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12.5mm Knauf Vapour Panel Square Edge Plasterboard 1800mm x 900mm
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12.5mm vapour-resistant plasterboard with integral vapour control layer for walls and ceilings. Square edges suit skim plaster finishes. Handy 1800mm x 900mm sheet fits easily in lofts, bathrooms, stairwells.
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Thu 25 Sep
- 0days
- 6hrs
- 21mins
- 11secs
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- Choose Clearpay at checkout to pay later with Pay in 4.
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Product Overview
12.5mm vapour-resistant plasterboard with integral vapour control layer for walls and ceilings. Square edges suit skim plaster finishes. Handy 1800mm x 900mm sheet fits easily in lofts, bathrooms, stairwells.
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, FK, KW, IV, LA, LD, LL, NP, PA, PH, SA, SY
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 £300 | £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
- {{horizontal_split}} Can be layered to improve vapour barrier effectiveness
- {{format_paint}} Provides a smooth, ready-to-finish surface
- {{recycling}} Fully recyclable once the foil backing is removed
- {{fact_check}} Suitable for partitions, linings and ceilings
Technical Specification
| Product: | Vapour Panel |
|---|---|
| Material Type: | Gypsum |
| Thickness: | 12.5mm |
| Width: | 900mm |
| Length: | 1800mm |
| Sales Unit: | Sheet |
| Sales Unit Coverage: | 1.62m2 |
| Brand: | Knauf Drywall |
| Manufacturer's Reference: | 243714 |
| Weight: | 13.45kg |
| Facing: | Foil |
| Edge: | Square |
Product Overview
Foil-backed vapour-control plasterboard sheet, measuring 1800 × 900mm with a 12.5mm square edge, for use in partitions, linings, and ceilings where condensation risk needs to be managed.
Features an aerated gypsum core finished with a metallised foil backing, creating a built-in vapour barrier that reduces moisture transfer through walls and ceilings. This helps control condensation, minimises the risk of mould growth, and supports thermal efficiency in kitchens, bathrooms, and utility areas.
The square edge profile allows boards to butt cleanly together without a recess, making it suited to textured finishes, direct decoration, or traditional jointing and plaster skim methods.
Smaller dimensions improve manoeuvrability on site, particularly in confined spaces or where access is limited, while still providing the same dependable performance as full-size boards.
At 12.5mm thick, the board provides the industry-standard depth for drylining, combining structural stability with integrated vapour control to manage condensation risks.
Features & Benefits
- Foil backing: Acts as a vapour barrier to control moisture transfer and reduce condensation risk.
- Integrated vapour control layer: Improves thermal efficiency and contributes to a healthier indoor environment.
- Square edge profile: Creates a flush joint suited to skim plaster finishes.
- Durable paper face: Provides a strong surface for paint, plaster skim, or other finishes.
- Reaction to fire: Classified A2-s1, d0 - limited contribution to fire and minimal smoke production.
- Low thermal conductivity: 0.19 W/mK - supports system U-value calculations.
- Recyclable: Can be recycled at end of life once foil backing is removed.
- Compact 1800mm x 900mm sheet: Easier to transport through restricted spaces.
- 12.5mm thickness: Standard for drylining - basis for most stud, track, and lining specs.
Applications
- Partitions: Provides vapour control in internal dividing walls.
- Wall linings: Suitable for framed or masonry walls in moisture-sensitive areas.
- Ceilings: Helps prevent condensation in kitchens, bathrooms, and utility rooms.
Installation Guidance
- Fix with staggered joints: Improves stability and reduces weak points.
- Cut by scoring and snapping: Ensures neat, accurate edges.
- Seal joints and perimeter edges: Maintains vapour control integrity across the system.
- Store flat in a dry, ventilated space: Protects boards from damage and moisture ingress.
Compliance & Performance
- Compliance: EN 520 & EN 14190 - conforms to plasterboard and laminated plasterboard standards.
- Reaction to fire: Classified A2-s1, d0 - limited contribution to fire and minimal smoke production.
- Thermal conductivity: 0.19 W/mK - contributes to overall system energy efficiency.
- Sustainability: Fully recyclable after removal of foil backing.
