| Materials | Price inc VAT | Lead Time |
|---|---|---|
| Oak | 3270 £ | 8 -10 Weeks |
| Douglas fir | 3120 £ | 8 -10 Weeks |
| Treated spruce | 3020 £ | 8 -10 Weeks |
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![Durable Oak Pergola with Chunky Oak Beams: Durable and Elegant Garden Addition, Dimensions: [Height] x [Width] x [Length], [Number of Bays]](https://timbersolution.co.uk/wp-content/uploads/2023/09/wrde-strong-1024x767.png)
When designing an oak pergola, choosing the right post and beam thickness is one of the most important decisions. The correct dimensions ensure the structure is strong, stable, and visually balanced. Oak is exceptionally durable, but like all natural timber, it needs to be sized correctly to perform well and maintain its appearance over time. This guide explains the ideal post, rafter, and beam thickness for oak pergolas — and offers professional recommendations based on real experience in oak framing.
no 1 – Posts (uprights) — the vertical supports that carry the load. 145 × 145 mm (minimum 140 × 140 mm)
no 2 – Headers or Ring Beams — the horizontal members connecting the posts, bearing most of the weight. 145 × 145 mm, increase for longer spans
no 3 – Rafters — smaller crosspieces on top, adding shade and structure. 60 × 140 mm minimum
no 4 – Brace – helping prevent the pergola from moving, twisting or swaying under wind and load.
| Stronghold Pergola Supplied – Included | ||
| Uprights | mm | 145 x 145 |
| Top Plates | mm | 145 x From 145 |
| Joists | mm | 60 x 140 |
| End Beam Cut | Type | A1 – 20 |
| Brace B1 | mm | 50 x 150 |
| Kiln Dried Oak Dowels | mm | Diameter 16 |
| Breeze Pergola Extras | ||
| Brace B2 – 9 | Extra | |
| Staddle Stones – Flat or Taper | Extra | |
| Concealed Post Base – CPT66Z | Extra | |
| Adjustable Elevated Post Base | Extra | |
| Custom Wall Systems D1-12 | Extra | |
| Chamfers for Beams Larger than 165 mm | Free | |
| Fixings ( screws, nails, etc ) | Extra | |
| Delivery | Extra | |
| Tailor The Frame To Be Up To 225 mm Thick | ||
Please, provide us with information on what is required for pricing and design.
We will prepare a price offer and get back to you with an offer and 3D renders for free of charge.
If you have your own sketches, architectural drawings or photos from the internet, please attach below, it will help us with design and pricing.





















