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    Rasing floor level 50mm over insulated slab - screed or more insulation board?

    Hi all, Our new extension has an insulated slab. Make up of around 150mm of hardcore, 50mm sand, DPM,100mm foil backed PIR board and 100/110mm concrete. This brings us level with the DPC and the original floor slab of the house. (The house is built on a concrete slab). The remaining house has...
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    Warm flat roof Eave height - Permitted development already commenced

    Hi all, I may have the worst luck ever... we are well underway with a small (albeit larger home extension). The neighbours and everyone being fantastic, no issues with anything... The foundations and walls are now up... even though the drawings sailed through the prior approval process, the...
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    Target U=Values

    Hi all, I am having a single storey extension (25m2 ish) built at the rear of the property, with a warm flat roof. Plans done (but some issues have arisen (see my other post in building on steel beam problems!). Doing via a building notice, rather than full plans... I have to resolve this by...
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    Opening between two type of wall - What lintel solution?

    Hi all, I have a basic issue to overcome on a small single storey extension. In a nutshell, the two nibs either side of the 4.0m opening for a new bifold are two different wall types. There is a nib in 300mm (100/100/100) cavity wall one side and a nib in original 9inch sold brick the other...
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