Dealing with rust in old metal window frames
Old steel windows often rust. If the putty has been dislodged or the glass cracked, first carefully chip out the putty with an old chisel or hacking knife and remove the glass. Whether or not the glass has to be removed, the renovation process is the same.
Rust in old frames
Tools: Paint scraper or small brush, for paint stripper; small cold chisel; hammer; wire brush; safety goggles; small paintbrush; gloves; face mask.
Materials: Rust remover; zinc-based primer; undercoat; enamel paint; mineral turps. Paint stripper and epoxy filler may also be required.
Tools: Paint scraper or small brush, for paint stripper; small cold chisel; hammer; wire brush; safety goggles; small paintbrush; gloves; face mask.
Materials: Rust remover; zinc-based primer; undercoat; enamel paint; mineral turps. Paint stripper and epoxy filler may also be required.
| STEP 1 Scrape off the paint, or remove it with a chemical paint stripper. Remember to wear a suitable face mask if the frame has been painted with a lead-based paint. |
![]() | STEP 2 Using a small cold chisel, chip off as many of the rust flakes as possible. Then wire-brush the frame by hand, or use a wire wheel or wire-cup brush in a power drill. Wear safety goggles, gloves and a face mask for this part of the job. |
| STEP 3 Brush over the frame to remove dust and loose particles, then fill any holes with epoxy-based filler and allow it to dry. |
| STEP 4 Paint the prepared frame with a coat of rust remover. |
| STEP 5 When the rust remover is dry, apply a zinc-based metal primer, then an undercoat and two top coats of enamel paint. |
| STEP 6 If necessary, re-glaze the window, using a suitable window putty. |
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