TM52 Overheating Assessments
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TM52 Overheating Assessments for Non-Residential Buildings
At JC Sustainability, we provide professional TM52 overheating assessments to help assess and manage the risk of overheating in non-residential buildings.
Developed by CIBSE, TM52 provides a recognised methodology for assessing overheating risk and thermal comfort in buildings. An overheating assessment can help identify whether occupied spaces are likely to experience excessive temperatures and whether changes to the building design may be required.
Our TM52 assessments use 3D dynamic thermal modelling to evaluate the performance of a building under relevant weather conditions. The assessment can consider factors including solar gains, glazing, building orientation, ventilation, occupancy, internal heat gains, shading and building fabric.
What is a TM52 Overheating Assessment?
A CIBSE TM52 assessment is used to determine whether a building is at risk of overheating based on three criteria relating to the frequency, severity and duration of high internal temperatures.
TM52 is commonly used for commercial, office, educational and other non-residential buildings, where maintaining suitable internal temperatures is an important consideration for occupant comfort and building performance.
Identifying overheating risks early in the design process can help inform decisions around glazing, shading, ventilation and other passive design measures. This can reduce the need for costly design changes later in the project.
TM52 Dynamic Thermal Modelling
Our overheating assessments use dynamic thermal modelling to simulate how a building is likely to perform under different conditions. The modelling provides detailed information about internal temperatures and helps identify areas where overheating may occur.
Where required, we can assess different design options and mitigation strategies, helping project teams develop practical solutions while considering thermal comfort, energy efficiency and overall building performance.
Whether you require a TM52 overheating assessment for a new development, an assessment to support planning or design decisions, or advice on overheating risk, JC Sustainability can provide a clear and technically robust assessment tailored to your project.
Contact JC Sustainability today to discuss your TM52 overheating assessment requirements.
Our Assessment Process
Initial Project Review
We’ll review the architectural drawings and local planning policies to understand the project requirements. If we identify any risks we’ll talk this through with you before we start our assessment.
3D Thermal Modelling
A 3D model of the project will be created within specialist overheating analysis software, taking into account the proposed geometry, local shading and proposed ventilation strategy.
Overheating Assessment & Mitigation
A detailed assessment of the overheating performance will be carried out, with advice on how to improve the performance, such as through changing the ventilation/cooling strategy or introducing shading or thermal mass.
Comprehensive Reporting
JC Sustainability will provide a detailed overheating report ready for submission for planning, BREEAM or building control.
FAQs
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Non-residential buildings do not require an overheating assessment for building regulations, but may be required for planning or for credits under BREEAM or WELL.
If your project is a new residential building you will need an overheating assessment for building regulations as a minimum. Please see our services for TM59 and Part O assessments.
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You may be required to provide an overheating study for planning submission, where you may also need to assess against future weather scenarios as well, so to test your project against climate change.
If you already have planning submission and your non-residential project is targeting BREEAM or WELL, you will likely need to provide an overheating assessment during RIBA Stage 4 to demonstrate compliance.
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We typically require architectural drawings, room layouts, window and glazing specifications, construction details, ventilation information, heating and cooling specifications, site and location information, and details of any proposed shading or overheating mitigation measures.
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If an assessment identifies a risk of overheating, we can review the results and recommend potential mitigation measures. These may include changes to glazing, shading, ventilation or building design. The assessment can then be updated to determine whether the proposed measures adequately reduce the overheating risk.
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This varies on the size and complexity of the project. Most dynamic thermal model assessments can be completed within 1-4 weeks of receiving all the required information.
Choosing JC Sustainability
At JC Sustainability, you will receive one-on-one communication with a experienced and personable consultant, who will use their technical expertise to ensure your project runs as smoothly as possible.
Our clients choose us because we offer:
Responsive & reliable support from an experienced consultant
Fast turnaround times
High quality reports that are clear and jargon-free
Nationwide UK coverage
Competitive pricing
We aim to provide clear, honest and helpful advice on our projects. Before starting we will review the project information and provide high level advice to highlight any design risks, making your project runner smoother and avoiding any unwelcome surprises.
Get In Touch
Let us know about your project via the contact information below and we will promptly get in touch to give you some free initial advice and a fee proposal for the assessment you need.