Determine Egress Window Location
An egress window is a life-safety requirement for any bedroom. Strategic placement ensures code compliance, rescue access, and enhances your attic's livability.
Why Egress Window Location Matters
Building codes require egress windows in bedrooms for life safety - they provide an escape route during fires and allow firefighters to rescue occupants. In attics, sloped ceilings complicate placement since windows must meet specific size requirements and be accessible from inside. The location you choose affects whether you need an expensive dormer, how the room can be furnished, and the home's exterior appearance. Careful planning now prevents costly changes during construction or failed inspections.
Tools & Materials You'll Need
Step-by-Step Guide
Understand Egress Requirements
Egress windows must meet specific dimensional requirements:
IRC Egress Window Requirements:
- *Minimum opening area: 5.7 square feet
- *Minimum opening height: 24 inches
- *Minimum opening width: 20 inches
- *Maximum sill height: 44 inches from floor
- *Operable without tools: Must open easily
Note: Local codes may be stricter. Check with your building department before finalizing plans. Some jurisdictions require larger openings.
Evaluate Roof and Wall Options
Assess where an egress window can physically be installed:
Gable End Wall (Easiest)
Vertical wall at roof peak. Easiest for window installation. May already have a window that needs enlarging. No dormer required.
Existing Dormer
If you have a dormer, evaluate if window can be enlarged to meet egress. Often the least expensive option if structurally feasible.
New Dormer Required
If sloped roof is only option, a shed or gable dormer creates vertical wall space. Adds $8,000-20,000 but also adds headroom and light.
Egress Skylight (Rarely Works)
Special egress skylights exist but are expensive ($2,000-4,000) and may not meet code on steep roofs. Verify with building department first.
Consider Exterior Rescue Access
The egress window must be accessible from outside for fire rescue:
- *Ground access: Ladder must be able to reach window from ground
- *Clear approach: No trees, power lines, or structures blocking access
- *Avoid garages: Windows over garage roofs may not be accessible
- *Safe landing: Exterior landing area should be clear and level
Fire Department Tip: Call your local fire department for guidance. They can advise on rescue access requirements and may review your plans.
Plan Interior Room Layout
Window location affects how the bedroom can be used:
Interior Considerations:
- *Window must be reachable within seconds from anywhere in room
- *Avoid placing bed or large furniture in front of egress window
- *44-inch maximum sill height limits placement on sloped walls
- *Consider window as a design feature - views, natural light
- *Plan for window treatments that don't impede opening
Choose Window Style
Select a window type that meets egress and works for your space:
Casement Windows (Best for Egress)
Hinged on side, swing fully open. Entire opening is clear for escape. No sash to climb over. Crank operation meets "no tools" requirement.
Double-Hung Windows
Traditional style, both sashes operate. Must be sized larger since only half the window opens at once. Good for matching existing home style.
Awning Windows (Limited Use)
Hinged at top. Rarely meet egress requirements due to limited opening angle. Not recommended for primary egress.
Pro Tips
- ✓Verify window "clear opening" dimensions, not just frame size - manufacturers provide this spec
- ✓If adding a dormer, size it to accommodate the egress window plus additional light
- ✓Consider prevailing winds and sun exposure when choosing window wall
- ✓Take exterior photos and share with architect or contractor for design integration
- ✓Check HOA requirements - some neighborhoods have restrictions on dormers and window styles
Frequently Asked Questions
What are the egress window requirements for an attic bedroom?▼
Egress windows must have a minimum opening of 5.7 square feet, with a minimum height of 24 inches and minimum width of 20 inches. The sill height cannot exceed 44 inches from the floor. These requirements ensure occupants can escape and firefighters can enter in emergencies.
Do I need a dormer for my attic egress window?▼
You may need a dormer if your roof slope is too steep to install a window that meets egress requirements. Standard skylights rarely qualify as egress. A shed or gable dormer creates vertical wall space for a proper egress window while adding headroom and natural light.
Can a skylight be used as an egress window?▼
Standard skylights typically do not meet egress requirements because they are difficult to open and exit through, especially on steep roofs. Some manufacturers make egress-rated skylights that open fully and include built-in steps, but these are expensive and may still require exterior ladder access.
Where should I place the egress window in my attic bedroom?▼
Place egress windows where rescue access is feasible from outside - avoid locations over garage roofs with no ground access, steep slopes, or areas blocked by landscaping. Interior placement should allow easy access from anywhere in the bedroom and not be blocked by furniture.