18mm Exterior Grade Class 3 Hardwood Plywood 2440mm x 1220mm (8' x 4')
| 18+ sheets | 24+ sheets | 30+ sheets |
| £40.79ex. VAT | £39.95ex. VAT | £37.85ex. VAT |
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Class 3 exterior-grade hardwood plywood for outdoor use. Suitable for cladding, joinery, and construction exposed to weather. 18mm thickness for doors, external flooring, and heavy-duty outdoor structures.
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Tue 18 Nov
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- 1hrs
- 20mins
- 57secs
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Product Overview
Class 3 exterior-grade hardwood plywood for outdoor use. Suitable for cladding, joinery, and construction exposed to weather. 18mm thickness for doors, external flooring, and heavy-duty outdoor structures.
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
| 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 |
| Insulation, Plasterboard and Drylining Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £350 | £35 ex. VAT |
| Over £350 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
- {{thunderstorm}} Exterior-grade hardwood plywood for outdoor use
- {{fitness_center}} Moisture, weathering, and fungal resistance
- {{checklist}} Wide application range
- {{texture}} Smooth surface
Technical Specification
| Product: | Exterior Grade |
|---|---|
| Bond Class: | BS EN636-3 |
| Thickness: | 18mm |
| Width: | 1220mm |
| Length: | 2440mm |
| Sales Unit: | Sheet |
| Sales Unit Coverage: | 2.98m2 |
| Application: | Floors, roofs, walls, hoardings, temporary protection |
| Edge: | Square |
| Indoor/Outdoor Usage: | Exterior |
Product Overview
Exterior Grade Class 3 Hardwood Plywood with an 18mm thickness. A premium, high-performance sheet material designed for outdoor and high-moisture environments.
Manufactured from selected hardwood veneers and bonded with a Class 3 weather- and boil-proof adhesive, it provides exceptional durability, dimensional stability, and resistance to fungal decay. This plywood maintains structural integrity under prolonged exposure to moisture and fluctuating weather conditions, making it ideal for demanding exterior and semi-exposed applications.
The smooth, even surface accepts paints, stains, and protective coatings, ensuring both functionality and aesthetic quality. The 18mm board thickness offers strength and rigidity suitable for a wide range of structural and general-purpose uses.
Features & Benefits
- Exterior-grade construction: Engineered with Class 3 adhesive for superior resistance to weather and humidity.
- High-strength hardwood core: Provides outstanding mechanical performance and dimensional stability.
- Weatherproof durability: Withstands continuous exposure to moisture without swelling, delaminating, or warping.
- Smooth surface finish: Ideal for paint, stain, or laminate applications where a clean, uniform appearance is required.
- Fungal and moisture resistance: Prevents decay and surface degradation in damp or outdoor conditions.
- Multi-purpose performance: Suitable for both load-bearing and non-structural installations in construction and joinery.
- Board thickness 18mm: Delivers a balance of rigidity and manageable weight for wide-ranging site and workshop applications.
Applications
- Flooring: Provides a robust and moisture-resistant base for both permanent and temporary floor structures.
- Roof decking: Suitable for exterior roof systems requiring strong and weatherproof sheeting.
- Wall sheathing: Ideal for external wall linings or cladding substrates exposed to intermittent weathering.
- Site hoardings: Reliable choice for durable, reusable site barriers and screening panels.
- Temporary protection: Effective for safeguarding floors and structures during construction or refurbishment.
Installation Guidance
- Panel conditioning: Allow sheets to acclimatise to site temperature and humidity before installation.
- Fixing method: Secure with corrosion-resistant screws or nails at recommended centres for exterior-grade boards.
- Joint spacing: Leave small expansion gaps between sheets to accommodate natural timber movement.
- Edge treatment: Seal cut edges and faces with a waterproof coating or paint for extended durability.
- Surface finishing: Apply appropriate protective or decorative finishes depending on exposure level and application.
Compliance & Performance
- Material specification: Multi-ply hardwood veneers bonded with Class 3 (EN 314-2) weather and boil-proof adhesive.
- Durability rating: Certified for exterior use under EN 636 Class 3 performance standards.
- Weather and moisture resistance: Suitable for continuous exposure to outdoor conditions.
- Fungal resistance: Designed to prevent biological degradation under damp or humid environments.
- Important note: Ensure all edges and penetrations are sealed to maintain full exterior-grade performance.
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