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Loft storage space - are the joists strong enough?

Postby diynovice07 » Mon Oct 22, 2007 3:25 pm

Hi everyone,

Im new to all this but have just moved house and want to create a bit of light storage space in my loft. I was going to use some Wickes 3/4in 122cm x 30cm tongue and groove loft panel boards.

The insulation is below the level of the joist and as im not going to board the whole loft just a bit maybe 4m2 to put some christmas decorations, old clothes and tubs ventilation wont be a problem and im not giong to board over the bits were there are wires.

My only concern is that the joists look a bit flimsy, i've read a few threads and it seems that my joist are a little thin. They are just over an inch thick, and 5 inches deep and are spaced 14 inches apart. they span 12 feet on one side and 14 feet the other with a wall in the middle.

3/4 inch boards are pretty heavy, add the storage on top, will the joists take the strain or will my ceiling plaster have a party with the floor?
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