We sat down with Jeremy from TCA Group to discuss the challenges of maintaining critical roof cavity ventilation in renovation projects, and how Masons Insul-Baffle helped ensure a consistent 25mm ventilation gap in tight roof spaces.
How Insul-Baffle Helps Maintain Roof Cavity Ventilation
Case Study
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January 1st, 2026
TCA Group on Using Masons Insul-Baffle
When it comes to renovation projects, improving thermal performance can be challenging, especially around roof edges where space becomes tight. In this testimonial, Jeremy from TCA Group shares how the Masons Insul-Baffle helped maintain critical roof cavity ventilation to allow insulation to perform at its best.
Masons Insul-Baffle is designed to create and maintain a consistent 25mm ventilation gap between insulation and the roof underlay or cladding. This airflow is essential for helping manage moisture and condensation risk in roof cavities, while still allowing builders to maximise insulation coverage and thermal performance right to the roof perimeter.
On this major renovation project, TCA Group used Insul-Baffle to solve a common challenge in retrofit construction: increasing insulation levels without compromising ventilation. Jeremy also highlights how the product’s clear, visible design made installation straightforward for both builders and roofers, providing confidence that the correct airflow path was maintained throughout the build.
Trusted across renovation and new-build projects alike, Insul-Baffle offers a practical, cost-effective solution for achieving compliant ventilation in difficult-to-access roof and ceiling spaces.
PROJECT CREDITS
Product: Masons Insul-Baffle
Architect: TCA Group
Writer: Masons
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