Knowledge Centre
Practical advice for owners of VELFAC windows and doors, covering maintenance, common faults, replacement parts and product identification.
Maintenance & Care
Cleaning, lubrication and routine checks to help prolong service life.
Read maintenance guideRepairs & Troubleshooting
Simple checks for windows that are stiff, difficult to close or will not lock.
Window won’t lock?Parts & Identification
Identify handles, keys, vents and other replacement components.
Identify your handleProduct ID Tags
Find the order and position details used to identify your VELFAC window or door.
Find your ID tagNeed a replacement part?
Browse our available VELFAC handles, keys and click vents.
View handles View keys View ventsIndependent guidance: NW ReFit is an independent specialist parts supplier and is not the manufacturer. VELFAC is a trademark of DOVISTA UK Ltd. For safety-critical work, glazing replacement or complex adjustments, use a competent professional.