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Please note that iWood is a wholesale timber merchant, and because much of our timber is imported to order, we have a minimum order amount of £750 ex VAT (£900 inc VAT).
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Fresh Sawn and Air Dried Oak Beams - Buy Online

A beautiful and timeless natural material for construction and decoration.

Choose from two grades of Fresh Sawn (green) oak beams, and an Air Dried grade, both suitable for construction.
Item price
Line price
Fresh Sawn Construct. (QPA)
Fresh Sawn Construct. (QP1)
Air Dried Constructional
Sawn Sizes
Looking for Kiln Dried Oak?

The oak on this page is either Fresh Sawn or Air Dried.

If you are looking for Kiln Dried Oak, which has less moisture and is more stable (but only available up to 100mm x 230mm), please see our Cut to Size Oak section.
Example pricing for iWood Timber Oak Beams
If you enter the following settings into the calculator above, this is the price you'll get:
Fresh Sawn Construct. QP1 Grade: 100 x 100mm x 2m - £21.82 inc (£18.18 ex) (Product #: IW-05-32)
Product Description

European Oak Beams to buy on line

iWood's Fresh Sawn Oak, sometimes called Green Oak, are sawn from oak trees grown in managed forests and produced to your section sizes for use in construction or landscaping projects.

Our oak beams and oak sleepers are sourced directly from hand-picked sawmills around Europe and as such, they are of the highest quality. Oak is an extremely versatile material that is resistant to harsh conditions and easily stands up to the test of time. It is a highly dense and durable material that boasts both strength and hardness.

As a timber, it has been used since medieval times for building and construction, so whatever your purpose, this timber is an excellent choice. Oak is also able to withstand attack from insects and fungus and has an attractive grain pattern, which makes it ideal for decoration purposes as well as practical use.

What makes our oak so special?

Here at iWood we source only the best materials and our beams are no exception. Whether you're using them purely for decoration or they’re part of the structure of your house, rest assured that our beams are up to the task. If you would like to talk to someone about them or have a question then feel free to get in touch.

What grades of beam can you supply?

iWood supplies 3 "Fresh Sawn" or "Green Oak" grades and an "Air Dried" grade. Our Fresh Sawn QPA and QP1 grades are the most popular and ordered regularly for construction jobs.

  • Fresh Sawn Constructional (to QPA) - Our highest grade of oak beam, also known as 'D30 construction grade' (please note, this grade replaces D40, if that's what you're looking for) with fewer knots than the QP1 grade. Suitable for, and used extensively in construction.
  • Fresh Sawn Constructional (to QP1) - Our second highest grade, also known as to 'D24 construction grade'. This grade is also suitable for construction. It contains more knots than our QPA Grade. Click here for more information on the QPA and QP1 grading rules..
  • Air Dried Constructional Grade - Suitable for construction where reduced movement or an existing aged look is required. Air dried oak has dried naturally for between 2 and 5 years, giving the timber a discoloured, darker, weathered look, featuring the highly-sought-after traditional surface checking. It's common practice to hand plane, sand or shot-blast the faces before use, or choose the option for us to plane them for you. Air dried beams, because they already feature splits and surface checking, are often used in restoration work or like-for-like repairs to more closely match existing, aged oak.
  • Fresh Sawn Fencing / Sleeper Grade - A lower grade of oak, not suitable for construction but Oak sleepers are used extensively for landscaping.

What sizes of beams can you supply?

Please note, as is industry-standard, our beams are not exactly cross-cut to length and are provided slightly over-length to be cut down on site.

We have a wide range of oak posts available. Fresh Sawn beams are available in QPA & QP1 grade which we can supply in thicknesses of 30mm to 300mm, widths of 50mm to 300mm, and lengths up to 7m. Larger sections and longer lengths are available on both grades but we need to check for availability and may need specific delivery arrangements. Our friendly staff are just a phone call away if you need something specific.

Air dried oak is available on our website up to 350mm section, up to 7m.

Larger sections and longer lengths are available but may require additional delivery arrangements. Call our sales team on 01889 597281 to discuss.

