This month we're releasing a comprehensive set of furniture layout CAD blocks and space planning guides based on Building Regulations Approved Document Part M Volume 1. Designing compliant residential spaces requires careful coordination of room dimensions, furniture...
The latest news and updates from the Detail Library
Fire Safety Requirements for Dormers and Loft Conversions Near Boundaries
When planning a dormer or loft conversion, understanding the fire safety requirements becomes crucial, particularly when elements are located less than 1 metre from a boundary. This guide draws directly from Approved Document B (Part B1 for Dwellings and Part B2 for...
Spread of fire: Junction of party / compartment walls and roofs
When undertaking a loft conversion, roof extension, or any building works involving party walls, understanding fire-stopping requirements can feel overwhelming. However, getting these details right is crucial—not just for building regulations compliance, but for the...
Protected stairways and means of escape in dwellinghouses
Fire safety is a critical consideration in any residential building project, whether you're planning a new build, refurbishment, or loft conversion. Understanding when and how to implement protected stairways and proper escape routes can mean the difference between...
April 2026 – Protected Stairways, Separating Fire Junctions & Loft Upgrades
This month we're releasing a comprehensive set of protected staircase, loft conversion, and fire stopping details designed to support material change of use, loft conversions, and new-build residential projects. Fire safety and means of escape are fundamental...
Publicly Available Specifications (PAS) That Designers Should Know
The Detail Library family is a broad church of subscribers from across the construction industry. Everyone is welcome, and whether you are an Architect, Technologist, Technician, a student or running a small practice, you’ll be aware of the various standards that...
March 2026 – Twin Stud Passivhaus Details
This month we're excited to release a comprehensive Passivhaus twin stud timber frame detail set, designed to support Passivhaus projects and ultra-low energy buildings. Passivhaus represents the gold standard in energy-efficient construction, requiring exceptional...
Understanding Material Change of Use – BR Part B & Part E
Material change of use is treated differently across the Approved Documents, and it can trigger specific requirements when a building becomes a dwelling, contains flats, or changes the number of dwellings or rooms for residential purposes. This post focuses on...
February 2026 – Fire Rated and Separating Assemblies for Material Change of Use Details
This month we're introducing a comprehensive set of fire and acoustic details specifically designed for material change of use projects, where existing buildings are being converted into dwelling-houses and flats. Working on conversions and material alterations brings...
Why We Model Buildings
An architect friend contacted me recently. Could I help him with some energy modelling for his home before he starts a retrofit project? He wanted to understand the baseline performance and test what the potential improvements might be upon completion. This would give...
January 2026 – Fluid Glass Door Details
We are very happy to share another selection of details in collaboration with Fluid Glass. These details include various arrangements for bifold, sliding and pivot doors. All the details are in a masonry cavity wall construction and explore a number of options and...
Life Cycle Assessments
What They Are and How They Influence Better Design In the UK we have a commitment to achieve Net Zero carbon emissions, enshrined in law, by 2050. It will be achieved (he says, confidently) through a reduction in man-made emissions, combined with recapturing carbon...











