Lynchburg Stained Glass

RESTORATION AND PROTECTION OF LEADED STAINED GLASS WINDOW ASSEMBLIES

This document is provided by Lynchburg Stained Glass Co. (P. O. Box 4453, Lynchburg, Virginia, 1-800-237-6161) as a guide to the specification of repairing, restoring and protecting leaded stained glass windows. This document, in its entirety, may be distributed freely between architectural professionals and should be edited to suit the specific conditions of the project at hand. Copyright 2002 by Lynchburg Stained Glass Co. Last revised April 2002.

PART 1 GENERAL

1.01 SUMMARY

A. Section includes:

1. Repair and reconditioning of leaded stained glass window.

2. Repair and reconditioning of existing wood frames.

3. Aluminum window frames.

4. Protective exterior glazing.

1.02 QUALIFICATIONS

A. The stained glass studio shall be bondable.

B. The stained glass studio shall be a current member of the Stained Glass Association

Of America with recognition as a Full Service Studio member for a minimum of 10 years.

1.03 SUBMITTALS

A. Shop Drawings and Samples: Submit the following under provisions of Section

[Specify] – Submittals:

1. Detail Drawings: Submit detail drawings indicating frame layout and frame component cross-sections, special mullion details.

2. Material Samples:

a. Frame Assembly: Submit frame corner section with protective

covering sample installed using proposed installation methods.

3. Documentation:

a. Submit installation procedures including frame anchorage, weather-

proofing, and venting details.

b. Submit 10-year written warrantee against manufactured defects and

Leakage.

c. Submit manufacturer’s literature for protective laminated glass.

1.04 QUALITY ASSURANCE

Lynchburg Stained Glass has 19 years experience in providing quality stained glass and restoration services. Our founding owner, Robert Speake, has 35 years of experience in the production, restoration and protection of stained glass windows. The following paragraph may be omitted if Lynchburg Stained Glass is sole sourced.

A. Studio Qualifications: Company having at least 15 years experience in the

restoration and protective covering of leaded stained glass windows. Provide a reference list of at least five restoration projects of similar scale and complexity successfully completed within the last seven years. Provide project names, locations,

completion dates, names and telephone numbers of General Contractor’s or Owner’s contact person.

PART 2 RESTORATION PROCEDURES FOR LEADED GLASS

2.01 CLEANING THE INTERIOR OF LEADED STAINED GLASS WINDOWS

A. The interior surfaces of the stained glass windows shall be cleaned by spraying an approved liquid cleaning solution on the stained glass window and then wiping the solution off with a soft cloth.

2.02 BROKEN STAINED GLASS REPLACEMENT

A. The best possible match for broken stained glass must be utilized. (Occasionally exact matches may be impossible due to age, weathering and lost propertary glass formulas.)

B. Broken painted stained glass pieces are to be replaced utilizing artists experienced in duplicating original pieces of painted stained glass, the goal being to achieve the best match possible.

2.03 RECEMENTING

A. The exterior surfaces of the stained glass windows will have a specially formulated cement compound brushed underneath the lead flanges. This process should strengthen and waterproof the window by replacing the original cement compound, which has loosened or fallen out over the years. This process also serves to clean the exterior of the windows.

2.04 REPAIR OF LOOSE BRACE BARS

A. Loose brace bars are to be resecured by either resoldering the broken joint or installing a new wire tie. Braces that are bent or damaged will be replaced with a new steel brace.

2.05 REGLAZING T-BARS

Remove any loose putty on the stained glass divider bars and reputty each bar. After

the new putty is complete, each bar is to be painted, preserving the t-bar and preventing rust.

2.06 ADJUST EXISTING VENTILATORS

A. Existing ventilators are to be adjusted in order to operate more freely. Improve ventilator operation by mechanically adjusting, light grinding or lubricating. Completely fluid operation may be impossible due to excessive deterioration or warpage of some of the ventilators.

PART 3 PREPARATION FOR EXTERIOR RESTORATION AND PROTECTIVE

COVERING

3.01 SCAFFOLDING

A. Access to elevated windows shall be by OSHA approved scaffold or mechanical man lift, and shall be the responsibility of the restoration contractor. Man lifts shall be used to areas not accessible by scaffolding, such as windows only reachable on the exterior from the roof. Scaffolding shall not sit on the roof tiles.

3.02 OLD STORM COVERING REMOVAL

A. All of the old exterior window coverings and aluminum frame materials shall be

removed and disposed of by the restoration contractor.

PART 4 RESTORATION OF EXISTING WOOD FRAMES

4.01 EXTERIOR WOOD FRAME PAINTING

Scrape all loose or flaking paint, reputty any needed areas, apply one coat of top

quality primer. When surface is properly prepared, apply two finished coats of paint. (Owner to have choice of paint type and color).

Wood that is discovered to be severely deteriorated will be brought to the attention of

the owner, and repaired on a time and material basis, with the owner approving all work before it begins.

PART 5 PERIMETER FRAMING

5.01 MATERIALS

A. Single glaze frame material shall be type 6163-T5 extruded aluminum. Frame color

Be [PPG Duracron S600 Medium Bronze] [PPG Polycron III White] [custom color as selected by the project architect]. Extrusion supplier shall shop paint extrusions in accordance with paint manufacturer recommendations.

5.02 FABRICATION

A. Aluminum frames shall be fabricated to the dimensions indicated. Corners shall be

mitered and welded. All horizontal and vertical divisions are to be welded in place for maximum support of each individual section of protective glass. Welds shall not be visible once the window is installed. Glazing stops shall be snap-on type aluminum. Exterior edge of frame shall be grooved to accept caulk bead against building jam.

B. System is to be vented so there will be no heat build-up.

C. Mullions are to follow the original mullions of the wood frames, as closely as possible.

D. All existing window ventilators are to be fitted with aluminum frames as separate units to allow the vents to operate freely.

5.03 INSTALLATION

A. Set frame units within openings, stone to stone, completely covering the newly painted wood frames. Screw fasten frame to stone opening with fasteners appropriate for anchor material.

B. Seal perimeter of frame to stone with polyurethane sealant, color to match frame.

C. Field applied aluminum frame touchup paint shall be of the same color and manufacturer as the shop applied paint.

PART 6 PROTECTIVE EXTERIOR GLAZING

6.01 MATERIALS

A. ¼” Clear annealed laminated glass shall be used for exterior protective glazing

6.02 INSTALLATION

A. Install laminated glass into aluminum frame utilizing architectural glazing tape and

neoprene setting blocks.

B. Seal perimeter of each laminated glass panel to aluminum frame with urethane

sealant, color to match frame.

END OF SECTION