Significant factors in the generation of waste in this Section include corrugated cardboard, packing materials, protection, and ordering or delivery errors.
Removed energy-inefficient window sash can be salvaged for use as interior borrowed lights, etc.
In this climate, reducing the energy use of a building is usually the single most important thing that can be done to reduce the building's overall environmental impact. Windows and doors compromise the thermal efficiency of a building's enclosure, and should be chosen with care. Placement and sizing of windows with regard to the sun and prevailing winds can have a large affect on energy use and heating bills. In general awning and casement windows have lower infiltration rates than double-hung. Also in general, lower quality windows make a poor investment.
Vinyl and vinyl-clad wood windows use a resin whose manufacture creates excessive and harmful pollution. Aluminum clad wood windows use a material with high energy costs.
The manufacture of wood windows and glazing is continuously improving in its resource efficiency and thermal performance. I f using insulating glass specify glazing with low-E films and argon or other inert gas between the panes , which is now common. Insulating glass will always fail at some point, requiring replacement and disposal, often of the whole window sash. Consider using single-pane windows with a removable energy panel; advantages are somewhat higher R-values, instant, weather-tight replaceability in the event of breakage, and no replacements from seal failures.
Industry standards require that the manufacturer furnish for independent testing only one unit of each type. This is clearly an inadequate sample to represent a standard result. Try to find out the basis of a company's published infiltration rates. Also take care not to underestimate heating requirements in sizing heating equipment.
Some things to consider in choosing a line of wood windows:
• What is the unit R-value (not center of glass R-value) and the infiltration rate.
• Is the frame made of solid wood, or does it have a substrate of lower value wood (finger-jointed, edge glued) with high-value veneer?
• Does the manufacturer offer a line of single pane windows with energy panels?
• When using insulating glass, does the design allow glass replacement only ,or must the whole sash be replaced and disposed of?
• Are the units or their components locally or regionally made, using regional materials?
SECTION 08600 — WOOD WINDOWS
PART 1 — GENERAL
1.01 DESCRIPTION
This section includes wood windows complete with hardware, glazing, weatherstripping, screens, jamb extensions, and standard anchorages, trim, attachments, and accessories.
See Drawings for location and the Window Schedule for window types, sizes, fittings, and special glazing requirements.
1.02 PERFORMANCE REQUIREMENTS
Air infiltration of window units is not to exceed 0.10 cfm per lineal ft. of perimeter crack tested at 1.56 psf in accordance with ASTM E283.
Window units are to withstand positive and negative windloads in accordance with applicable code, unless more stringent requirements are noted.
1.03 SUBMITTALS
Submit shop drawings and product data for each window type.
Indicate pertinent dimensioning, general construction, component connections and locations, anchorage methods and locations, hardware locations and installation details.
1.04 DELIVERY, STORAGE, AND HANDLING
Deliver in original packaging, store off the ground, and protect from weather and construction activities. Store units in an upright position in a clean and dry storage area. Prime or seal wood surfaces, including surfaces to be concealed by wall construction, if more than 30 days will expire between delivery and installation.
1.05 WARRANTY
Sealed insulating glass is to be warranted against failure of the air seal for a period of twenty (20) years from date of installation.
1.06 WASTE MANAGEMENT
Separate corrugated cardboard and place in designated areas for recycling. Place materials defined as hazardous or toxic waste in designated containers.
Use the least toxic sealants, adhesives, sealers, and finishes necessary to comply with the requirements of this section. Close and seal tightly all partly used sealant containers and store protected in well ventilated fire-safe area at moderate temperature. Place used sealant tubes and other containers in areas designated for hazardous materials.
PART 2 — PRODUCTS
2.01 MANUFACTURER
Windows and sizes shown on drawings are by [ ]. Provide scheduled units with roto-operator and screens at operable sash, drip cap, with primed exterior finish and unfinished interior finish, preglazed with 13/16" low-emissivity, argon filled insulating glazing, unless indicated otherwise. Provide factory installed jamb extensions for wall thicknesses indicated or required. Dashed lines on Drawings indicate operating sash.
Include or delete below.
Provide single glazing w/ removable double glazing panels with low-E coating.
If windows are to have insulating window treatment (window quilt, insulated shutters) specify T-shaped operator handles to avoid conflict.
PART 3 — EXECUTION
3.01 EXAMINATION
Before installation, verify that openings are plumb and square and of proper dimension. Report frame defects or unsuitable conditions to the General Contractor before proceeding. Beginning of installation means acceptance of existing conditions.
3.02 INSTALLATION
Anchor window units securely in place according to manufacturer's instructions and approved shop drawings. Use installation clips for prefinished units. Do not nail through factory finish.
Seal entire perimeter of each unit with a continuous bead of sealant. Place insulation in shim spaces around unit perimeter to maintain continuity of building thermal barrier. Do not use expansive foam insulators.
3.03 ADJUSTING AND CLEANING
Adjust operating sash and hardware to provide tight fit at contact points and at the weather stripping for smooth operation and closure. Lubricate hardware. Leave window units closed and locked.
Clean glass surfaces promptly after installation. Remove excess sealant materials. Clean surfaces in preparation for final finish application.
3.04 PROTECTION
Cover windows during spray painting or other construction operations that might cause damage.
END OF SECTION 08600
WOOD WINDOWS 08600-#
courtesy of Design Coalition, Architects. , Madison, Wisconsin, USA ~~ www.designcoalition.org