A large deck becomes more practical when it is divided into distinct areas and furniture, balustrades, sunlight, wind and privacy are planned together. It then feels cohesive and usable rather than simply large and empty.
Start by thinking about how you want to use the patio, and then assign separate areas to, for example, a dining area, a lounge, and a sunbathing area. In a large space, the sense of space is more important than the number of square metres—each area needs a clear function and a natural connection to the rest of the patio.
How do you create a sense of space on a large deck?
Divide the large deck into distinct areas for dining, lounging, sunbathing and growing plants. This gives each area a purpose, so the open timber deck begins to feel like several useful outdoor rooms rather than one large, uninterrupted surface.
When planning a large patio, the different areas don't need to be separated by walls. A railing, plants, a difference in elevation, a rug, or a pergola can create sufficient boundaries while keeping the outdoor space open and cohesive.
| Zone | Location | What it needs |
|---|---|---|
| Dining area | Near the door to the kitchen | Firm surface, ideally with shade |
| Lounge area | Sheltered position, ideally in a corner | Wind protection and soft furnishings |
| Sunbathing area | An area that catches the afternoon or evening sun | Open, nothing blocking the view |
| Cultivation | Along the balustrade | Allow for water access and additional weight |
| Hot tub or bathing area | Separate section | Reinforced supporting structure |
How do you plan the railing around a large deck?
Don’t automatically plan the same solution for the entire patio. Instead, start by considering what each side needs to address—an unobstructed view, more privacy from the neighbour, and better shelter where the wind is strongest.
The railing can still visually tie the deck together through recurring materials, colours, or proportions, even when different sections serve different functions.
Let the function guide your choices without losing sight of the overall design
Keep a clear line of sight
On the side you want to look out toward, a more open or see-through railing might be the best choice. That way, the garden or landscape will continue to feel like part of the outdoor space.
Create privacy
Where overlooking is a problem, a more enclosed design or a privacy screen can be a better choice. You do not need to enclose the whole deck to create privacy where it matters.
Create more shelter from the wind
On the side exposed to the wind, a separate windbreak be the right solution. It doesn’t have to be the same system as the railing on the rest of the deck for the whole design to work.
Sketch the deck and its furniture to scale, and start by rearranging the dining area, lounge, and other zones. This will make it easier to see where an unobstructed view is important, where privacy is needed, and which side needs better shelter.
What requirements apply to a balustrade on a large deck?
A railing should provide adequate protection where there is a risk of falling from the deck. Consider drop height, how the space is used, and what is below when planning the railing’s height and design.
Check which safety requirements apply to the planned deck. The railing's design, infill, and fixings must be adapted to its location and the loads it is intended to withstand.
In that case, the openings and the climbing protection become especially important
Child safety isn't just about the height of the railing. Openings, features that children can climb on, and objects next to the railing also need to be checked.
Prevent climbing
Avoid profiles, crosswise details, and other design features that provide natural footholds and make it easier for children to climb the railing.
Check the openings
Check the gaps between posts, the glass, the balusters and the bottom edge. The openings must be designed so that children cannot squeeze through or get stuck in the railing.
Inspect the area around the railing
Furniture, planters, and changes in level next to the railing can make it easier to climb over. Therefore, check the safety of the deck even after it has been fully furnished.
How does wind load affect the spacing between posts on a large deck?
Wind loads may require that the post spacing be reduced, especially on long sections of railing with dense infill and in locations exposed to wind. The greater the load, the more important it is that the railing’s design and fixings are adapted to the location.
How close together the posts need to be depends on the railing's design, infill, and location. Follow the railing system's instructions and make sure that the post spacing and fixings are appropriate for the load at the installation site.
A larger solid area catches more wind
Less air can pass through
Greater forces on the railing
Shorter post spacing may be necessary
This is especially true for long sections with dense infill and in locations where the railing is exposed to strong winds.
Does a large deck require a building permit?
A large deck may require a building permit or other approval, depending on how it is built. In particular, the height above ground, the location on the lot, and the distance from the house can affect what you need to check before construction begins.
