Build Envelope Ltd

Planning & Building Regulation Compliance Services
At Build Envelope, we offer a comprehensive suite of services to ensure your residential and commercial developments achieve compliance.

Air Tightness Testing | Sound Insulation Testing | Ventilation Flow Rate Testing | SAP Calculations | Overheating Assessments | Water Calculations | Energy Statements
We aim to be your trusted partner in navigating the complex requirements, in addition to being dedicated to helping you reduce costs.

Trusted Expertise In Meeting Compliance
With our in-depth knowledge of the latest regulations and best practices, we'll work closely with you to navigate the compliance process smoothly and ensure your building meets or exceeds all energy efficiency standards. Contact us today to learn more about how our energy consulting services can benefit your project

Design & Planning
Our experienced energy consultants are here to guide you through the complex world of building regulations and energy efficiency requirements. We offer a comprehensive suite of services to ensure your project meets all necessary compliance standard.

Air Tightness Testing
Air tightness testing, sometimes referred to as air leakage, air infiltration, or air permeability testing, measures the amount of air that leaks out of a structure per hour per square meter of its exterior (m3/hr.m2) in accordance with Part L of the structure Regulations.

Sound Insulation Testing
Accredited Sound Insulation and Acoustic Testing specialists helping you achieve compliance with Part E of the Building Regulations.

Overheating Assessments for Part O by Accredited Assessors
We are accredited Part O building assessors and can provide certified reports and the necessary guidance and documentation to meet building regulations.

U Value Calculations
To evaluate how well a building is insulated, U-value calculations look at the reciprocal of the combined thermal resistances of all the materials that form a specific building element.

A U-value represents the total thermal resistance of the various layers that form a building component, such as a roof, wall, or floor. It also takes into account any fixings or air gaps present.

What is a PSI Value calculation?
The PSI value calculation is a technique used to assess the heat loss or gain at junctions within a building. It relies on linear thermal transmittance, which quantifies the rate of heat transfer for each degree of temperature difference along a thermal bridge, measured in W/mK.

Achieve Compliance with Part G
Calculating water efficiency helps predict water usage according to Part G of The Building Regulations. These calculations are necessary for every new building and some renovation projects. As sustainability becomes a priority, the water efficiency of homes is gaining significance. Additionally, with the population on the rise, it’s crucial to focus on water conservation.

Overglazed Extension Calculations
Modern home extensions increasingly feature expansive glazing to maximize natural light and create seamless indoor-outdoor connections. However, Building Regulations Part L limits glazing to 25% of the extension’s floor area plus any existing openings removed during construction.

Smoke Shaft Testing
Smoke shaft testing verifies that a smoke ventilation shaft is correctly sealed, airtight, and functioning as a reliable part of a building’s life safety system. A smoke shaft might include tested and certified components, but the “as built” system must also be tested to prove that it performs correctly as a complete element of the smoke ventilation system.