Guidance on RAAC in Listed Buildings
Purcell have launched the publication Guidance on RAAC (Reinforced Autoclaved Aerated Concrete) in Listed Buildings.
The document, which has been endorsed by the Twentieth Century Society, Society for the Protection of Ancient Buildings (SPAB), and the Institute of Historic Building Conservation (IHBC), has been led by Max Thomson, Building Surveyor at Purcell in collaboration with Chris Waterman, Parliamentary Policy Advisor and Building Safety Specialist.
The research and publication of the guide has been funded as part of Purcell's R&D programme in the interests of disseminating what they consider to be the best currently available guidance for anyone who is responsible for a listed building that may be affected by the presence of RAAC. The potential presence of RAAC is by no means limited to 20th century buildings, but buildings of any period that may have undergone alterations or interventions from the 1950s to 2000.
Following guidance documents published by the Government Department for Education (DfE) and the Institute of Structural Engineers (IStructE), Purcell wanted to initiate guidance that specifically focused on RAAC in listed buildings. The document sets out professional guidance for building owners, heritage stakeholders, asset and estate managers, and local and central government.
The full document is available as a free download here
[edit] Related articles on Designing Buildings
- Aerated concrete.
- Admixtures in concrete.
- Aircrete.
- Aircrete blocks.
- Alkali-activated binder.
- Alkali-aggregate reaction (AAR).
- Alkali-silica reaction (ASR).
- Applications, performance characteristics and environmental benefits of alkali-activated binder concretes.
- Autoclaved aerated concrete.
- Blockwork.
- Cellular concrete.
- CIAT statement on Reinforced Autoclaved Aerated Concrete.
- CIOB statement on Reinforced Autoclaved Aerated Concrete.
- Concrete masonry unit CMU.
- Concrete superplasticizer.
- Construction industry statements and responses to RAAC crisis.
- Crumbling concrete.
- Defective Concrete Blocks Grant Scheme.
- Deleterious materials in construction.
- Fly ash.
- Formwork.
- Precast concrete.
- RAAC causes temporary closure of St Davids Hall.
- Reinforced autoclaved aerated concrete RAAC.
- Self-compacting concrete.
- Smart concrete.
- Spending on Infrastructure fell back 39% in August, whilst education sees a boost following RAAC.
- Types of concrete.
- Types of concrete specification
Featured articles and news
C20 Society; Buildings at Risk List 2025
10 more buildings published with updates on the past decade of buildings featured.
Boiler Upgrade Scheme and certifications consultation
Summary of government consultation, closing 11 June 2025.
Deputy editor of AT, Tim Fraser, discusses the newly formed society with its current chair, Chris Halligan MCIAT.
Barratt Lo-E passivhaus standard homes planned enmasse
With an initial 728 Lo-E homes across two sites and many more planned for the future.
Government urged to uphold Warm Homes commitment
ECA and industry bodies write to Government concerning its 13.2 billion Warm Homes manifesto commitment.
From project managers to rising stars, sustainability pioneers and more.
Places of Worship in Britain and Ireland, 1929-1990. Book review.
The emancipation of women in art.
Call for independent National Grenfell oversight mechanism
MHCLG share findings of Building Safety Inquiry in letter to Secretary of State and Minister for Building Safety.
The Architectural Technology Awards
AT Awards now open for this the sixth decade of CIAT.
50th Golden anniversary ECA Edmundson awards
Deadline for submissions Friday 30 May 2025.
The benefits of precast, off-site foundation systems
Top ten benefits of this notable innovation.
Encouraging individuals to take action saving water at home, work, and in their communities.
Takes a community to support mental health and wellbeing
The why of becoming a Mental Health Instructor explained.
Mental health awareness week 13-18 May
The theme is communities, they can provide a sense of belonging, safety, support in hard times, and a sense purpose.
Mental health support on the rise but workers still struggling
CIOB Understanding Mental Health in the Built Environment 2025 shows.
Design and construction material libraries
Material, sample, product or detail libraries a key component of any architectural design practice.