Examine temperature stripping and seals each year for dress in and lubricate hinges twice yearly to make certain smooth operation. Spend special consideration to drainage channels at the bottom of frames holding them clear of particles to forestall drinking water accumulation. Weatherproofing. More mature windows could possibly have hairline cracks https://woodyi543ilk3.angelinsblog.com/35988826/a-review-of-secondary-glazing-windows