Alexander Windows is a family-run business that was founded in 1991. Since then, we have been in continuous business providing high-quality uPVC windows and doors to over 70,000 customers. Our business is founded on trust, excellence and personal recommendation. We love doing what we do and pride ourselves on exceptional customer service from beginning to end. Have a look through our website: we think you’ll understand what makes us different. From manufacturing our own frames, all the way through to employing our own time-served joiners, salaried sales people (no commission) and our Unique Lifetime Warranty, choosing us to replace your frames will be as hassle-free as we can make it.