Detail Library – New Details February 2026
House Extensions BLOG

On the Detail Library, 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 unique challenges, particularly when upgrading existing structures to meet current Building Regulations Part B (Fire Safety) and Part E (Resistance to the passage of sound). This new set provides practical solutions for the most common upgrade scenarios you’ll encounter.

Details included in this set:

  • New Internal Timber Wall Partitions 30/60 Minute Fire Ratings
  • New Internal Metal Wall Partitions 30/60 Minute Fire Ratings
  • Existing Internal Timber Floor Upgrade 30/60 Minute Fire Ratings
  • Existing Internal Timber Floor Suspended Ceiling Upgrade 30/60 Minute Fire Ratings
  • Separating Wall Treatment 1 & 2
  • Separating Floor Treatment 1 & 2
  • Separating Floor Treatment 1 to High Window Head Detail
  • Separating Floor Treatment 1 to Separating Wall
  • Separating Floor Treatment 2 to Separating Wall
  • Separating Stair Treatment
  • Separating Floor Treatment 1 Service Penetration

We hope you find this latest set useful in your projects.

DL494 New internal timber wall partitions 30-60 minute fire ratings 2D
DL493 Fluid Glass X pivot doors plan jamb detail 2D
DL493 Fluid Glass X pivot doors plan jamb detail 2D
DL494 New internal timber wall partitions 30-60 minute fire ratings 3D
DL502 Separating floor treatment 2 to separating wall 2D
DL493 Fluid Glass X pivot doors plan jamb detail 3D

Latest Article

To tie in with this months new set of details, we are exploring the requirements of material change of use and the requirements of Approved Documents Part B and Part E. 
We share the theory behind our new set of details and show which details should be used and when.
Why We Model Buildings FI

If you are interested in joining our community, head over to the Detail Library to learn more about our platform and get yourself signed up.

The Detail Library provides hundreds of construction details for you to download and use adjust for your own projects. The details are available in 2D Revit, CAD dwg, and 3D SketchUp. You can start downloading straight away and build your own detail reference library. Not like other BIM libraries, the Detail Library contains fully resolved details rather than individual components.

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