A sauna and cold plunge pool in Lisbon and Cascais, over terracotta roofs and into the wind

The nortada and the cool pool

From June to September a steady north wind, the nortada, blows along the west coast. It keeps Lisbon and Cascais cooler than the Algarve, takes the edge off the afternoon and makes a roof terrace feel breezy. For a plunge pool that is helpful: the chiller rejects heat more easily, and the air is rarely at its worst. For a cabin it matters the other way round: glass faces away from the wind where it can, and a loose pergola becomes a sail. We draw with the wind in mind.

Lisbon, Instituto Geofísico (IPMA climate normal 1991–2020): a mean daily maximum of 28.2 °C in July and 28.8 °C in August, a January mean minimum of 8.6 °C and 794 mm of rain a year. A moderate summer on paper; the days that decide the size of the chiller are the ones above the average, so we still design for 38–40 °C.

Rooftops, heritage and the crane

Many of the best terraces sit on top of old buildings in tiled hillside streets: Alfama, Graça, Príncipe Real, Chiado. A cabin and a pool need three things there: the condominium's consent, a structural note on the slab and a plan for the crates. The streets are steep and narrow, so the delivery may mean a crane or a hoist on the public way, with the câmara's permission. Heritage protection in the historic centre adds a layer of questions about what is visible from the street. Ask early; we draw the least visible layout.

Patios and townhouses

Lisbon townhouses have patios, tiled walls and a lemon tree in a pot. A two-seat cabin and a free-standing ice bath fit a patio of about 4 × 4 m, and the walls help with privacy and noise. A chiller hums in a tiled yard, so the machine goes away from windows. See made-to-measure saunas and free-standing ice baths.

Cascais, Estoril and the stone-pine villas

Along the coast, villas have gardens, stone pines and the Atlantic at the end of the road. A garden cabin and a hot-and-cold pair suit them; pines drop needles and roots that must be avoided, and salt reaches everything close to the sea. 316 stainless, ventilated cladding and covers that one person can lift. Salt air, timber, glass and steel has the checklist. The Sintra hills just behind are cooler and damper, and a cabin there needs better ventilation.

Hotels, clubs and clinics in the capital

Lisbon's hotels, padel clubs and clinics are the commercial side of the brief: courtyard saunas in converted palaces, recovery rooms beside padel courts, longevity suites with a glass cabin and a stone pool. See boutique hotels, padel and racquet clubs and clinics and longevity.

A sample for a Lisbon roof terrace

What stops a Lisbon roof project

Tiles, azulejos and finishes that belong to Lisbon

Lisbon is a city of tile: blue and white panels, glazed facades, hexagonal floors. A pool in sea-glass or white mosaic sits comfortably among them, and a cabin in pale ash lets the tiles be the colour. We avoid anything that competes with them: no dark glass, no black frames, no glossy white.

A year in Lisbon

Five questions for the condominium

1. Is a free-standing structure allowed on the roof, and in what position?
2. What load can the slab carry, and who signs it off?
3. Are crane operations allowed, and on which days?
4. Do the rules on noise cover a chiller, and at what hours?
5. Does the building's insurance need to be told?

The roof-terrace sample is a four-seat cabin and a round pool from the price list; the kit builder shows the alternatives.