# Are there any mandatory requirements under the existing Building Regulations with regard to replacing windows?

**URL:** <https://reachback.builtintelligence.com/t/are-there-any-mandatory-requirements-under-the-existing-building-regulations-with-regard-to-replacing-windows/2800>\
**Category:** Part N Glazing\
**Created:** [15 February 2013 13:17 UTC](https://reachback.builtintelligence.com/t/are-there-any-mandatory-requirements-under-the-existing-building-regulations-with-regard-to-replacing-windows/2800 "2013-02-15T13:17:00Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Build\_Regs\_Advisors](https://avatars.discourse-cdn.com/v4/letter/b/ee7513/32.png) [@Build\_Regs\_Advisors](https://reachback.builtintelligence.com/u/Build_Regs_Advisors)\
**Post date:** [15 February 2013 13:17 UTC](https://reachback.builtintelligence.com/t/are-there-any-mandatory-requirements-under-the-existing-building-regulations-with-regard-to-replacing-windows/2800/1 "2013-02-15T13:17:00Z")

</div>



---

<div class="post-metadata">

**Author:** ![Build\_Regs\_Advisors](https://avatars.discourse-cdn.com/v4/letter/b/ee7513/32.png) [@Build\_Regs\_Advisors](https://reachback.builtintelligence.com/u/Build_Regs_Advisors)\
**Post date:** [15 February 2013 13:17 UTC](https://reachback.builtintelligence.com/t/are-there-any-mandatory-requirements-under-the-existing-building-regulations-with-regard-to-replacing-windows/2800/2 "2013-02-15T13:17:08Z")

</div>

Firstly, they should include trickle ventilators. Secondly, ventilation openings should be at least as large as the original window.