Douglas fir tongue and groove 300cm (10/24x145mm)

Douglas Fir Tongue and Groove 300cm (10/24x145mm)

The Douglas Fir Tongue and Groove 300cm (10/24x145mm) is a high-quality softwood cladding board known for its strength, stability and natural appearance. Douglas fir is widely used in construction thanks to its excellent structural performance and attractive grain, making it suitable for both functional and decorative timber applications.

With a length of 3000mm and a profile of 10/24mm thickness combined with a 145mm face width, this board offers a slightly narrower and refined cladding solution ideal for detailed façade and interior work.

Key Benefits

• Strong and durable Douglas fir softwood.
• Narrower 145mm profile for a refined appearance.
• Tongue and groove system for a tight, seamless fit.
• Suitable for structural and decorative applications.
• Stable timber with good long-term performance.
• Easy to machine, treat and install.
• Suitable for interior and exterior use.

Applications

This Douglas fir tongue and groove cladding is suitable for a wide range of projects, including:

• Facade cladding
• Garden sheds
• Summer houses
• Garden rooms
• Cabins
• Exterior wall cladding
• Interior feature walls
• Timber construction projects

Specifications

Installation

Install the boards onto a straight and ventilated timber framework to ensure long-term performance and durability. Maintain sufficient airflow behind the cladding and use stainless steel or galvanised fixings to prevent staining and corrosion. Always allow boards to acclimatise before installation.

Maintenance

Douglas fir is naturally durable but benefits from protective treatment. Apply paint, stain or wood oil to protect against moisture, UV exposure and weathering. Without treatment, the wood will naturally weather to a silver-grey patina over time.

Related Products

Complete your project with our decking screws and garden fencing.

How to Install Douglas Fir Tongue and Groove Cladding

1. Prepare a straight and ventilated timber subframe.
2. Ensure adequate airflow behind the cladding.
3. Start installation from the bottom upwards.
4. Connect boards using the tongue and groove system.
5. Fix securely with stainless steel or galvanised screws.
6. Maintain consistent alignment for a professional finish.
7. Treat all cut ends before installation.

Frequently Asked Questions

Is Douglas fir suitable for exterior use?

Yes. It is suitable for outdoor cladding when properly installed and maintained.

Can it be painted or stained?

Yes. It accepts paint, stain and protective finishes very well.

What does 10/24mm mean?

This refers to the profiled thickness including the tongue and groove section.

Can it be used indoors?

Yes. It is ideal for interior feature walls and decorative applications.

Which fixings should be used?

Use stainless steel or galvanised fixings for long-term durability and corrosion resistance.