Exterior window shading and overheating

Choose awnings, shades, shutters or exterior screens based on orientation, SHGC, wind, snow, egress and daylight needs.

VERT / GREEN

Start with west/south windows and a temperature log before buying motorized shading.

JAUNE / YELLOW

Exterior shading blocks solar gain before the glass but must remain compatible with wind, snow and emergency egress.

ROUGE / RED

Uncertain masonry/EIFS anchorage, blocked egress, large structure or fixed motorization: appropriate design/installation.

Guided triage

West-afternoon overheatingTest seasonal exterior shading before window replacement.Large fixed awningCheck anchorage, wind, snow and facade drainage.Shade blocks egressPreserve emergency egress and local requirements.Exterior motorizationPlan power, manual override and outage behaviour.

Tools / data

Orientation/SHGC
Temperature log
Facade anchorage details

What the professional checks

Assess solar gains
Verify wind/snow/anchors
Preserve drainage/egress

Official sources

CNRC — effets des dispositifs d’ombrage

Source check / vérification: 2026-08-22. Triage et planification seulement; les travaux réglementés restent aux professionnels requis.

Related path

Continue with the right tools

These links connect this page to the next useful checks and decisions without repeating the full content.

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