Welcome to FSi

Welcome to FSi Limited, energetically and intelligently delivering a variety of fire stopping and environmental solutions to meet all current market needs. Our website is the portal to express a unified source across all of the company disciplines, communicating & capturing the range of activities offered by FSi Limited. Having a dynamic approach with extensive market knowledge and deep technical expertise helps make identifying solutions easier, in solving problems and recognising opportunities.

What is Built In Fire Protection?

Fire stopping is a method of compartmentalisation within a building that needs to be protected against the passage of fire and smoke, whilst still allowing for the penetration of services through fire rated walls and floors.

We call this BUILT IN Fire Stopping; Protecting your greatest asset - your people.

FSi Products incorporate Acoustic capabilities, Air and Water Permeability resistance.

Development Services

Did you know we now offer development services as well as our physical products?

Latest News

Keep up to date with industry news and our latest releases by following us socially.

Project List

We have completed hundreds of projects both domestically and internationally. You can find out more by clicking below.

Find Out More


FSi Limited
Westminster Industrial Estate, Tamworth Road, Measham, Leicestershire, DE12 7DS, UK
+44 (0) 1530 515130
+44 (0) 1530 273564
YouTube @Firestopit
Twitter @FSiLimited