| Materials | Price inc VAT | Lead Time |
|---|---|---|
| Oak | 2220 £ | |
| Douglas fir | 2020 £ | |
| Treated spruce | 1900 £ |
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Oak is widely chosen for outdoor structures because it is naturally durable and long-lasting. One of the most common questions homeowners ask is whether oak needs to be treated at all—and if so, what treatments are suitable.
Oak does not need chemical treatment to protect it from rot or insects. Its natural tannins provide excellent resistance. However, some people choose to apply treatments for appearance, moisture control, or UV protection rather than structural preservation.
Below are the most popular and appropriate treatment options for oak.
This is a cosmetic choice and does not increase oak’s lifespan.
Microporous wood oils allow oak to breathe naturally, which is essential as oak expands and contracts.
Always choose breathable products designed for hardwoods.
Clear water repellents are sometimes used in high-rainfall areas.
These treatments are optional and mainly used for exposed locations.
Some products can do more harm than good. Avoid:
These products can trap moisture, crack over time, and shorten the life of oak.
In most cases, leaving oak untreated is the best long-term option. The natural silver-grey patina is a sign of quality oak ageing correctly outdoors, not deterioration.
| Stronghold Pergola Supplied – Included | ||
| Uprights | mm | 145 x 145 |
| Top Plates | mm | 145 x From 145 |
| Joists | mm | 70 x 145 |
| End Beam Cut | Type | A1 – 20 |
| Brace B1 | mm | 50 x 150 |
| Kiln Dried Oak Dowels | mm | Diameter 16 |
| Extras | ||
| Brace B2 – 9 | Extra | |
| Staddle Stones – Flat or Taper | Extra | |
| Concealed Post Base – CPT66Z | Extra | |
| Custom Wall Systems D1-14 | 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 | ||
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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.



