Air dried is available in standard pre-cut sections of 100x100mm, 120x120mm, 150x150mm, 180x180mm, 200x200mm, 250x250mm and feature the lowest air-dried price per cubic metre. Any different air dried sizes you require will be cut from these sections, revealing fresh sawn faces.

Drying and Movement

One of the most common questions we get asked about oak posts is “Won’t the oak move as it dries? How does this affect the structure of the building?”.

The answer is yes, oak can shrink slightly, but it doesn't cause a problem. Fresh Sawn Oak posts, and air dried to a lesser extent, can shrink by between 5 and 7 percent across the face as part of the drying process, but almost negligibly in the length. This has the effect of pulling any jointing tighter, actually strengthening the structure. Oak dries very slowly and does not detract from its structural integrity.

As the surface of fresh sawn oak dries, it will begin to check, which gives oak its traditional, characteristic look.

What is the Difference between a Sawn and Planed Finish?

As standard, the oak posts have a rough sawn finish sometimes featuring lines from the band saw, which is perfectly acceptable for most applications, or can be sanded or hand-planed before use if preferred.

Sawn beams can have a tolerance of approximately 5mm plus or minus so we provide the option for your beams to be planed to a more exact finished size if required. iWood's kit form Oak Trusses are all provided with a planed smooth finish.

The main reason for having planed beams is to get more precise sizing. While smooth when you receive it, the surface will eventually check as it ages and dries, so planed and sawn faces end up looking similar with time.

Joiners tend to prefer to work with planed beams as they can work knowing the corners are square.

Delivery of Beams

Most iWood deliveries are carried out on a flat-bed truck without a HIAB (crane arm) for offloading, but because beams are the heaviest product we sell, the majority of deliveries, where possible, will be made using a HIAB lorry for no extra cost.

Exceptions may include west Wales, Northern Scotland, Cornwall and Devon (purely because the delivery networks we use don't have regular routes there that we can piggy-back onto). Please check with us first whether we can provide a HIAB lorry to your area if there is any doubt.

Important Fixing Information

If you are using screws or nails with the oak, it is important that stainless steel is used, as the natural tannins (acids) in the oak will quickly corrode iron.

Blue Stain

As you can see on some of the photographs, beams can sometimes have black or dark blue marks on them that are picked up during production when they come into contact with ferrous metals. These will fade with time, can be sanded off after the surface of the beam has dried, or can be removed immediately with Oxalic Acid.

You can reach us with any questions, or place an order on 01889 279018.

Oak Beam Image Gallery

Here are some photographs of oak beams jobs we've completed recently to give you an idea of the product

We have a huge range of other products available too, check out our Oak Cladding and our solid oak flooring

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Timber Species Information
European Oak

Species group:
Temperate hardwoods
2 - Durable (Learn about durability)
Colour description:
Yellow brown
Mean density:
1236 Kg/m3 (wet) - 720 Kg/m3 (kiln dried)
Architect / Design Specify
Fresh Sawn Construct. (QPA)
Product Code: IW-5-32-22
Specify: - Fresh Sawn Construct. (QPA) European Oak from iWood Timber
Fresh Sawn Construct. (QP1)
Product Code: IW-5-32-17
Specify: - Fresh Sawn Construct. (QP1) European Oak from iWood Timber
Air Dried Constructional
Product Code: IW-5-32-14
Specify: - Air Dried Constructional European Oak from iWood Timber
Teak Now Availble

Fill in the online quote request form on our Teak wood page and we will get back to you with a quote.


How long do our deliveries take?

We get the very best timber directly from sawmills, because of this deliveries usually take place around 14 to 17 working days after you place your order.

Costs of delivery

We base our delivery costs on where you're located. Make sure that you check out our delivery costs page

How to receive a delivery

Our timber deliveries can sometimes be heavy, for this reason you'll either need your own equipment or available person-power to unload your delivery.

How our orders for wood work

Once your secure order is placed, you should get an email that confirms exactly what you've ordered. Once we receive you're order from our sawmill and wood suppliers and we're ready to ship it out to you, we'll give you a call to confirm a delivery with you.

Still Have Questions?

Call our seasoned sales team on 01889 597281.

Send us a message through our Contact Form.

Email your cutting list to .

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