Pergolas and gazebos both add outdoor living space, but they suit different gardens and different needs. Here's an honest comparison to help you choose.
What Is a Pergola?
A pergola is an open overhead structure supported by posts, with horizontal beams and cross-rafters forming a roof framework. It provides partial shade and can be used to define an outdoor dining or seating area, frame a garden path, or create a sheltered link between the house and a garden building. Because the roof is open, a pergola does not provide full weather protection — though roof panels, polycarbonate sheets or retractable canopies can be added to increase shelter.
What Is a Gazebo?
A gazebo is a freestanding structure with a solid or semi-solid roof, typically octagonal or square in shape, with open or partially open sides. Unlike a pergola, a gazebo provides full overhead shelter from rain and direct sun. Gazebos are well suited to gardens where the structure will be used as a destination — a sheltered seating spot, an outdoor bar or a focal point in the landscape.
Shelter and Usability
If weather protection is your priority, a gazebo wins outright — the solid roof keeps you dry in light to moderate rain. A standard pergola offers shade from sun but little protection from rain. However, a pergola fitted with a louvred or polycarbonate roof panel system bridges the gap and is increasingly popular for year-round outdoor dining. Think about how you actually want to use the space, and in what seasons, before deciding.
Appearance and Garden Fit
Pergolas tend to suit longer, narrower spaces and work well attached to the house wall to create a covered terrace. They have a lighter, more architectural appearance and can be dressed with climbing plants to soften the structure over time. Gazebos suit larger, more open gardens and work best as freestanding features positioned away from the house. Their presence is more prominent — which can be a positive if you want a strong focal point or a drawback in a smaller garden.
Materials and Longevity
Both structures are available in timber, powder-coated aluminium or composite materials. Softwood pergolas are the most affordable but require regular treating or painting to prevent rot. Hardwood and composite options last longer with less maintenance. Aluminium gazebos and pergolas require virtually no maintenance and are particularly well suited to the UK climate. Expect a quality timber structure to last 15–25 years with proper care; aluminium structures typically last 25 years or more.
Cost Comparison
In the Hertfordshire area, a quality timber or aluminium pergola typically costs from £2,500 to £6,000 supply and install depending on size and specification. A freestanding gazebo ranges from £3,000 to £8,000 installed. Larger bespoke structures, louvred pergola systems or those with integrated lighting and electrical connections cost more. Always obtain a written quotation that includes groundwork, fixings and any electrical work separately.