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In relation to my previous cladding thread. What should I be fixing 20mm green treated shiplap with? It's a garden room, 4x2 studs, 11mm osb, 2x1 battens. Would a 50mm fixing be OK? I have a 1st fix nail gun but could also borrow a 2nd fix if needed. May screw the bottom few in for easy...

Looking at either shadow gap or shiplap timber cladding for my garden room. I've fit vertical battens. The length of the room is nearly 6m. If I get smaller lengths (3.6/4.8etc),what is the best way to create the seam, is it just a case of staggering the joints vertically or should I use some...

Just about to start planning the interior insulation for my garden room walls. Studs are 4x2 (95mm). Would there be any kind of advantage to acoustic levels, if I was to put 50mm pir tight against the osb and then squash in 50mm of rockwool acoustic wool/slab, with plasterboard and skim on top...

I've got 8x2 roof joists on my garden room, so ripped some in half to create 8x1 backing fascia. I'm using 9mm capping upvc fascia and was wondering what size polytop will be sufficient. Depth of timber backing and upvc is about 32mm. Will 30mm doubled up next to each other hold the upvc fascia...

Building my garden room and the neighbour has kindly donated some tyvek housewrap left over from his extension. I've used another brand of membrane on a small shed I built, the tyvek stuff feels a lot thinner. The other product felt more like a cloth, where as the tyvek has a more paper feel. Is...

Had my edpm turn up along with my fascias and soffits delivered. Fascia has a big crack, apparently caused by forklift. Was planning on getting my epdm stuck down tomorrow as the weather is about to turn cold down south. Is there any reason why I can't do this without having the fascia on...

Got some 3m bifolds coming and was wondering what is suitable to span above. I have some 8x2 laying about,,, would there be much difference in doubling them up vs alternatively using 6x2 flitch beam. Not fussed either way, just want to get it right for the doors TIA

Building a garden room, cold deck, span is just over 4.2m, used 8x2 joists. Roof will dual slope sideways, from 40mm in the centre to zero both sides,,should I be putting in 1 or 2 rows of noggins and am I right in saying they should be slimmer than the joists to aid airflow, so 6x2 or 7x2 for...

I'm building a garden room but due to certain build requirements, I need to hang the joists and slope the (epdm) roof perpendicular to the front doors (side to side as you look at the building). I was going to slope the roof one way and build a small upstand to the front to hide the slope...

Morning all. Building my garden room and wondering what to put on top of timber joists as a subfloor. Base is floating on 12 piers, plenty of air flow. Doing mainly on my own so things taking a bit of time. For that reason and although I will keep it covered whilst building walls and roof, would...

I have a garden room that will span 4.5 x 5.5m. Currently going through PP to try and get up to 3m height. If that fails I'll make do with the 2.5m allowed height but would like to run a steel beam across the 4.5m width to halve the 5.5m length and use smaller timbers. I've been told a 6 inch...

I'm in the process of trying to build a garden room within PD and I'm going around in circles trying to get sufficient head here right. I've got one last hope othwrwise I'm going for PP. The room will be 5m deep and 4.5m wide. The plan is to use 7x2 along the 4.5m span. First question would...

I'm in the process of designing a garden room and would really appreciate some help. I plan to build it with 4 timber rafts bolted together and sitting on concrete blocks. . Garden is long and narrow, so planning 5.5m front to back and 4.5m wide. So max span of each individual raft would be...