We asked NHBC about the installation of loft boarding in new and existing homes and what was the best practice in such work.This is what they said. Good Morning Raymond,I hope you are well.Our standards are on our website, which may be of some help to you: http://www.nhbc.co.uk/Builders/ProductsandServices/TechZone/nhbcstandards/?utm_source=Shortlink&utm_medium=Shortlink&utm_campaign=Standards_shortlinkIf this still does not answer your question, please let us know what your query is.Many thanks,Madeleine KayeOperations Training Coordinator
TO WHICH WE UNDERSTOOD BUT JUST TO CLAIFY THEY SAID
Good morning and thank you for your enquiry , The current regulations for loft insulation depth is 270mm. When you have your loft boarded it is vital that the insulation isn’t squashed or removed as this could void your NHBC warranty.
It could also lead to damp or mould problems in your loft as there isn’t sufficient airflow to the trusses. Most companies will use 4×2 timbers to raise the floor, this is not correct, this will give you around a 200mm void to fit 270mm of insulation in!
This is why we treat each and every home as an individual job. Aslong as there is sufficent insulation installed then we advise on using timber to build over the top to support the moisture resistant chipboard and let air flow through .
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Our Nationwide List Of Professional Tradesmen And Installers Can Make The Most Of Your Loft By Making It Into A Storage Space That No Home Is Complete Without. We Use The Very Best Of Loft Flooring Which Is 18mm Moisture Resistant Chipboard To Ensure Safety And Strength At All Times. We Advise That A Survey Is Carried Out To Measure Your Attic For The Amount Of Boarding You Require Unless You Can Do This Safely Yourself. Try Our FREE Video Survey Service To Help You Pick The Ladder And Flooring That Best Suits You By Talking To Our Office Based Experts Who Are Fully Qualified Carpenters With Over 30 Years Experience.
For Simplicity You Can Order the Amount Of Flooring You Want Online ! Our Fitters Use 47mm x 170mm C24 to Build Up & Strengthen Your Floor to A height That does not Squash Your Insulation Or Ruin Your NHBC Warranty .All our Work is Insured & Comes with A 3 Year Warranty On Floors 7 Year Warranty On Ladders
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