Air Sealing



Castle Hill can install solutions to meet with your air sealing requirements as part of a fire protection package. Apertures and linear gaps penetrating external walls and floors can be sealed by using fire stopping products to prevent the passage of air.

Products installed are from market leaders such as FSI, Nullifire, Promat, PFC Corofil, British Gypsum, Rockwool, Fireus, and Sandisfire.

In the case of intumescent paint work, we use Jotun, Nullifire, Sherwin Williams and International Paints with their specifically designed intumescent loading tables to ensure that we achieve your fire rating requirements.

We work closely with the manufacturers, clients and accreditors to ensure that we offer the most appropriate and cost effective solutions for every project.

Please contact us with any queries.

Client Feedback

"Castle Hill have been so helpful to help fulfil the client's needs. They have been so polite, no problem is a burden, stayed professional and Hillcrest have had no complaints or issues from any other trades or Balfour Beatty."

Jake Green, Hillcrest Structural

"We would like to take this opportunity to thank you for the excellent work carried out at our recent Newmarket contract. Despite the short lead-in time, Castle Hill managed to mobilise an extremely proactive installation gang, whose workmanship has been noted and praised by our client. We look forward to working with you again soon."

"Castle Hill are carrying out all fire protection services at Islington Square a large mixed use development project and a challenging scheme requiring many different forms of fire stopping. Castle Hill are a pleasure to work with and I have never experienced any faults in their services or difficulties in dealing with them day to day. They are quick to respond to any new requests, informative and very knowledgeable on all aspects of fire stopping. From working with them for nearly two years now I have seen that Castle Hill always strive to deliver an exceptionally well finished product and that the company is founded on good morals, and a strong working ethics. I highly recommend their services."

"We appreciate that the site is not the easiest most straight forward job but Castle Hill site and Office teams have carried out your work like there's no problems. So thank you for your co-operation, time and effort and may we continue having a close working relationship."

Jake Green, Hillcrest Structural