Upgrade Weatherstripping on Windows
Upgrade weatherstripping on windows for more effective sealing at operable joints.
High-rise residential buildings.
- Improved window performance.
- Reduced energy costs.
- Improved occupant comfort, convenience and security.
- Reduced window condensation and damage to frames and finishes.
- Reduced noise levels from exterior.
- Elimination of sashes rattling during high winds.
- Window work can be more easily rationalized if comfort, security and watertightness aspects are emphasized.
- Ensure all window safety devices that limit the operating of the window by children are in place and reinstalled with the window sliders.
- Windows can often be brought up to current standards by upgrading the weatherstripping. This may be an attractive alternative to replacing the entire window system.
- The services of a qualified contractor and project consultant are recommended for this measure.
- Confirm that the corridor air ventilation and building exhaust systems are balanced and meeting air flow capacity specifications prior to implementation of this measure.
- Examine weatherstripping around windows or by noting areas where cold air infiltrates to detect unsealed cracks.
- Each sash will be removed to replace the pile gasket.
- Slides and collars should be inspected and replaced as required.
- Weatherstripping with an internal plastic fin for improved performance and durability should be selected.
- Perform other repairs to windows when replacing weatherstripping to ensure ease of operation, security and water seal.
- Worn or shrinking gaskets should also be replaced.
- Gaps between windows and surrounding drywall or sill should be sealed with caulking or 2-part urethane foam.
Cost of material only - $5 to $10 per window
Cost of material and labour - $25 to $30 per window
Typical average cost for re-weatherstripping a suite with 4 double slider windows - $125
Typical heating cost savings for sealing cracks - $1.60 per metre ($.49 per linear foot)
Simple payback – 3 to 5 years