Hea02 Minimising overheating from solar gain – Above Green

(2 credits)

Aim

To recognise and encourage external shading features that minimise overheating from solar gain.

Question

Are there external shading features that minimise overheating from solar gain?

Credits	Answer	Select a single answer
0	A	Question not answered
0	B	No
2	C	Yes

Assessment criteria

Criterion

Assessment criteria

Applicable answer

Potentially compliant external shading features include:

Building-integrated measures, e.g. overhangs or fins.
External shading or brise soleil.
The asset’s form or layout mitigates the potential for glare from sunlight, e.g. adjacent buildings provide adequate shade, north facing side windows for locations in the northern hemisphere, etc.
A combination of the above.

External shading features are required on all windows of Homes and Apartment units, where there is a risk of overheating. They are also required in any communal areas that are considered an occupied space, e.g. a building management office, and any communal areas that are considered occupied space, where there is a risk of overheating.

Evidence

Criteria	Evidence requirement
-	The evidence below is not exhaustive, please also refer to the ‘BREEAM evidential requirements’ section in the scope of the Guidance for appropriate evidence types which can be used to demonstrate compliance.
1	Photographic evidence of external shading features.

Definitions

Occupied space:

A room or space within the asset that is likely to be continuously occupied for 30 minutes or more per day by an asset user.

Additional information

Solar shading guidance:

The BRE report ‘BR 364 Solar shading of buildings (Second edition)’ published in 2018 by IHS Markit provides guidance on commonly used glare control features and shading devices and can be used to help find the best solution for a given building application.