Specified single-pane wood window units to be made into double-pane units using patented Bi-Glass Process.

Installers shall be experienced and knowledgeable of all current methods and trade secrets of Bi-Glass conversion techniques.

All sash removed from inside of building by Bi-Glass personnel to insure proper numbering and ultimate return to proper openings. All original window stops numbered and reused unless otherwise specified.

Window conversion done on premises in self contained Bi-Glass trailer and/or off site in Bi-Glass shop as required due to window size and complexity, epoxy consolidation requirements, geographical locations and onsite parking availability.

When Bi-Glass work performed on site in mobile Bi-Glass trailer all window openings to be temporarily covered by Bi-Glass, as required, to prevent heat loss or damage from inclement weather. Sashes are replaced at the end of each day.

When Bi-Glass work is performed off site due to complexity, extensive epoxy consolidation, parking restrictions; or other non Bi-Glass activities such as paint removal, de-leading, priming or finish painting, window/door covers to be provided, installed and removed by GC or Bi-Glass as agreed.

Existing sash (and interior muntins) retained. Sashes and exterior muntins modified by cutting away existing putty or equivalent, increasing the width and depth of rabbet joint with patented Bi-Glass Router Guide Tool in strict adherence to Bi-Glass Specifications.

Existing wood sash shall meet Bi-Glass conversion standards as to; joints strong and complete, surface repairable with exterior rated epoxy. Sash or sash parts determined unusable at time of initial inspection or during conversion (rotted, decayed, and/or more than 15% moisture content as measured by Sonin Moisture Test Meter) will be Epoxy Consolidated using WEST System, or FLEX-TECH Elastomeric Wood Repair Compound. Incidental epoxy consolidation (up to 2 cubic inches) included in bid price.

Any replacement, repair or epoxy consolidation required beyond incidental on window parts integral to the Bi-Glass conversion (i.e .sashes, window stops, jamboards, weight pocket covers and blind stops) shall be performed at a unit cost.

The two bottom corners of the lower sash often require epoxy consolidation and Dutchmen due to deterioration over the years where the end grains on the stile tenons have acted as wicks and drawn water up the stiles where it stays and rots the wood. A Dutchmen 5/8" thick x +/- 1" wide x +/- 5" long (or the entire length, if required) is epoxy consolidated into each lower corner. This repairs the rot, stabilizes the sash corners and provides a solid base for the weather strip kerf.

Any window sills requiring epoxy consolidation or replacement shall be performed by Bi-Glass at a unit cost or by others prior to Bi-Glass work.

If necessary, any new replacement sash parts, or entire sash replacement duplicating the original sash as close as possible done by Bi-Glass at an agreed upon unit cost.

Any replacement, repair or epoxy consolidation required on other window parts not integral to the Bi-Glass conversion on interior or exterior window parts (such as window stool, interior casing trim, exterior window trim, brick moulding, etc.) shall be performed by Bi-Glass at a unit cost, or by others.

All Low-E double-pane insulated units @7/16" DSB with R value of 2.6 AN U value of .38 (R value 3.0 and U value .33 with argon).

Warm edge seal on all insulated glass units.

Glass is one piece double-pane unit. Selected interior metal spacer bars (dark in color) between the two pieces of glass to match selected interior and exterior muntin configuration may be required on large windows to prevent center of glass from touching temporarily during extreme weather changes and creating "Newton's Rings".

Tempered glass according to State code and as specified in bid.

Interior glazing using Norton Glazing Tape (black).

Exterior wood glazing stop installed in bed of siliconized acrylic sealant with supplemental nailing. (Glazing putty or compound eliminated).

Exterior muntins applied to exterior glass with Norton Exterior Rated Glazing Tape (black) to follow interior muntin configuration. Small expansion spaces are left at the muntin joints and then filled with a flexible caulk. This is necessary to insure full adhesion between the glass, glazing tape and muntins both at installation and then after installation to allow for muntin expansion and contraction during wet periods.

Exterior glazing stop and muntins fabricated from D-Select pine, or better, and primed with white Kilz primer.

Window sash structural repairs by Bi-Glass.

Window sash cosmetic repairs, priming and final painting done after Bi-Glass work by painter.

Any required interior or exterior lead paint removal, containment, and/or abatement by others and performed prior to Bi-Glass work. Any final lead paint clean up required for testing purposes to be performed by others. Bi-Glass uses HEPA approved vacuums in its daily clean up.

Any window sash preparation desired including stripping or scraping by painter or others or by Bi-Glass as arranged.

New parting beads supplied and installed by Bi-Glass for proper weather stripping contact surfaces. Will need painting after Bi-Glass install.

Stain can be touched up on sashes with stained interiors after routing and before glazing at an additional charge of $50 per window. New wood parts installed and visible from the interior (parting beads and sash stops) are stained with a similar matching stain.

