The Mt. Zion Presbyterian Church in Troy Missouri.
These windows were installed in their new building in 1964. The church windows had rock damage to several of it's windows from the gravel driveway on the west side of the church. Our original plan was to simply remove the damaged glass and replace it with new glass, reputty the came and reseat the window.
It became apparent upon closer inspection that the came had begun to oxidize, the framing was not adequately protected from the elements on the outside and the inside framing had extensive water damage from condensation on the inside, and the wood trim on the outside of the window had begun to rot. At some point a maintenane worker had used silicone putty to try to keep water out of the lower frame. Each window was removed from the frame, deconstructed, the glass cleaned, reconstructed square using new came, glaziers putty and zinc framing to support the outer edge of the window and keep it in square. The frames were stripped to the bare wood, hand sanded to good wood, then mulitple coats of Kilz premium primer and Dutch Boy extreme adhesion exterior latex were applied to the outside frame to protect it from the elements. The inside face of the frame was finished with multiple coats of Helmsman indoor/outdoor spar urethane to protect against condensation damage. The inside face was sealed using a crystal clear elastomeric latex window putty, the exterior was sealed around the frame with the same 50 year elastomeric paintable latex window putty. The window shown below was repaired as above with one important difference: I used No Days Glaze instead of the glaziers putty to seal the came. The No Days Glaze is not toxic, it is clean and economical and provides a solid airtight seal. It sets immediately so there is no setteling and no need to allow the putty to cure for days before reinstallation.
