CastleForms announced a landmark milestone for its ICF Therm product range, including the groundbreaking ICF FireBlock, officially achieving Kiwa Certification – paving the way for expansion into the UK market.
An independent third-party accreditation, Kiwa Certification proves that the insulated concrete formwork products meet rigorous quality, performance and safety standards, providing assurance to designers, specifiers, housing and commercial developers.
In addition, the existing NSAI Certification for the ICF Therm system has also been extended to include ICF FireBlock, further validating its performance and compliance for the Irish market as part of the certified ICF Therm range
"Achieving Kiwa and NSAI Certification is a major objective for ICF FireBlock and a significant validation of the work our team has invested in developing a safer, more visible fire-stopping solution for the insulated concrete formwork industry," said Tom Maher, Director of CastleForms.
"From the outset, our objective was to create a system that not only improves fire safety performance but also makes compliance easier to demonstrate and verify on site.”
“The combination of independent certification, extensive fire testing and industry recognition gives our customers confidence that ICF FireBlock delivers exactly what modern construction demands – safety, simplicity and reliability."
This latest certification builds on the success of Raft Therm – CastleForms' insulated foundation and flooring system, which secured Kiwa Certification in February this year.
A New Award-Winning Standard in Fire Protection
The award-winning momentum continues. After winning the Irish Building and Design Award for Innovation in Construction Products, ICF FireBlock has now secured a place as a finalist in the 2026 Offsite Awards in the Product Innovation category.
Developed as part of the ICF Therm product range, ICF FireBlock has been specifically engineered to address one of the most significant challenges in modern insulated concrete formwork construction – delivering reliable, verifiable fire-stopping throughout a building's structure. The patent pending system incorporates high-density, non-combustible A1-rated mineral wool directly into standard ICF Therm blocks.
Key Benefits of the Certified ICF FireBlock System Include:
- Independent certification backed by extensive fire testing
- Enhances support for compliance with fire safety regulations
- Integrates high-density mineral wool fire-stopping within the ICF Therm wall system
- Fully visible and verifiable installation throughout the construction process
- Elimination of hidden or post-installed fire-stopping measures
- Reduces risk of defects associated with poor workmanship or restricted site access
- Multiple configurations for external walls, party walls and stairwell applications
- Designed for installation simplicity on site
About CastleForms
CastleForms is a specialist construction innovator and manufacturer dedicated to developing advanced building systems that improve safety, performance, compliance and efficiency across the construction industry. Through continuous innovation and practical engineering solutions, CastleForms supports the delivery of safer, higher-quality buildings throughout Ireland and beyond.