All sash counterweights removed (if weights will fit thru weight pocket openings). Weight pockets insulated with fiberglass insulation to the extent possible and weight pocket covers replaced.

All systems allow for window weight removal and weight pocket insulation. Bi-Glass to recommend best balance system option considering owner preference and weight and size of sashes. New system to be balanced to double-pane glass weight.

• Lower sash operational and upper sash fixed (or both sashes can be made operational)
• Bottom sash to be weather stripped at parting bead "right angle" with jamboard using Schlegel Polyflex weather stripping
• Bottom operating sash weather stripped at bottom rail with silicone rubber Tube Seal.
• Meeting rail (check rail) weather stripped with silicone rubber tube seal on upper sash.
• Sashes to have wool pile installed at meeting rail ends to prevent air infiltration.
• Top fixed sash weather stripped or caulked air tight.
• Top fixed sash to be fixed shut with two custom sash support blocks.
• Window stop edges kerfed and wool pile installed for smooth operation and to prevent paint rubbing on wood.
• On fixed upper sash installations Bi-Glass of Connecticut to paint or stain upper and lower meeting rails which will be exposed (when windows are opened) with latex/water based paint or stain to blend with final window colors.

Lower sash operational and upper sash fixed. Note: this system used for double glazed sashes weighing over 50 pounds (approximately 12 sq ft or more) Weather stripped in same manner as Hidden Balance system.

Any windows to be fixed shut will be so indicated in bid and either caulked or weather stripped air tight.

All sashes planed, resized and refit to existing openings to provide for proper fit, locking and weather strip seal.

Existing window hardware used if proper weather strip seal can be achieved and consolidated if any is missing to provide consistent interior and exterior appearance. Existing hardware cleaned and polished if requested at a unit price. Broken, missing or new hardware replaced with Architect approved substitute at an additional charge.

Operating casement windows, French casement windows and French doors to be weather stripped with brush poly fin weather stripping installed in a kerf cut on top, bottom and side (including astragal).. Hinge side to be weather stripped with silicone rubber tube seal installed in a kerf.

On Doors, French doors and high wall windows it may advisable to install internal spacers in the IGU to prevent see thru when unit is opened and closed. This would be at an additional cost.

Exterior Doors. Epoxy consolidation repairs made as required and door refit. Door weather-stripped on lock side, hinge side and top with custom made wood stop with silicone rubber Tube Seal inserted in special kerf when tolerances allow. Or sides and top can be weather stripped with brush poly fin weather stripping installed in a special kerf. Door bottom to be weather-stripped with concealed custom brush sweep installed in special kerf. Existing hardware cleaned, lubricated and reinstalled. Broken or missing hardware replaced with Architect approved substitute at an additional charge.

All new window glass (inside and outside) cleaned, polished and temporary stickers removed at time of sash installation. Any protection required during completion of any other construction activities provided by G.C. Final cleaning to remove any construction dirt/filtrates etc. to be the responsibility of G.C.

On site parking for conversion work trailer and supply van required for duration of Bi-Glass work.

2-20 amp electricity outlets required within 75' of work trailer.

For occupied buildings a window work schedule should be made before the project starts that will maximize the safety of the occupants and minimize the disruption to their work schedule while, at the same time, allowing Bi-Glass to batch windows and perform its work efficiently without disruption and delays.

A designated area (for occupied buildings) provided on each floor of building for storage of Bi-Glass work tools and materials and for light woodworking.

For large projects an onsite dumpster to be provided for Bi-Glass.

All window treatments/accessories necessary to remove window sashes for Bi-Glass work such as curtains, drapes, interior shutters, air conditioners, fans, etc. shall be removed (and replaced) by owner/GC prior to arrival of Bi-Glass.

Any security or alarm contacts on windows to be removed and replaced by owner or Security Company. Bi-Glass accepts no responsibility for proper operation of the Security system after window conversion.

Clear and easy interior access to each window shall be provided by GC or other.

Storm windows will be removed free of charge if screens are purchased and installed. Any storm windows removed separately from screen installation will be completed at a unit cost of $35 per opening. (This covers cost of removal, transportation and recycling). This removal does not include removing any metal wrapping that may have been applied to sills or trim, scraping, filling of screw holes and any cosmetic wood repair by painter.

Any interior staging necessary for window conversion provided by Bi-Glass. Any exterior staging required provided by G.C./Owner.

All material and workmanship warrantees as per Bi-Glass Contract or as otherwise agreed. All warrantees are contingent upon payment in full, and payment in progress as agreed.

Payment Terms as agreed.

Totals subject to any change in opening counts or arithmetic errors.

Any bid security or bonding requirements to be covered by G.C./Others.

Current Certificate of Insurance showing existing coverage available.

Prices are subject to review of Job Specifications, General Conditions, drawings, final contracts and any other special requirements specified by Owner/Architect and/or General Contractor.