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    Vent Axia Air Minder

    Had a Baxi whole house system installed 5 years ago. Cured all condensation problems that you get when doubled glazed and draught proofed. Change or clean filter once per year or more if you make dust. Dead cheap to run. John.
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    sistering rafters

    Hi, My new trussed rafter roof will join onto my existing purlin roof at 90 degrees i.e. on one slope. Will I need to sister/double up on every rafter or just in the areas where the reducing trusses will bear?? Any help on coach bolt diameters and spacings would help as well...
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    screeding mix ratio and materials

    Hi, I need to lay a 65mm screed over insulation in two rooms. What sort of ratio should I be using? Is sharp sand or regular soft sand needed? Do I need to use any coarse aggregate like 10mm gravel in this? Thanks in advance, John. :)
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