| Hazy film on the glass | Salt from sea air and spray. | Regular cleaning with clean water and a fresh microfibre cloth. The film builds up if left for months. |
| White, chalky spots | Limescale from hard water drying on the glass. | A limescale remover that is safe for glass, tested on a small area first. Keep acids away from aluminium frames, stone sills and seals. |
| Muddy streaks after rain | Weeks of dust turned to mud by a short shower. | Wait for a dry spell, dust the glass first, then wash and squeegee in the shade. |
| Paint and cement splashes | Building and renovation work. | Soften and lift with care. Never scrape dry glass, because it can scratch. Ask us if there is a lot of it. |
| Sticker and tape residue | Old stickers, protective film and tape. | Warm soapy water and a plastic scraper. Tougher residue is a job for us. |
| Dirty tracks and seals | Dust and damp collecting in humid weather. | Vacuum, wipe and dry the tracks regularly, and ask for tracks and frames to be included in your quote. |