Decorative Oak Window Beam | Solid Oak Fascia Lintel | Celtic Timber UK

Decorative Oak Window Beam (Fascia) – Solid Oak Window Lintel Detail

Add warmth, depth and character to your home with a beautifully crafted solid oak window beam, designed as a slim fascia detail to sit neatly above your window.

Unlike bulky structural beams, these are a clean, lightweight solution that delivers the same timeless oak look — without the complexity. Perfect for kitchens, living spaces and modern interiors, they create a subtle architectural feature that instantly elevates a room.

Each beam is handcrafted from carefully selected from 40mm thick Solid French air-dried or kiln-dried oak (depending on stock), chosen to minimise movement while maintaining the natural beauty of real timber.

Planed and sanded to a smooth finish, every piece showcases the unique grain, knots and character that make solid oak so desirable.

 A simple upgrade with a big visual impact.

✔ Why Choose Our Oak Window Beams?

✔ Solid French oak (air-dried or kiln-dried)
✔ Slim 40mm fascia profile (clean, modern look)
✔ Pre-fitted keyhole brackets for easy installation
✔ Screws & raw plugs included (masonry walls)
✔ Handcrafted in the UK
✔ PEFC certified sustainable timber

Choose Your Size

Available in three simple options:

• 6" height – subtle, understated
• 7" height – balanced (most popular)
• 8" height – bold feature

 All beams are supplied at a consistent 40mm thickness

All dimensions are within +/- 5mm

Our window fascia beams are designed for a quick and straight forward installation using the pre-fitted keyhole brackets.

You’ll need:

• Drill
• Spirit level
• Tape measure
• Pencil
• Screwdriver
• 10mm masonry drill bit

Screws and wall plugs are included for solid masonry walls

For plasterboard walls:
suitable fixings will need to be purchased separately.

Step 1 – Mark Your Position

Using a spirit level, draw a straight horizontal line where the beam will sit.
This ensures your beam is perfectly level.

Step 2 – Transfer Fixing Points

Measure the distance between the keyhole fixings on the back of the beam and mark these positions onto the wall.

Step 3 – Drill & Prepare

Drill holes into the wall at your marked positions and insert the wall plugs provided.

Step 4 – Insert Screws

Drive the screws into the wall, leaving them slightly proud (around 5–6mm).
This allows the beam to slot onto the keyhole brackets.

Step 5 – Fit the Beam

Carefully place the beam onto the screws and slide it down into position.
It should sit flush and secure against the wall.

Step 6 – Final Adjustments

Check the beam with a spirit level.If needed, make small adjustments by tightening or loosening the screws slightly.

Optional (Extra Secure)

For added hold, you can apply a small amount of grab adhesive or silicone to the back before fitting.

Perfect for:

• Window lintel features
• Kitchen windows (especially above sinks)
• Living rooms and bedrooms
• Modern farmhouse interiors
• Adding warmth to painted or rendered walls

Current lead time: Approx. 1 week

We ship nationwide The delivery cost is calculated at checkout.

Smaller beams ship via courier.
Larger beams ship palletised via haulier.

For pallet deliveries, sufficient help must be available to unload by hand. If this is not possible, please contact us prior to ordering.

Delivery days are Weekdays only.

Impotant - Remove all packaging immediately upon delivery to allow the timber to breathe and acclimatise even if its not being fitted straightaway.

Oak is a natural product and each beam will vary slightly in:

• Colour
• Grain pattern
• Knots
• Surface cracks
• Character markings

Our character grade beams may contain natural splits and checks which can continue to develop as the timber acclimatises.

Oak may continue to shrink slightly as it adjusts to your property's temperature and humidity.

If installing above a fire or log burner, we recommend gradually increasing heat exposure over the first week.

These characteristics are not faults — they are part of the beauty of real solid oak.

Your beam includes a pot of your chosen protective oil.
Oil enhances the grain while protecting the timber.

Please refer to the image gallery for finish examples, noting that each piece of oak will vary naturally in tone and grain.

If you are unsure which beam style (Contemporary, Lightly Worked or Heavily Worked) best suits your home, we recommend watching our guidance video:
https://www.youtube.com/watch?v=PeRczKSS2q0

Oak is a natural product and each beam will vary slightly in:

• Colour
• Grain pattern
• Knots
• Surface cracks
• Character markings

Our character grade beams may contain natural splits and checks which can continue to develop as the timber acclimatises.

Although air-dried, oak may continue to shrink slightly as it adjusts to your property's temperature and humidity.

These characteristics are not faults — they are part of the beauty of real solid oak.

At Celtic Timber, sustainability is at the heart of everything we do. We source our timber from sustainably sourced certified forests, ensuring responsible management and protection of natural resources.

We also actively contribute to reforestation and rewilding projects across the UK, planting over 12,000 trees on our own land. By choosing our products, you’re supporting a company dedicated to reducing environmental impact and preserving the planet for future generations.

Learn more about how we ensure sustainability, here.

We offer a straightforward 30-day returns policy on all non-bespoke items.

If your order arrives damaged or incorrect, please contact us as soon as possible and we will arrange a replacement or agree an appropriate resolution.

To qualify for a refund or replacement, you must notify us within 30 days of receipt. Items must be returned unused and in their original packaging.

Return shipping costs are the responsibility of the customer, except where the item is damaged or supplied in error.

Read our full returns and refunds policy here.