Unit: | Sheet |
| Sales Unit Coverage: | 2.88m2 |
| Brand: | STS |
Technical Downloads
Product Overview
STS Construction Board with a 12mm thickness and 2400mm x 1200mm sheet size. This high-density cementitious fibre board is designed for use in wet areas, structural lining, and tile-backing installations.
It offers exceptional dimensional stability, moisture resistance, and mechanical strength compared with traditional plasterboard systems. Manufactured from a blend of cement, mineral fillers, and cellulose fibres, the board provides a robust, impact-resistant substrate that will not degrade or swell when exposed to humidity.
Its smooth, factory-finished surface is suitable for direct tiling, finishing, or decorative coatings. The 12mm thickness provides enhanced rigidity and load-bearing strength for wall, ceiling, and flooring applications requiring a strong, durable substrate.
Features & Benefits
- High moisture resistance: Ideal for bathrooms, showers, and wet-room environments where stability is essential.
- High density and strength: Provides excellent impact resistance and rigidity under load.
- Versatile substrate: Suitable for direct tiling, render, or decorative finishes without additional treatment.
- Dimensional stability: Maintains form and flatness even in fluctuating humidity or temperature.
- Durable composition: Resistant to mould, rot, and disintegration over time.
- Sheet size and thickness: 2400mm x 1200mm board with 12mm thickness suited to heavy-duty wall and floor construction.
Applications
- Wall lining: Provides a durable, moisture-resistant substrate for tiled or finished surfaces.
- Floor underlay: Acts as a stable base layer beneath tiles or finishes in wet areas.
- Ceiling lining: Used where enhanced fire and moisture resistance is required overhead.
- Wet rooms and showers: Ideal for direct application behind waterproofing systems.
Installation Guidance
- Cutting: Score and snap using a tungsten or carbide knife; mechanical saws may be used with dust extraction.
- Fixing: Secure to framework or solid substrate using corrosion-resistant screws or fixings at regular intervals.
- Joint treatment: Reinforce joints with alkali-resistant mesh tape and suitable jointing compound or waterproof membrane.
- Finishing: Ensure surface is clean and dust-free before applying tile adhesive, render, or finish coat.
Compliance & Performance
- Material composition: Fibre-cement board manufactured to EN 12467 standards.
- Moisture performance: Water-resistant and dimensionally stable in humid and wet environments.
- Fire performance: Non-combustible to Euroclass A1 for enhanced fire safety.
- Environmental compliance: Contains no asbestos or harmful additives and meets EUTR timber regulations.
- Important note: Always handle with suitable PPE and follow manufacturer installation guidance to maintain certification and fire rating.
