Flat Roof Wooden Pergola with Open Slatted Design - Modern Garden Pergola Structure

With its strong horizontal lines and open slatted roof, this pergola delivers a minimalist look while still offering practical shade and comfort for everyday outdoor living.

Built from high-quality, pressure-treated timber, the structure is engineered for long-term performance in all weather conditions, making it a reliable and stylish addition to your outdoor setup.

Open Roof for Light & Atmosphere

The flat, open roof design allows sunlight to filter through naturally, creating a relaxed balance of shade and openness. It’s ideal for enjoying warm days outdoors while still offering enough coverage for dining, seating, or entertaining areas.

This design also lends itself perfectly to personalisation—whether that’s trailing plants, outdoor lighting, or decorative features that evolve with your garden.

Strong, Modern Construction

This unique pergola uses 6" x 6" posts and 4" x 2" beams to provide outstanding strength and stability once securely fixed.

The rough-sawn timber finish adds texture and character, giving the pergola a premium, natural appearance.

Key Benefits:

• Flat roof pergola with open slatted design

• Pressure-treated timber for rot resistance and low maintenance

• Heavy-duty posts and beams for excellent structural strength

• Supplied in kit form for straightforward installation

• Bespoke sizing available to suit your exact space

• All fixings included
  
  

Made to Fit Your Garden

With a wide range of standard sizes and custom dimensions available, this pergola can be tailored precisely to your layout—whether you’re enhancing a compact patio or defining a larger outdoor area.

Installation & Safety Guidance

This pergola is not suitable for freestanding installation. For safety and long-term stability, it must be securely anchored into the ground using an appropriate fixing method. Correct installation ensures optimal performance and durability.

Specifications Overview

• Depth (Back to Front): 1.8m to 4.2m (custom sizes available)

• Width (Front): 1.8m to 4.2m

• Post Height: 2320mm

• Overall Height: 2320mm

• Post Size: 150mm x 150mm

• Roof Rafters: 100mm x 47mm

• Ring Beam: 150mm x 47mm

• Collars: 100mm x 47mm

• Roof Type: Open slatted

• Front & Rear Overhang: 300mm

• Side Overhang: 300mm

• Timber Finish: Rough sawn

• Treatment: Fully pressure treated

• Fixings: Included

• Guides: Written instructions and video install guide

• Approx. Weight: 240kg

FAQs – Flat Roof Wooden Pergola with Open Slatted Roof

Product

Are all pergola components treated for outdoor use?
Yes. All structural timber elements are fully pressure treated to help protect against rot, moisture, and insect damage. Roofing components may vary depending on the configuration selected.

Can this pergola be made to custom sizes?
Yes. Bespoke sizing is available, allowing the pergola to be manufactured to fit your exact garden or patio dimensions.

Installation

Does the pergola arrive fully assembled?
No. The pergola is supplied in kit form for easier transport and handling. Detailed written instructions and a video installation guide are provided to support both DIY installation and professional fitting.

Are fixings included with the pergola kit?
Yes. All necessary fixings required for assembly and installation are included with your order.

Can the pergola be installed as a freestanding structure?
No. For safety and stability, the pergola must be securely fixed into the ground using an appropriate fixing method.

Aftercare & Maintenance

Can I paint or stain the pergola?
Yes. Once the timber has fully dried, you can apply a water-based paint, stain, or protective finish. Applying UV protection beforehand is recommended to maintain the appearance of the timber.

What ongoing maintenance is required?
To maintain performance and appearance, we recommend treating the pergola approximately every 6 months with a suitable wood oil and periodically cleaning away dirt and debris.

How long can I expect the pergola to last?
With correct installation and regular maintenance, a pressure-treated wooden pergola can typically last between 10 and 20 years, depending on exposure and care.