Build Aviator

Registered Construction Details

We’ve joined forces with Local Authority Building Control (LABC) to revolutionise the Registered Construction Details (RCDs), aligning them with thousands of products to make procurement simpler.


What are RCDs?  

The Registered Construction Details were originally created by the LABC to assist with reducing incorrect thermal detailing in builds. The documents offered specifiers, designers and SAP assessors the ability to design out thermal bridging and create thermal modelling, and also guide builders on-site.

What’s so unique about our RCDs?

We’ve enhanced the original RCDs, by integrating a vast array of product lines into each, so you have plenty of options to choose between to assist you in achieving thermal compliance.

  • Each RCD contains calculated values, points to watch and a vast array of product options that allow you to achieve the necessary values
  • If you opt for a Build Aviator SAP assessment, the relevant RCDs for your build will be included as standard
  • Each RCD includes a check sheet to aid compliance
  • Evidence for Building Control and Clerk of Works during on-site inspection making sign-off simpler
  • Approved by the LABC

FAQs about Registered Construction Details

What are they?

The Registered Details are the first to offer specifiers, designers, SAP assessors, builders and building control a combination of specific detail, good practice and points to watch, together with BR497 modelled Psi-values (SAP software uses Psi (Ψ) values (W/mK) to calculate a Y value (W/m2K) for use in the SAP 2012 software calculator to account for the effect of none repeating thermal bridges at openings and junctions.

Why should I use them?

Registered Construction Details provide simple solutions for architects to design out thermal bridging and offer SAP assessors additional information to assist with the thermal modeling. Essentially, creating a quick and easy method of achieving thermal energy performance compliance within a build.

How to use them

The Registered Construction Details are built around the conventions of Table K in SAP 2012. They also correspond with the Modern Masonry Alliance Fire Detailing Guide to offer thermal and fire detail compliance.

The check sheet at the back of each detail is intended as an aide to compliance.  The designer should complete this for their chosen design and specify the preferred products.  The assessor can then validate thermal compliance through SAP software and provide the specified product list to the builder to ensure the correct installation. Building control and the clerk of the works can then check and sign off the detail on-site once installed and the assessor can provide an Energy Performance Certificate in confidence.

FSAP by Greenworks

Acoustic Testing

Air Tightness Testing

Quantity Take Off