McNamee Window Systems Ltd

McNamee Window Systems is a family‑run business based in Castlefinn, Co. Donegal, with more than 15 years of experience delivering high‑quality windows, doors and shopfront solutions for both residential and commercial projects. Since a major expansion in 2020, the company has operated a purpose‑built workshop where it manufactures its own aluminium products, allowing it to offer fully bespoke, premium‑grade aluminium systems alongside a comprehensive range of uPVC, composite and AluClad options.

The product portfolio includes aluminium, uPVC and AluClad windows, designer aluminium doors, composite doors, sliding and lift‑and‑slide systems, as well as curtain walling, skylights and rooflights. McNamee also provides specialised aluminium manufacturing for trade and commercial clients, including automatic swing and sliding doors and shopfronts. With over 500 projects completed and A‑rated Passive House credentials, the firm combines competitive, transparent pricing with guaranteed quality and excellent workmanship, making it a trusted partner for homeowners, developers and architects seeking energy‑efficient, tailor‑made glazing solutions.