With regard to Building Regulations and legislation, are there any official documents that deal with the prevention of overheating caused by solar gains in summer?

Yes, this is dealt with by the following documents:

	BR 364 Solar shading of buildings;

	AM 10 Natural ventilation in non-domestic buildings;

	BS 8206 Part 2 Code of practice for daylighting;

	CE129 Reducing overheating – this represents a designer’s guide;

	TM37 Design for improved solar shading control;

	Building Bulletins 87 and 101, which specifically deal with school buildings;

	SAP 2005 Appendix P – this specifically has procedural information regarding testing the extent of solar gain.