Laying new floor-Fill the gaps

[browneyes1311]

A friend of mine is very kindly lying a new floor for me after water ingress from badly fitted window soaked old one.

He is a perfectionist and is busy cutting out marine ply to fit in the gaps in the structural ribbing, before laying the new floor which will then all be varnished three times before covering with altro non slip vinyl. Old floor did not have the gaps between the ribbing filled.

My question is this. Is it better to just lay new floor on top of the ribbing so wood can breathe underneath? Or is he absolutely right?

[mark]

it all depends on the thickness of the ply 12mm and above no need to fill the gaps.....besides unless they fit perfectly and are glued down the blighters will rattle. flash band is sometimes fitted to quieten the noise or a low density board to act as a noise damper and insulator

just as a for instance an 18mm flooring grade chipboard floor is supported on joists that are set at 600mm centres

mark

[browneyes1311]

Hes cutting em out, varnishing and then yep hes glueing em down. I just didn't want him to do unnecessary work for himself

[boatbuilder]

Varnish both sides or it could warp.

[SamsBus2012]

just as a for instance an 18mm flooring grade chipboard floor is supported on joists that are set at 600mm centres

mark

400mm ctrs for 18mm, 600mm ctrs for 22mm chipboard.

[browneyes1311]

Varnish both sides or it could warp.

Hes varnishing all wood three times on both sides. He really is a perfectionist lol

[mark]

maybe I should have said it would be 600 centres if your going less than 3m unsupported or 450mm or 16'' centres if you where going over 4.5 m and using 4x2 joists without noggins, also the depth and thickness of the joists and the amount of noggins or herringbone is also taken into account......apart from all of that I was demonstrating that there was no need to fill between the ribs as the centres are approx 150mm and browneyes is flooring her van not her bathroom

mark

just as a for instance an 18mm flooring grade chipboard floor is supported on joists that are set at 600mm centres

mark

400mm ctrs for 18mm, 600mm ctrs for 22mm chipboard.

[mark]

he really doesn't need to fit them as they will serve no purpose............but he's best left to it.....its man thing

mark

Hes cutting em out, varnishing and then yep hes glueing em down. I just didn't want him to do unnecessary work for himself

[Jimmy659]

Sorry to jump in on your post browneyes1311.

I need to lay a new floor in my van, and was about to post the same question, I do have a few others too; what material is best to use? I would like to minimise work, so is 12mm the best way to go? Also, is it best to insulate underneath the floor?

Thanks

[kevtherev]

Sorry to jump in on your post browneyes1311.

I need to lay a new floor in my van, and was about to post the same question, I do have a few others too; what material is best to use? I would like to minimise work, so is 12mm the best way to go? Also, is it best to insulate underneath the floor?

Thanks

Marine plywood is best, 12mm min or higher.
I used 18mm chipboard sealed.

Imho the wood itself, being so thick, will provide adequate insulation.

[browneyes1311]

I'm having to replace my units too. So later I will post a thread with the suppliers of Superva and Vohringer I have found with the prices and delivery charges. Also how many sheets you will need ( for kitchen unit plus wardrobe side I believe its going to be three which will leave half a sheet over to make a buddy box)

[Jimmy659]

Sorry to jump in on your post browneyes1311.

I need to lay a new floor in my van, and was about to post the same question, I do have a few others too; what material is best to use? I would like to minimise work, so is 12mm the best way to go? Also, is it best to insulate underneath the floor?

Thanks

Marine plywood is best, 12mm min or higher.
I used 18mm chipboard sealed.

Imho the wood itself, being so thick, will provide adequate insulation.

Thanks kevtherev, I was in the mind set of 12mm Marine plywood, so will definitely look at buying that soon.