Who We Are

Since 1964, Longden has provided specialty contracting services to customers all over the country. In addition to being recognized as the largest access flooring dealer in New England, our skilled and experienced team designs and builds cleanrooms and server rooms for top companies in the laboratory, manufacturing and educational markets.

Years in Business
Projects Completed
Satisfaction Guaranteed



Case Studies



Longden constructs cleanrooms ranging from Class 1 (ISO 3) to Class 100,000 (ISO 8) and varying in size from mini-environments to world-class semiconductor mega-fab installations in all segments (biomedical, pharmaceutical, semiconductor, manufacturing) of the cleanroom market.

Case Studies - Access Flooring

Access Flooring

Longden Company provides high quality access flooring products and services to our customers throughout New England and around the country. We’re recognized as the largest Tate dealer in New England, with good reason. Our extensive product knowledge, seasoned installation experience, and fast, accurate, reliable and competitive bidding, allows us to exceed customer expectations every time.

Server Rooms

Server Rooms

Longden is an expert in the design and construction of server rooms and data centers. The size and the scope of our projects ranges from 200 sq. ft. rooms to 20,000 sq. ft. rooms. We take the time and resources necessary to ensure that the server room we design and build for your facility meets every requirement.