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I am building a shed with 4x2 framing 600mm centers i am fitting 125x12mm redwood shiplap how should i fix it to framework screws or nails and what size screws etc would 1 screw in center do or should i put 2 at each frame :?:

Hi Anto personally I would use 2 1/2" galvanized lost head nails. If you just put 1 in the middle then the board will cup.The method I would use is to fix the bottom board 12m/m lower than the sole plate and this will act as a capillary and stop the sole plate from rotting.Nail the btm board about 40m/m up from the btm of the board and into the sole plate.Next cut a block at 100m/m long and rest this on the top of the board and mark with a pencil on each stud .Hold the next board to this mark an nail it 12m/m up from the bottom of the board (rough eye measurement).This nail will also go through the top of the board that is underneath.Doing it this way you only use 1 nail per board per stud but you actually nail each board top and btm.Check the boards every 3 or 4 for level and adjust accordingly. OK a few tips if the lengths of the board will allow cut them a few inches longer and this will help prevent the boards from splitting when you nail them close to the end.Mark the end studs and cut plumb later.Leave the nails 3m/m proud and sink later with a nail punch.This will stop the hammer from marking the boards.When fitting around the door or window fit both sides together and keep checking the measurement from the top of the door frame or window,so they don't look uneven when you get to the top.When nailing next to the door or window stand the nail on a solid surface and tap the sharp end of the nail a couple of times with a hammer and this will also prevent the board from splitting.You may consider fitting building paper on the studs to stop the wind from whistling around the shed at a later date.If the shed is long don't put to many joints on one stud this will make the shed weak at this point.Use the tips you want,disregard the rest.Any questions just ask have fun Billy.

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