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Thinking through the issues involved in advance of first fit, I realise that the issues of shadow gaps (or not) is one that I need to think through. I did this search on site Are shadow gaps just a style thing? Or a feeling thing? Or used when needs must? Or just cheaper and so a way of saving money? @LadyBuilder would disagree arguing that they are are all the rage, @ProDave uses them with care, I note, @Stones dislikes them but uses them when it suits. @Trw144 uses them everywhere. At this remove (when will I ever get to first fit?) I'm thinking - go for it - shadow gaps are cheaper and will impress people like @LadyBuilder when they come to visit. I bet there are some real gottchas using shadow gaps. What do you think?
Hi, We are renovating our current two storey property and taking the opportunity of building dormers in the loft and introducing a MVHR system. As all floors will be accessed from a single stairwell, all of the rooms leading on to it need to have FD30S rated doors. Consequently I cannot create sufficient gaps under the doors to allow the flow of air for the MVHR system ( I understand the maximum for smoke rated door is 3mm whereas I need 8 -10mm). I do not wish to use smoke thresholds as the intention is to have 'unbroken' flooring throughout the area and wish to avoid cutting holes in the oak doors. Can anyone assist in suggesting either a suitable fire and smoke rated vent product that can be inserted in the walls for each of the rooms , or is there an option to use another fire protection solution for the stairwell which would obviate the need for FD30S doors? Many thanks for your assistance