Pergola: A comprehensive guide to the best materials

What is a bioclimatic pergola?

Before we talk about materials, let’s recap what distinguishes a bioclimatic pergola from a traditional one.

A bioclimatic pergola is fitted with adjustable slats — usually motorised — that open and close depending on the weather. In summer, they tilt to allow ventilation. In rainy weather, they close tightly. It’s a genuine outdoor living space that can be used all year round.

• Motorised or manually operated adjustable slats
• Rainwater drainage integrated into the uprights
• Can be fitted with LED lighting, awnings and infrared heating
• Compatible with glazed side walls

The 3 main materials for a pergola

Let’s now look at the characteristics of each material, their advantages and their practical limitations.

Wood: natural and warm

Wood remains the classic choice for garden pergolas. It offers a warm, natural aesthetic that aluminium cannot truly replicate. The most commonly used woods are treated pine, oak, teak and larch.

• Main advantage: blends perfectly into a natural or rustic garden
• Good natural thermal insulation
• Purchase price often lower than aluminium
• Disadvantage: annual maintenance required (wood stain, oil, paint)
• Susceptible to fungi, insects and changes in humidity
• Shorter lifespan if poorly maintained (10–15 years vs 30+ for aluminium)

Aluminium: the champion of bioclimatic pergolas

Aluminium is now the material of choice for bioclimatic aluminium pergolas. Why? Because it combines all the technical advantages without the drawbacks of wood or steel.

• Lightweight: makes installation easier and reduces the load on load-bearing walls
• Durability: 30 to 50 years without rust or rot
• Virtually no maintenance: a simple wash with water is all that’s needed
• Compatible with electric motorised systems (slats, awnings, LEDs)
• Wide choice of RAL colours: suits all architectural styles
• Ideal for a bioclimatic lean-to pergola fixed to a façade

Steel: robust but heavy

Steel is used for pergolas with large spans (over 6 metres) or industrial structures. It is highly resistant to strong winds but has significant drawbacks for standard residential use.

• Maximum structural strength for large areas
• Price varies depending on thickness and finish
• Heavy: requires solid foundations
• Susceptible to corrosion if the anti-rust treatment is applied incorrectly
• Not well suited to motorised bioclimatic pergolas (too heavy for the slats)

Comparison table: timber vs aluminium vs steel

For a bioclimatic pergola, aluminium is clearly the best choice. For a traditional pergola on a tight budget, treated timber remains an excellent option.

Which is a better insulator: wood or aluminium?

This is one of the most frequently asked questions. The answer depends on how you intend to use your pergola.

Wood: the best natural insulator

Wood is naturally a good thermal insulator. Its natural fibres slow down heat transfer. For a traditional garden pergola without motorised controls, wood offers slightly better thermal comfort.

Aluminium with a thermal break (TB)

Pure aluminium is an excellent thermal conductor — which is bad news for insulation. However , reputable manufacturers now incorporate a thermal break into their profiles: a polyamide barrier that cuts off the transfer of cold or heat between the outside and the inside.

• Aluminium without a thermal break: the structure feels cold in winter
• Aluminium with thermal break: acceptable thermal performance for a pergola
• Tip: always check for a thermal break before buying

The attached bioclimatic pergola: the best choice for the home

The bioclimatic lean-to pergola is fixed to the wall of your house on one side and rests on posts on the other. This is the most popular configuration as it makes the best use of the patio space and blends naturally with the architecture of the house.

Why is the attached pergola more practical?

• Space-saving: no posts on the wall side
• A natural extension of the living room or kitchen
• Easier electrical connection (close to the house)
• Extra protection against side winds
• Adds value when selling the property

Recommended material for an attached pergola

For a bioclimatic lean-to pergola, aluminium is recommended for several reasons: its light weight reduces the load on the façade, its UV resistance prevents marks on the wall, and its colours blend easily with modern façade finishes.

Affordable bioclimatic pergola: how to find the best value for money?

The price of a bioclimatic pergola varies enormously: from €2,000 for an entry-level model to over €15,000 for a bespoke top-of-the-range model. How can you make sure you make the right choice?

The factors that determine the price

• Quality of the aluminium profiles (thickness, alloy)
• Inclusion of a thermal break
• Motorisation (manual, remote-controlled, smart home integration)
• Size and span (beyond 4 m, the price increases significantly)
• Options: integrated LED lighting, blinds, rain or wind sensors
• Installation by a professional or as a self-assembly kit

Affordable bioclimatic pergola: our recommendations

• Opt for a self-assembly kit if you’re handy: save 30–50 per cent on installation
• Compare several quotes (at least three) from local fitters
• Check the warranty: a minimum of 5 years on the structure, 2 years on the motorised system
• Be wary of very low prices: aluminium that is too thin may bend under the weight of snow
• Take advantage of tax incentives: some models qualify for 10 per cent VAT on renovation projects

FAQ: the questions most frequently asked by our customers

Conclusion: which material should you choose for your pergola?

Here’s a simple summary to help you decide:

• You want a motorised bioclimatic pergola → Aluminium, without a doubt
• You have a natural garden and a tight budget → Autoclave-treated timber
• You’re looking for a pergola attached to your house → Aluminium with thermal break
• You want an affordable bioclimatic pergola → Self-assembly aluminium kit
• If you need a large span (>5 m) → Steel or reinforced aluminium