Insulation Compliance in 2026: How to Prove Part L (and Avoid a Building Control Fail)
Part L compliance in 2026 is as much about evidence as it is about insulation thickness. This guide explains what Building Control and assessors are looking for, how the Home Energy Model (HEM) changes the workflow, and how to build a clean audit trail with photos, product data, and sign-offs - especially on real-world jobs like loft conversions and upgrades to older stock.