Regularity
No, it's not just aesthetics (of course, it is also very important), but above all window care and extending their life. Neglected components start to wear out quickly, even if we think they do not require frequent maintenance. This is how it is with windows. If dirt stays on the glass and carpentry for many months, it will be destructive. Therefore, it is better to prevent additional costs of repair or - worse - replacement and focus on regularity. As for the inner part of the windows, it is best to clean every 4-5 weeks. For the outer part, it can be once for 3-4 months.