It is also important to distinguish between the deck itself and what you build around it. An open balustrade used as a fall protection and a solid privacy screen may be subject to different requirements.
The deck and a dense privacy screen can be interpreted in different ways
Height and location have an impact
The height of the deck above ground level, its location near the house, and the design of the structure can affect whether planning permission or other approval is required. Also take into account ground levels and other conditions on the lot.
May be subject to other requirements
A solid screen to block the view or the wind can be considered separately from the deck and the railing. The height, placement, and design of the screen may therefore affect whether you need planning permission or other approval.
Always check the conditions for your property
The characteristics of the lot, the scope of the project, and what you plan to build may affect which permits are required. Therefore, check with the relevant authority for the most up-to-date information before ordering materials or beginning construction.
What should you check before building a large deck?
Above all, check the layout, zones, heavy loads, railings, wind conditions, and planning permission before construction begins. That way, the deck’s design and various features can be planned together instead of having to be addressed after the fact.
Seven Things to Keep in Mind Before You Start Building
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Did you draw the deck and its furniture to scale?
Place the dining table, lounge area, grill, and other large pieces of furniture on the sketch. That way, you'll see how much space each item actually needs before anything is built.
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Are the zones arranged based on sunlight, views, and privacy?
Decide where you'd prefer to sit in the sun, where you need more privacy, and in which direction you want to keep the view open.
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Is the dining area conveniently located?
Feel free to place it near the kitchen exit. The shorter distance makes a big difference when carrying food, dishes, and other items between the kitchen and the deck.
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Is the deck designed to support heavy loads?
If, for example, you plan to install a hot tub, that section of the deck will need to be designed to support the extra weight. Plan the placement before installing the decking.
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Has each side been given a solution suited to its needs?
Determine where you want an unobstructed view, where you need more privacy, and whether any part of the deck needs a separate windbreak.
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Is the balustrade's design adapted to the wind?
Long sections of guardrails with dense infill may be subject to greater wind loads. In exposed locations, shorter distances between posts may therefore be necessary.
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Have you checked the regulations that apply to the property?
Check the permitting requirements before ordering materials or starting construction, especially if the project also includes a solid privacy screen or other major additions.
Which railing is right for your large deck?
Once you've decided on the layout and dimensions of your deck, you can choose a railing based on the view, privacy, wind, and the look you want to create around your outdoor space.
What do you need to know when planning a large deck?
When planning a large deck, consider how to divide the space, where the structure may need reinforcement and how balustrades, wind, child safety and planning permissions affect the design. Here are brief answers to some common questions.
Hur undviker jag att en stor altan känns tom?
Divide the space into zones using railings, plants, changes in level, rugs, or a pergola. A large, open space does not automatically feel like a room just because it is furnished.
Where does the deck need to be reinforced?
This is especially true where very heavy items will be placed, such as a hot tub. A filled hot tub can weigh several metric tons, and the entire weight is concentrated on a relatively small area of the deck. The location should therefore be determined early on so that the structure can be reinforced where necessary.
Can I use different balustrades on different sides of the deck?
Yes. Different parts of the deck can have different railing or privacy solutions depending on your needs. On the side facing the view, you might want a more open solution, while another side may require more privacy or windbreak. The solutions do not have to be based on the same system.
Does the size of the deck affect the wind load on the railing?
A large deck often has longer railing spans. Long spans with solid infill, such as glass, catch more wind; therefore, in windy locations, shorter distances between posts may be necessary.
How high should the railing on the deck be?
The height of the railing should provide adequate protection based on drop height, how the deck is used, and the conditions below. Check the applicable design requirements and choose a balustrade system that is suited to the site’s conditions.
What are the rules if young children are on the deck?
If children are allowed on the deck, the railing must be designed so that it is difficult to climb and so that any openings do not pose a risk of someone crawling through or getting stuck. Also check for furniture and other objects near the railing that could be used as climbing aids.
Do you need a building permit for a large deck?
This depends, among other things, on the deck’s height, location, and design. A closed privacy screen may be subject to different requirements than the deck itself and an open guardrail. Therefore, check whether a building permit or other approval is required before you order materials or begin construction.
