Following the Secretary of the Interior's "Standards for Rehabilitation", Leeds Clark has developed a turn-key historic steel & hollow metal window restoration service based on tested and proven methodologies and restoration products. With over 30 years experience, Leeds Clark is confident that no other firm will rate as high in timely completion and within budget, while providing the craftmanship and expertise expected in historic stee & l hollow metal window restoration. Below is the prefered methodology Leeds Clark incorporates into historic steel & hollow metal window restoration projects:

Restore historic steel / hollow metal window sashes and frames in place, unless sashes or frames are to recieve new components pieces. Remove existing finish coatings, glazing, and exterior sealants to bare metal using neutral PH based chemical paint stripper.
As of April 22, 2010, a new law governing renovations that contain lead paint became effective. Aimed at protecting against lead-based paint hazards, the EPA’s new rule applies anytime a lead paint surface is disturbed by renovation or painting projects, including repairs, maintenance, electrical, plumbing, carpentry, demolition, and window restoration / replacement. The rule also requires renovation firms to be certified by the EPA, and that they assign at least one EPA Certified Renovator to the job to ensure that lead-safe work practice standards are observed. Leeds Clark Inc. is an "EPA Certified Firm", and both Tom & Chris Clark are "EPA Certified Renovators". Go to for additional information about the new EPA rule and other Lead Programs. Leeds Clark is not a licensed or insured asbestos abatement contractor.




Remove rust and unsound metal back to sound material.

Repair moderately damaged and deteriorated components by welding or brazing new pieces to existing window sash / frame.

Grind exposed welds smooth, inspect welded connections and fasteners, and replace damaged / stripped fasteners.

Repair minor damage and deterioration with epoxy / patching compound to fill voids, pitting, and other imperfections.

Sand / Prep window sash and frame to smooth, flat apperance.

Restore / Reuse existing window hardware and provide new hardware to match where existing is damaged of missing.

Lubricate all operable window parts and adjust for smooth operation. Tack weld in a closed position all fixed windows.









Remove all scratched, broken, or missing glass and install new glass to match existing. * Incorporate IG, Low-e, etc...

Reglave all window units with specified glazing compounds.

Apply exterior sealants to seal openings and gaps between window frames and surrounding masonry.

Allow adequate time for the curing of all glazing compounds and exteriors sealants prior to the application of finish paint.

Apply two coats of direct to metal paint on all interior/ exterior surfaces of the sash, frame, trim and glazing compounds.

Incorporate weatherstripping into window unit if specified.

Clean window glass and complete any punch items submitted.










No two steel / hollow metal window restoration projects are the same. Tom Clark believes inspection of the historic windows and its components is vital in developing an historic window restoration plan. Condition assessment of the historic windows helps the architect/owner establish needs, offer realistic solutions and specifications, then develop a plan and budget to determine feasibility of the proposed project.

For inquiries on Leeds Clark's steel / hollow metal window restoration services, email: