Outdoor LivingJuly 2, 2024 16 min read

Outdoor Living: Decking, Pergolas & Garden Structures in Cornwall

Premium decking, pergolas, and garden structures built to withstand the Cornish weather and extend your living space into the garden.

Rethinking the Garden as a Room

Cornwall's mild climate means we can use our gardens for more of the year than almost anywhere else in the UK. With the right structures, an outdoor space becomes an extension of the home — a room without walls where meals are eaten, evenings are spent, and the boundary between inside and out is softened. This is the promise of well-designed outdoor living.

The elements that make this possible are familiar: decking to create a level, usable surface; pergolas and gazebos to provide shelter and structure; planters and screens to define the space; and lighting to extend its use into the evening. What transforms these from a collection of features into a genuine outdoor room is thoughtful design and quality construction.

This guide explores how to create an outdoor living space that genuinely extends your home into the garden, with materials and details suited to the Cornish climate.

Decking: The Foundation of Outdoor Living

Decking is the starting point for most outdoor living spaces because it provides a clean, level, usable surface that defines the area and lifts you out of the damp of the lawn. The choice of material is the first and most important decision, and it should be driven by location and maintenance appetite as much as by appearance.

For coastal Cornish gardens, we recommend either sustainably sourced hardwood (iroko or balau) or high-quality composite. Hardwood offers natural beauty and exceptional durability, developing a silver-grey patina if left untreated or maintaining its rich colour with annual oiling. Composite offers near-zero maintenance and consistent appearance, with modern ranges that look convincingly natural.

The substructure is as important as the surface. We build on treated timber joists set on concrete pads or a screeded base, with adequate ventilation beneath to prevent moisture build-up. The deck is laid with a slight fall to shed water, and boards are spaced for drainage and ventilation. A well-built deck is solid underfoot with no bounce, and it will stay that way for decades.

Pergolas: Shelter, Shade, and Structure

A pergola is the architectural element that turns a deck or patio into a defined outdoor room. By providing overhead structure, it creates a sense of enclosure without walls, offers a framework for shade and planting, and gives the space a focal point and a sense of purpose. It is the single most transformative addition to an outdoor living area.

Pergolas can be simple or elaborate. A basic timber pergola — four posts and a beam grid — gives structure and a frame for climbing plants. A more substantial pergola with a solid or louvered roof provides genuine shelter from sun and light rain, extending the usable season. A fully enclosed pergola with sides and lighting becomes a genuine outdoor room usable for much of the year.

We build pergolas in sustainably sourced softwood (pressure-treated and painted for durability) or hardwood for a more premium, longer-lasting structure. The proportions are critical — posts should be substantial enough to look intentional (typically 150mm or 200mm), and the height should relate to the surrounding architecture. A well-proportioned pergola looks designed; a spindly one looks like an afterthought.

Garden Rooms and Gazebos

For those who want a fully enclosed outdoor space, a garden room or gazebo provides a weatherproof structure that can be used year-round. Unlike a pergola, which is open to the elements, a garden room has a solid roof and partial or full walls, giving genuine protection from wind and rain while remaining connected to the garden.

Garden rooms can serve many purposes: a sheltered seating area, an outdoor dining room, a home office, or a studio. The construction is essentially a small timber building — a timber frame, insulated walls and roof, weatherproof cladding, and windows or glazed panels. We build them to the same standard as the main house, so they are warm, dry, and comfortable in all seasons.

The siting of a garden room is important. It should relate to the main house (close enough to be convenient, far enough to feel separate), take advantage of the best views and the sun, and be screened from less attractive aspects. We help clients find the right position and design the structure to suit its setting and its intended use.

Planters, Screens, and Defining the Space

An outdoor room needs definition, just as an indoor room does. Planters, screens, and low walls create the boundaries that make a space feel intentional rather than arbitrary. They also provide privacy, screen unsightly views, and create microclimates that make the space more comfortable to use.

Built-in planters, constructed from the same timber as the decking or in a complementary material, give a cohesive look and provide a home for the planting that softens and animates the space. Screens — timber slat panels, trellis, or solid panels — define edges and create shelter from wind without the permanence of a wall. Low walls with integrated seating combine definition with function.

