On the Detail Library, following some recent member requests, we are expanding our collection of pitched roof and eaves junctions with a particular focus on warm roofs and ceiling-level insulation. This new set of details supports a range of common and advanced...

Flat Roof Parapet Detail: Copings, Cavity Trays & Waterproofing Flat roofs are often seen as simple, but the way they meet the parapet is one of the most important junctions to get right. At this point, waterproofing, insulation, drainage, airtightness, and fire...

Introduction Airtightness is a key factor in determining the performance of a building. It refers to how well a building is designed to prevent uncontrolled air movement through its external envelope. When a building is not airtight, cold air can infiltrate, and warm...

Eaves Detail Explained: Membranes, Ventilation & Cavity Closers Understanding how the roof meets the wall is a key part of getting moisture control and insulation right. The eaves detail often combines multiple layers — ventilation gaps, membranes, insulation, and...

On the Detail Library, this month we’re expanding our collection of masonry wall extension details with a comprehensive new set that explores full fill cavity wall construction in combination with a range of floor types and finishes. The series includes 14 new details...

Cavity Wall Foundation Detail Explained: Wall Ties, DPC vs DPM, Insulation Upstand Understanding how a wall meets the ground is one of the most important aspects of construction detailing. The junction between the masonry cavity wall and ground-bearing slab brings...

Introduction Sound can have a significant impact on our physical and mental wellbeing. It can produce both positive and negative effects. This has been corroborated by several sound focused studies. One example of the positive being the 2021 Frontiers in Psychology...

On the Detail Library, this month we’ve added a new series of details focused on timber frame house extensions, offering practical solutions for a variety of boundary, floor, and wall junction conditions. These details have been developed to address common scenarios...

Introduction to Designing Accessible Ramps in Line with Part M Ramps play a vital role in creating inclusive and accessible environments. They provide step-free access for wheelchair users, people with limited mobility, those pushing prams, and many others who may...

On the Detail Library, this month we’re expanding our CLT collection! CLT is growing in popularity, and we can see why. Just google CLT house and you’ll be presented with beautiful examples of this solid sustainable material. Due to the popularity of our existing CLT...

On the Detail Library, we’re pleased to share Part 2 of our comprehensive set of construction details showcasing Porotherm clay block systems. Porotherm is a precision-engineered clay block walling system that delivers fast construction, high thermal performance, and...

On the Detail Library, we’re excited to announce a fresh set of technical details focused on skylights and flat roof assemblies in house extensions — designed to help you integrate daylight, performance, and aesthetic flexibility into your projects. This month’s...

On the Detail Library, this month we’re pleased to share a comprehensive new set of construction details showcasing best-practice design and build-ups for Porotherm clay block systems. Porotherm is a precision-engineered clay block walling system that delivers fast...

Introduction Sunlight is one of the main natural elements to consider when designing a building. It directly affects user comfort, energy performance, and the overall quality of a space. Thus, understanding how the Sun moves across the sky throughout the day and year...