3.1201.1 Double-Hung Wood Windows

Topic: 
Windows and Doors
Subtopic: 
Maintenance, Repair, and Sealing
For supporting material, see Building America Solution Center.
Desired Outcome: 
Windows operable and weather tight; improved energy efficiency performance of fenestration
TitleSpecification(s)Objective(s)
3.1201.1a
Lead paint assessment

Presence of lead-based paint in pre-1978 homes will be assumed unless testing confirms otherwise

EPA EPA U.S. Environmental Protection Agency, www.epa.gov 's Renovation, Repair and Painting ( RRP RRP Renovation, repair, and painting ) Program Rule (40 CFR Part 745) in pre-1978 homes and proposed changes to this rule (Federal Register/Vol. 75, No. 87/May 6, 2010) will be complied with, to be superseded by any subsequent final rulemaking or any more stringent state or federal standards

Protect worker and occupant from potential lead hazards

3.1201.1b
Weather stripping

Existing weather stripping and sash sealant will be removed

Surface where the sill meets the sash will be cleaned

Seal between the fixed components of the window (e.g., jambs, sill) will be continuous and complete while maintaining the operability of the window

Continuous and complete weather stripping will be installed on the bottom of the lower sash where it makes contact with the sill and at the top of the upper sash where it makes contact with the upper part of the window frame

Form a complete seal from the outer edge of the sash to the jamb

Maintain operability of the window

3.1201.1c
Sash locks

Locks will be installed so that the rails of the upper and lower sashes are flush and in full contact

No gaps will be visible between the two sashes

Locks will be installed to achieve compression of the two sashes

Form a secure connection between the two sashes

3.1201.1d
Replacement sills

Beveled sill will be flush with interior wall and sloped to the exterior

Seams will be continuously and completely sealed with sealant to the jambs and to the frame

Sill will be water-sealed and primed

Form a complete seal from the bottom of the lower sash to the sill

Maintain operability of the window

Allow for drainage to the exterior

3.1201.1e
Sash replacement

Lower sash will have the same bevel on the bottom rail as the sill

Sash will be water-sealed and primed

Ensure sash remains in a fixed position when open or partially open

Maintain operability of the window 

Form a complete seal from the bottom of the lower sash to the sill

3.1201.1f
Adjust stops

Stops will be adjusted to eliminate visible gaps between the stops and the jamb while maintaining operability of the window

Form a complete seal between the jamb, sash, and stop

Maintain operability of the window

3.1201.1g
Replace stops

Stops will be installed to keep the window securely in place

Stops will be adjusted to eliminate visible gaps between the stops and the jamb while maintaining operability of the window

Form a complete seal between the jamb, sash, and stop

Maintain operability of the window