What is the most relevant Part Q standard for domestic rooflights?

To meet the requirements of Building Regulations Part Q, rooflights need to be designed, manufactured and tested to one of the following standards: PAS 24:2012 STS 202 Issue 3:2011 LPS 1175 Issue 7:2010 security rating 1 LPS 2081 Issue 1:2015 security rating A PAS 24:2012 is referenced as being the preferred standard. Part Q states that windows satisfying the other standards are also acceptable so long as they provide similar or better performance. Most of the standards listed in Part Q, including PAS 24:2012, were originally written with vertically installed windows and doorsets in mind. Some are not suitable for testing the security of rooflights, especially in flat roof applications.

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