9mm Exterior Grade Class 3 Plywood 2440mm x 1220mm (8′ x 4′)
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£36.20 Original price was: £36.20.£32.61Current price is: £32.61. ex VAT
This exceptional hardwood plywood is specifically designed for exterior applications, offering superior performance in challenging outdoor environments. Classified under bond class 3, it surpasses standard class 2 plywoods in terms of weatherproof properties and durability.
EXCELLENT Based on 1292 reviews Posted on Mr DesouZaTrustindex verifies that the original source of the review is Google. First time using Trade insulations an would definitely use again , good prices an very quick delivery, highly recommended.Posted on Gary GlennTrustindex verifies that the original source of the review is Google. Great service from Trade insulation, price was the best I found and I got free delivery in 5 days .. including the weekend ! boards all good and the new SOPREMA .. Highly recommendPosted on Mark RobinsonTrustindex verifies that the original source of the review is Google. Excellent (again). Good stock, well priced, clear and friendly communication, great delivery service.Posted on Mark RowlandTrustindex verifies that the original source of the review is Google. Good, friendly service. Recommended.Posted on Oliver BeachamTrustindex verifies that the original source of the review is Google. Very good low prices, quick delivery times as well. Highly recommend using this company.Posted on Liam MontroyTrustindex verifies that the original source of the review is Google. Really good service. Answered any query immediately and helped massively with delivery. Delivery was super fast, and the driver helped place the order close to where I needed it.Posted on macTrustindex verifies that the original source of the review is Google. Excellent Service from start to finish. I wouldn't hesitate using Trade Insulation again.Posted on Michael KilbaneTrustindex verifies that the original source of the review is Google. I have no complaints whatsoever dealing with this company, from ordering to delivery it went smoothly! The driver was helpful and very competent. Would recommend to anyonePosted on Ryan CrosslandTrustindex verifies that the original source of the review is Google. Ordered 4 insulated plasterboard panels, they came on time and were fantastic quality 👌
This 9mm exterior grade 3 plywood is a cost effective yet versatile sheet material. It can be used for a wide range of building and outdoor applications.
It is crafted from premium hardwood, which is designed to withstand some exposure to the elements. This plywood combines strength and reliability without stepping up to a fully structural marine grade board.
The dimensions of this plywood is 2440mm x 1220mm and is easy to handle and install. It is 9mm in thickness and provides good rigidity for both light structural and non-structural uses.
9mm Exterior Grade Class 3 Plywood Key Features
- 9mm thickness
- 2440mm x 1220mm (8′ x 4′) full sheet size
- Class 3 exterior bond (moisture resistant)
- Suitable for humid and sheltered external environments
- Easy to cut, fix and install
Plywood Applications
This plywood board can be used in many different applications, which includes:
- Shed walls and roofs
- External cladding (when properly treated and sealed)
- Hoardings and site boarding
- Flooring overlays
- General DIY and trade projects
For the optimal performance in external applicatons, the edges and faces should be adequately sealed after cutting.
This grade 3 plywood is perfect for both trade and DIY projects.

Florence –
used outside and held up well so far
Rory –
used outside temporarily and held up better than expected
Omar –
basic but let us get the job done no issues
Connor –
use Trade Group for my timber and insulation – good company and good service
Willow –
The plywood was solid, and there was no noticeable difference in the grain or thickness between sheets.
Charles –
I’ve used this plywood for various custom carpentry projects and it’s been excellent.