Outdoor Living: Decks, Pergolas and Shelter

An outdoor room only gets used if it has sun and shelter. A generous deck in the wind or the shade sits empty, while a modest space that is warm and calm becomes the part of the house you live in most. So the first decisions are orientation and wind, not the size of the platform or the finish on the boards.

That order matters because the things that make an outdoor space work are the hardest to change later. You can add furniture, planting or a screen at any time, but you cannot move the deck into the sun or out of the wind once the house is built. This is why outdoor living deserves the same care as the rooms indoors, considered from the first concept alongside the plan. At Ecotectural we solve it around one table with the architect from the start, so the sun, the shelter and the connection to the house are worked out together rather than bolted on at the end. Good indoor design already turns on light and flow, and our guide to natural light and space in home design covers that thinking; outdoor living simply carries it past the glass.

Face the main outdoor space to the north for low winter sun, and place it on the sheltered side of the house, away from the prevailing wind. In Nelson Tasman that usually means a north or north-west aspect for the afternoon, screened from the wind that funnels off the sea and down the valleys.

Getting this right starts with reading the site before the plan is drawn: where the sun tracks across the seasons, where the wind comes from on a bad day, and how the land and neighbours shape both. In the southern hemisphere the winter sun sits low in the north and the summer sun climbs high, so a north-facing space catches warmth in July when you want it. Shelter is the other half. A deck can be tucked into an L-shaped plan, set behind a wing of the house, or protected by a solid screen or planting on the windward side, so it stays usable when the breeze picks up. Our guide to designing for the Nelson Tasman sun works through the sun path and orientation in detail, and the same site reading that positions your living rooms positions the deck beside them.

You need shade when the same space you want warm in winter becomes too hot in high summer. A pergola, adjustable louvres or a deep eave blocks the steep summer sun while still letting the low winter sun through, so one outdoor room works across the seasons rather than only in the shoulder months.

This works because of the sun path. The high summer sun can be intercepted by an overhead structure sized to your latitude, while the low winter sun slips underneath it and reaches the deck and the glass behind. Fixed slats set at the right angle do this passively; adjustable louvres let you open the sky in spring and close it down in February. A generous eave on the house does much of the same job for the space directly against the wall, and doubles as shelter from a passing shower. The same principle keeps the rooms behind the glass comfortable, which is the heart of passive cooling through a New Zealand summer: shade the glass from the outside before the heat arrives, rather than fighting it indoors afterwards.

Set the deck at the same level as the interior floor, so the threshold is flush rather than a step down. With a level threshold and wide doors that stack or slide clear, inside and outside read as one continuous room, and that single move does more than anything else to get the outdoor space used every day.

A step down, even a small one, quietly tells you that the deck is a separate platform you visit, not part of the living space. A flush threshold removes that line: the floor runs out through the glass, the eye carries on to the view, and the room feels larger in both directions. It does need careful detailing to keep water out, with the right fall, drainage and flashing designed in, which is exactly why it belongs on the drawings early rather than as a site fix. A flush threshold retrofitted later is expensive and rarely as clean. Thought about from the concept stage, it is simply how the house meets the ground. You can see this connection between living space and landscape across our design and build work.

Choose durable, naturally stable timber or a low-maintenance composite for the boards, with stainless or hot-dip galvanised fixings for the salt air. The coastal Tasman climate, sun, salt and driving rain, is hard on the cheapest option, so materials chosen for longevity repay the cost over the life of the home.

Naturally durable or thermally modified timber weathers gracefully and can be recoated; a quality composite trades that patina for very low upkeep. Whichever you choose, the fixings and the sub-structure matter as much as the surface: near the coast, stainless or hot-dip galvanised hardware resists the corrosion that quietly destroys standard steel, and the framing should be detailed to shed water and dry out. The same durability thinking applies to the walls that meet the deck, which is why cladding options for Nelson Tasman and the deck are best specified together, and why a genuinely coastal build is detailed for the salt from the outset. Every element is also assessed against the NZ Building Code for durability and weathertightness at consent. The table below sets out the four decisions that make an outdoor room work.

Outdoor living works when four things are right: an orientation that catches the winter sun, shelter from the prevailing wind, shade for high summer, and durable materials suited to the coast. Solve those on paper, with a level threshold connecting the deck to the house, and the outdoor room becomes a space you live in for most of the year rather than a platform you rarely visit.

None of it can be added convincingly once the house is built, which is why outdoor living belongs in the first concept, not the final selections. Ecotectural has designed and built architectural homes across Nelson Tasman since 2006, working the sun, shelter and thresholds out around one table with the architect from the start. If you are planning a home where the inside and the garden should feel like one place, the best first step is to arrange a consultation before the design is locked in.