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<br /> Technical<br /> Extra<br /> April 2017 | Issue 22<br /> NHBC Standards<br /> n Accomodation of movement in rendered walls page 3<br /> n Mechanical ventilation with heat recovery (MVHR) page 6<br /> Regulation and compliance<br /> n Part R – Electronic communications page 8<br /> n Service penetrations through external wall<br /> constructions of residential buildings page 10<br /> Guidance and good practice<br /> n Dry-fix verge systems page 12<br /> n Overheating in new homes page 14<br /> n Balconies – are you building them correctly? page 16<br /> n NHBC Foundation page 18<br /> n Avoiding cladding failures page 20<br /> Information and support<br /> n Technical news <a title="Technical Extra Issue 22 page 1" href="http://viewer.zmags.com/publication/4700c32c?page=1"> Technical Extra April 2017 | Issue 22 NHBC Stan</a> <a title="Technical Extra Issue 22 page 2" href="http://viewer.zmags.com/publication/4700c32c?page=2"> Foreword Welcome to Technical Extra 22 Construct</a> <a title="Technical Extra Issue 22 page 3" href="http://viewer.zmags.com/publication/4700c32c?page=3"> NHBC Standards Who should read this: Architects,</a> <a title="Technical Extra Issue 22 page 4" href="http://viewer.zmags.com/publication/4700c32c?page=4"> NHBC Standards Accommodation of movement in ren</a> <a title="Technical Extra Issue 22 page 5" href="http://viewer.zmags.com/publication/4700c32c?page=5"> NHBC Standards Accommodation of movement in ren</a> <a title="Technical Extra Issue 22 page 6" href="http://viewer.zmags.com/publication/4700c32c?page=6"> NHBC Standards Mechanical ventilation with heat</a> <a title="Technical Extra Issue 22 page 7" href="http://viewer.zmags.com/publication/4700c32c?page=7"> NHBC Standards Mechanical ventilation with heat</a> <a title="Technical Extra Issue 22 page 8" href="http://viewer.zmags.com/publication/4700c32c?page=8"> Regulation and compliance Who should read NHBC o</a> <a title="Technical Extra Issue 22 page 9" href="http://viewer.zmags.com/publication/4700c32c?page=9"> Regulation and compliance Part R – Electronic c</a> <a title="Technical Extra Issue 22 page 10" href="http://viewer.zmags.com/publication/4700c32c?page=10"> Service penetrations through external wall constr</a> <a title="Technical Extra Issue 22 page 11" href="http://viewer.zmags.com/publication/4700c32c?page=11"> Regulation and compliance Service penetrations </a> <a title="Technical Extra Issue 22 page 12" href="http://viewer.zmags.com/publication/4700c32c?page=12"> Guidance and good practice Who should read this:</a> <a title="Technical Extra Issue 22 page 13" href="http://viewer.zmags.com/publication/4700c32c?page=13"> Guidance and good practice Dry-fix verge systems</a> <a title="Technical Extra Issue 22 page 14" href="http://viewer.zmags.com/publication/4700c32c?page=14"> Guidance and good practice Overheating in new h</a> <a title="Technical Extra Issue 22 page 15" href="http://viewer.zmags.com/publication/4700c32c?page=15"> Guidance and good practice Overheating in new h</a> <a title="Technical Extra Issue 22 page 16" href="http://viewer.zmags.com/publication/4700c32c?page=16"> Guidance and good practice Balconies – are you </a> <a title="Technical Extra Issue 22 page 17" href="http://viewer.zmags.com/publication/4700c32c?page=17"> Guidance and good practice Balconies – are you </a> <a title="Technical Extra Issue 22 page 18" href="http://viewer.zmags.com/publication/4700c32c?page=18"> Guidance and good practice NHBC Foundation Who </a> <a title="Technical Extra Issue 22 page 19" href="http://viewer.zmags.com/publication/4700c32c?page=19"> Guidance and good practice NHBC Foundation Guid</a> <a title="Technical Extra Issue 22 page 20" href="http://viewer.zmags.com/publication/4700c32c?page=20"> Guidance and good practice Avoiding cladding fa</a> <a title="Technical Extra Issue 22 page 21" href="http://viewer.zmags.com/publication/4700c32c?page=21"> Guidance and good practice Avoiding cladding fa</a> <a title="Technical Extra Issue 22 page 22" href="http://viewer.zmags.com/publication/4700c32c?page=22"> Guidance and good practice Avoiding cladding fa</a> <a title="Technical Extra Issue 22 page 23" href="http://viewer.zmags.com/publication/4700c32c?page=23"> Guidance and good practice Avoiding cladding fa</a> <a title="Technical Extra Issue 22 page 24" href="http://viewer.zmags.com/publication/4700c32c?page=24"> Guidance and good practice Avoiding cladding fa</a> <a title="Technical Extra Issue 22 page 25" href="http://viewer.zmags.com/publication/4700c32c?page=25"> Information and support Copies of the new Stan</a> <a title="Technical Extra Issue 22 page 26" href="http://viewer.zmags.com/publication/4700c32c?page=26"> Information and support Information and support</a> <a title="Technical Extra Issue 22 page 27" href="http://viewer.zmags.com/publication/4700c32c?page=27"> Information and support Information and support</a> <a title="Technical Extra Issue 22 page 28" href="http://viewer.zmags.com/publication/4700c32c?page=28"> Useful contacts for technical information and adv</a>