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Hopefully the image below will explain better what I would like to do. I knocked it up quickly so its not to scale but I have put on the timber dimensions. The new joist member should be big enough for the span, according to span tables. Obviously this is a solid timber joist, my original...

We moved in about 10yrs ago, the previous owner part boarded it out and did remove some supports. As far as I can make out he took out 3 pairs of struts that left the purlins and attached to a binder at half span. I was obviously concerned but as there is no supporting wall below where the...

Thanks Deluks, I'm not sure I explained it properly, rafter spacing is 350-380mm centres with existing ceiling joists/ ties attached approx 200mm above wall plate all on same side of rafter (every rafter full width of roof). I would like to attach the Posi joists to the opposite side of the...

Hello all, I'm new to the forum and this is my first post so apologies if this has come up before. I am not a builder by trade but last year completed a large extension on my house without any trade assistance (apart from elec, I did the CAD drawings and BC spec myself also). I added three...