Vinyl window maintenance: seasonal checklist
Spring: post-winter preparation
Spring is the best time to inspect windows after the winter period. In Kyiv, where winters can be humid, cold, moisture, and temperature fluctuations may have left their mark on your windows.
Spring checklist:
✓ Seal inspection Check the rubber seals around the entire perimeter. They should not be cracked, deformed, or peeling. Pay special attention to the corners — seals wear out fastest there.
✓ Hardware check Open and close each sash several times. They should move smoothly, without crunching or sticking. If the sash has “sagged” or closes with effort — adjustment is needed.
✓ Frame and glass washing Winter dirt, salt solutions, and dust need thorough washing. Use a mild cleaning agent and microfiber cloth.
✓ Drip edge check Drip edges should be clean and undamaged. Blocked drip edges can lead to water leaking under the window.
Important: If you noticed condensation or drafts during winter, be sure to call a professional for a complete diagnosis. UWS professionals will inspect windows in Kyiv and determine the scope of necessary work.
Summer: maximum efficiency
Summer is when windows work at full capacity. Ventilation becomes frequent, and the load on hardware increases.
Summer checklist:
✓ Micro-ventilation mode In summer, micro-ventilation is especially relevant. Use it for constant air exchange without drafts. Don’t forget to close mosquito nets — they protect against insects.
✓ Hardware lubrication Frequent opening and closing of sashes in summer leads to mechanism wear. Lubricate moving parts with specialized lubricant or use a graphite pencil.
✓ Mosquito net washing Nets accumulate dust and pollen. Rinse them with water and a mild cleaning agent, then let them dry in the sun.
✓ Drip edge check Summer rains can clog drip edges. Make sure water flows freely and doesn’t leak under the window.
Tip: In summer, don’t leave sashes in micro-ventilation mode overnight — outdoor temperatures can drop, and the room will become cold.
Autumn: preparing for winter
Autumn is the most important season for window maintenance. Now is the time to prepare them for the cold.
Autumn checklist:
✓ Complete hardware adjustment Switch sashes to “winter” mode — increase clamping. This ensures tight fit and prevents drafts.
✓ Seal replacement (if needed) If seals are cracked or deformed — replace them before the cold weather arrives. Winter seal replacement is less effective due to low temperatures.
✓ Ventilation check Make sure ventilation ducts are clean and functioning. Blocked ducts lead to poor air exchange in winter.
✓ Window reveal insulation Check the condition of the reveals. If they’re not insulated — now is the time to do it. Cold through the reveals can significantly increase heat loss.
✓ Washing and polishing Do a final wash before winter. Clean windows let in more light, which is important during short winter days.
Important: Don’t delay autumn maintenance until the last moment. When temperatures drop below +5°C, some work becomes less effective or impossible.
Winter: minimal care and monitoring
In winter, windows need minimal but regular care. The main task is to monitor condition and prevent problems.
Winter checklist:
✓ Condensation monitoring If condensation appears — increase ventilation or install a dehumidifier. Persistent condensation leads to mold growth.
✓ Seal tightness check Periodically do a “draft test” — hold a lit candle or match near the sash. If the flame flickers — there are gaps that need adjustment.
✓ Snow and ice clearing Don’t allow snow to accumulate on drip edges. Melting snow can leak under the window and freeze, damaging the seals.
✓ Minimal ventilation Even in the coldest weather, air for at least 5 minutes a day. This is necessary to maintain normal humidity levels and fresh air.
Tip: If windows freeze severely in winter — this is a serious reason to call a professional. Don’t wait for spring, as the problem may worsen.
UWS performs seasonal window maintenance and hardware adjustment in Kyiv. Regular professional care extends the life of your windows and prevents costly repairs.
