Exterior Plas specializes in manufacturing and installing affordable, high quality, energy efficient, secure windows and doors for Commercial, Educational, and Residential properties across London and the South East. Established for over 30 years, Exterior Plas is a family-run company with upwards of 70 employees. Historically our expertise has been with local councils, housing associations, and the educational sector, however, we also carry out domestic works and deal with the trade market.