Blackswanwood - Thanks, but I'm in Southampton area and we dont seem to have any locally unfortunately.
Stanleymonkey - Thanks pal, I have tried Wicks. The click and collect is. working a fter a 1hr wait to access their site! They may be a goer. However delivery is stating '28 working days' att he moment which is a bit brutal, as I wouldn't be able to get the OSB in my car.
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Bit more progress over the last day and a bit;
Wrapped the house with breathable membrane that I'd ordered with the framework.
Sealed it with some shiny tape, because shiney = good.
Flashing tape in the window -hole
5x1 frame slotted with force into said hole (I swear Id given a 4mm allowance for the flashing tape when making this ******* hole)
Window caressed into said opening with more trusty hammer work.
Then i began to batten off the outside ready for when ever I can get cladding ordered! I've slapped up some 1x1 on the corners so as not to have any cut edges of the cladding visible when its installed.
I now need a load more 5x2 for the soffets, (no idea if thats actually the correct word, but it feels right), I need something to put up at either end of the building (the pointy ends), im thinking 5x1. but I'm not really sure about that.
I need 1 x large pile of OSB (thinking 9mm for the internals, or should I be using 11mm...)
And lots n lots of Rockwool insulation. Again, in terms of thickness in mot sure what to use. In the walls (which. are 4x2's) I was planning 90mm if I can get it, and something similar in the ceiling as this is constructed with 5x2's so there should be an air-gap above the roof insulation when its installed.
Roof covering; WHAT SHALL I USE?
I was going to install steel sheeting, but I cant currently get it. Are there any other more sexy (but still not extortionate) alternatives anyone can recommend?
Any tips or pointers on the above are much appreciated.
Also if anyone works in a builders merchants in Southampton and wants to let me know that the above supplies are available that'd be greeeeeat.