What is an Overheating Assessment

An Overheating Assessment is a requirement of Part O of the building Regulations.

There are two methodologies to conduct an overheating assessment;

The simplified method assessment is a limited assessment which can generally only be used for simple house types. In this assessment method, we consider for example the location and orientation of the dwelling, its dimensions, cross-ventilation potential, size of the glazed areas and their openings etc. It must be noted that the simplified method is limited in the factors it can consider.

Dynamic Thermal modelling allows more scope and possibilities to achieve a passed overheating assessment, by considering other factors such as the g-value of the windows, U-value of the external envelope, M & E specifications, yearlong simulations of weather data for the proposed dwelling. A 3D model of the building is required as the starting point for the assessment.

Quotations

Please provide your proposed drawings for your new dwelling by email to info@ukoverheating.co.uk We will provide a quotation by return. Alternatively please call 0333 303 4762 to speak to a consultant.

Overheating in buildings has been highlighted as a key risk for the health and productivity of people and businesses in the UK

It is estimated that there are about 2,000 heat-related deaths each year in England and Wales.

This has led to new regulations to ensure occupants in new residential buildings do not suffer excessive temperatures.

Approved Document O England

Approved Document O (2021 edition – England) was released in December 2021 and came into force for all Building Regulations building notices, full plans applications and initial notices for residential buildings submitted in England from 15 June 2022.

Approved Document O Wales

Approved Document O (2022 edition – Wales) was released in May 2022 and came into force for all Building Regulations building notices, full plans applications and initial notices for residential buildings submitted in Wales from 23 November 2022.

Scottish Building Standard 3.28

Standard 3.28 of the Scottish Building Standards Domestic Technical Handbook (December 2022 edition) was released in June 2022 and came into force for all residential Building Warrant applications submitted in Scotland from 01 February 2023.