The key is to treat these elements as part of a single design rather than as separate purchases. When the decking, pergola, planters, and screens share materials and proportions, the whole space reads as one considered design. This coherence is what makes an outdoor living space feel like a genuine extension of the home.

Outdoor Lighting

Lighting is what extends the use of an outdoor space from daylight hours into the evening, and it is often the difference between a space that is used and one that is not. A well-lit deck or pergola is inviting after dark; an unlit one is abandoned as soon as the sun goes down.

We design outdoor lighting in layers. Task lighting — downlights in the pergola, step lights on the deck — provides safety and function. Ambient lighting — low-level washes, uplights on planting, festoon lights — creates atmosphere. And accent lighting — spotlights on architectural features, underwater lights in water features — adds drama. The combination, all dimmable and on separate circuits, gives full control over the mood.

All outdoor lighting must be rated for external use and installed to the appropriate electrical standards. We coordinate all outdoor electrical work with qualified electricians, ensuring that the installation is safe, compliant, and built to withstand the Cornish weather.

Materials for the Cornish Climate

The Cornish climate demands materials chosen with care. Salt-laden coastal air accelerates corrosion and the degradation of finishes; persistent moisture encourages rot and algae; and UV, intensified by reflection off the sea, breaks down surface treatments. Materials that perform well inland can fail quickly on the Cornish coast.

For timber, this means specifying durable species (hardwoods or pressure-treated softwood) and applying appropriate finishes. For metalwork, it means stainless steel or galvanised and powder-coated fixings. For all materials, it means designing for drainage and ventilation so that moisture does not accumulate. These are not optional refinements in Cornwall; they are essentials.

We have built outdoor structures across Cornwall for years, and we have learned which materials and details stand up to the climate and which do not. This experience informs every outdoor living project we undertake, so that the structures we build give years of pleasure rather than seasons of maintenance.

Integrating with the Garden

An outdoor living space should not feel imposed on the garden but integrated with it. The transition from deck to lawn, from pergola to planting, should be gradual and natural, so the built elements and the garden enhance each other rather than competing. This integration is what makes the difference between a structure in a garden and a garden with a structure.

We work with the existing garden — its levels, its planting, its views — to site and design outdoor structures that belong. Sometimes this means working around a mature tree; sometimes it means framing a particular view; sometimes it means screening an unattractive boundary. The garden is the context, and the structure is the response to it.

For clients who are also rethinking their garden, we can coordinate with landscape designers to ensure the hard and soft landscaping work together from the start. This collaborative approach gives the most cohesive results and avoids the disjointed look that comes from designing structures and planting in isolation.

Making It Yours

An outdoor living space is a personal thing. It should reflect how you want to use your garden — for entertaining, for relaxing, for family meals, for quiet evenings. The best spaces are designed around these uses, with the right balance of shelter, seating, and surface for the way you live.

We start every outdoor living project with a conversation about how the space will be used, by whom, and at what times of day and year. From that conversation comes a design that is genuinely tailored, rather than a generic deck-and-pergola package. The result is a space that is used and loved, not just built and forgotten.

If you are thinking about extending your home into the garden, we would be glad to discuss the possibilities. The Cornish climate gives us more opportunity for outdoor living than almost anywhere, and with the right design and construction, that opportunity can be realised for much of the year.

Frequently Asked Questions

Quick answers to the questions we hear most about Outdoor Living: Decking, Pergolas & Garden Structures in Cornwall.

What is the best decking material for coastal Cornwall?+

For coastal gardens, sustainably sourced hardwood (iroko or balau) or high-quality composite are best. Both resist moisture, rot, and salt far better than softwood, which needs more frequent treatment near the coast.

Does a pergola provide shelter from rain?+

A basic open-beam pergola provides shade but not rain shelter. A pergola with a solid or louvered roof provides genuine shelter from sun and light rain, extending the usable season considerably.

Do I need planning permission for a garden room?+

Many garden rooms fall under permitted development, but size, height, and proximity to boundaries affect this. We advise on planning considerations as part of the design process.

How long do outdoor timber structures last in Cornwall?+

With durable species, proper treatment, and good design for drainage and ventilation, quality outdoor timber structures last 15–25 years or more. Hardwood and composite last the longest with the least maintenance.