Shade and heat under Occitan sun
Toulouse summers punish unshaded glass. We treat shade, venting, and modest heat as one seasonal system so the garden room stays usable from June glare through January frost.
External shade before internal blinds
Heat stopped outside the pane is easier than heat fought inside. We specify exterior blinds, sail cloths, or deciduous vines on wires where the structure allows. Internal blinds still help with glare, but they should not be the only defence when the roof faces south toward open sky above the canal corridor.
Retractable systems let autumn light return without a permanent cave feeling.
Vent paths that actually move air
A single roof vent does little if the door stays shut. We plan high outlets and low inlets so hot air leaves while cooler air enters from the court. Insect screens matter near the Garonne in warm evenings; we keep them removable so winter drafts are not locked in.
Ceiling fans help only when the blade height clears hanging plants and pendant lamps.
40 percent density for east glass, 70 percent for west roof slopes. Soft sage colour to reduce contrast against Pink City brick from the street.
Winter warmth without roasting plants
Electric heaters aimed at seating zones beat blasting the whole volume. We keep plant benches away from direct heater wash and warn against propane indoors. Where underfloor loops exist, a separate thermostat for the garden room prevents the house system from overworking a glazed volume.
Thermal curtains on the house doorway reduce the night pull of cold air into living rooms.
Glass films and selective panes
Not every pane needs the same coating. We often treat roof glass more aggressively than vertical walls that face a shaded court. Films that cut heat while keeping colour honest matter when clients grow food plants or display art.
A shade-and-heat advisory visit with written priorities is €290 inside Toulouse; implementation drawings for installers add €450–€900.
Living with heatwave weeks
When the city posts extreme heat alerts, even good systems need behaviour: open early, close by late morning, water plants at dusk, and move soft seating off the hottest slab. We leave clients a one-page almanac card so guests know the ritual too.
That card has saved more cushions than any single product purchase.