[Closed] Landscapers / builders help! - Decking this time

Thanks john,

Tbh I’m not quite sure what happened - I levelled each support to the ones immediately next them using a 1.2m level.

It could be that my joists are slightly warped but it some places there’s quite a gap.

I don’t have to add noggins but am a little worried about it’s rigidity given it’s quite a big area.

Any other suggestions for filling the gaps - I think I have some floor tiles somewhere, I assume they’re less likely to crack?

Another question..

Should I be checking the level between each joist or trying to ensure more that the “surface” of the joists is level in terms of being flat for the deck boards?

I think to your last question it's the overall level of the frame that's important. I think you're right to put noggins in, it will improve rigidity and stop the joists splaying and twisting.

It can be easy to get the block level wrong, joists may well be warped or even slightly different sizes. I think roofing slate is a builders packer of choice, if you get hold of a couple of them and cut them up.

As above, slate. It also acts as a son and many houses was used as the dpm

Thanks, I’ve got 5 slates from the builders merchant so that should help.

I had a quick look and it seems in some places the wood has bowed upwards - it’s level if force it down onto the support.

So in that case, should I just rely on the weight of the boards pushing it down?

Sorry for all the questions. I worked in IT for 12 years and my brain doesn’t like how non binary this sort of stuff is!

I would have thought the boards screwed down would deal with any bowing.