Metal Windows For 60 years Metal Windows has built up a reliable reputation for installing and refurbishing perfect fit, leak-free windows and doors. We pride ourselves on custom solutions - solving problems which may be structural or caused by rain, sea air, damp or previously incorrect installations.Our Aluminium windows and doors are all custom designed and made to specific MW standards. We incorporate our unique BarsDamp® damp-proofing solutions into each and every installation.We have a 5 year warranty unique to the window industry. In consultation with you, we will design long-lasting, practical solutions to your specific window and door requirements. Once installed no upgrades required!