On 12 Nov,
fred wrote:

I'd recommend using 2400 x 1200 boards as it means fewer joints, your
35sqm with cropped 2280 x 1200 boards comes out at about 13 boards
whereas using 1800 x 900 mm minis comes out at 22 boards or a lot more
joints.

More joints, but heavier boards. I got 1200 boards for my ceiling, and after
lifting one, I changed to 900mm, using the 1200 for walls. With assistance
1200 would be ok. 9.5mm at 2400mm board may be too bendy for single handed
fitting.

One or two large T squares to support the boards are almost essential, 2x2
with a length of floorboard for the top bit is what I used, a few mm more
than room height.

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