The leading double glazing company in Swansea. Whether you own a large traditional detached property, cottage or a small terraced house. We are a FENSA registered window company in Swansea and have the double glazing windows to compliment any Swansea home. When it comes to new or replacement uPVC windows for your home, at MPN we pride our self as a window company you can trust. We are approved members of FENSA, Trustmark and the GGF and are one of Swansea’s leading double glazing companies having installed double glazing upvc windows to satisfied customers around the Swansea, Mumbles and West Wales area.