May 2024 – New Details

Something a little different for you this month. We’ve been talking for some time about creating a template for our members that includes the different construction build ups that are featured in the library. Finally, it is a reality!

Our Construction Build Ups Template provides a large range of different construction assemblies and build ups that can be adjusted to suit all sorts of different domestic and residential projects.

The external envelope build ups are intended to meet the following Notional Dwelling Specification U-Values from Approved Document Part L of the English Building Regulations:


  • Ground Floors: 0.13 W/m2K
  • External Walls: 0.18 W/m2K
  • Roofs: 0.11 W/m2K

This Construction Build Ups Template should be used as a starting point to develop robust project specific build ups in collaboration with the design team, contractor, subcontractors and manufacturers. Project specific U-value calculations and condensation risk calculations should always be obtained during the design process.

There are over 100 different build ups within the template including:

  • Masonry external walls
  • Timber frame external walls
  • SIPS and CLT external walls
  • Steel frame external walls
  • Passivhaus external walls
  • Ground floors
  • Intermediate floors
  • Flat roofs
  • Pitched roofs
  • Ceilings
  • Internal walls

The Template is FREE to download for all members, Pro, Lite or Monthly. 

To further assist with the creation of project specific details, you can find a vast selection of junction details available to download on the library.

Stay tuned to the website as we continue to develop new details every month.


What’s in the construction build ups template?