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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V14

Systems to check before closing the work

V14 connects envelope, air, fire, structure, water and code instead of treating each project in isolation.

Renovation dependenciesEnvelope and condensationLoad-bearing walls and openingsHydronic and radiant heatCode versions

V18

Specialized diagnostics to verify

V18 connects systems that become costly or regulated when a primary project triggers them.

Basement window well + egress

V19

Edge systems to integrate into the project

V19 covers interfaces that become important when multiple home systems interact.

Skylight/tubular daylighting

V27

Project risks and overlooked interfaces

V27 connects payment, water, envelope, ventilation and jobsite details that often create costly surprises.

Safety glazing, showers and guardsTemporary weather protection during renovation

V29

Household safety and compliance details

V29 connects smaller risks that often fall between finishes, appliances, plumbing and local code.

Sealant joints, backer rod and movementCorded window coverings and child safety

V30

Shared, access and specialized interfaces

V30 connects projects where multiple systems, owners or rules meet.

Windows in masonry openings

V31

Commissioning and everyday safety

V31 helps verify systems after work and document the values that make a home safer to operate.

Windows and child fall prevention

V32

Post-disaster and legacy systems

V32 connects contamination, storm damage, legacy materials and recommissioning before rebuilding.

Storm/tree impact: structure, re-entry and stabilization