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Posted

We need to apply 18mm ply over our 22mm chipboard floor to bring up the level to match our rooms before a 3mm underlay and ultimately lino.

 

My question is should the ply boards be butted hard against each other or with gaps to any extent?

 

thanks

Posted
1 hour ago, markharro said:

We need to apply 18mm ply over our 22mm chipboard floor to bring up the level to match our rooms before a 3mm underlay and ultimately lino.

 

My question is should the ply boards be butted hard against each other or with gaps to any extent?

 

thanks

Any gaps would have to be filled as even with the underlay the lino will show everything under it, as would LVT.

Posted

Thanks @Nickfromwales thats what I thought. 2 more questions though - if there are gaps between boards which I guess will be inevitable what is best to use as filler?

 

Also should I plan for small expansion gaps between the sheets of ply?

Posted
1 hour ago, markharro said:

Thanks @Nickfromwales thats what I thought. 2 more questions though - if there are gaps between boards which I guess will be inevitable what is best to use as filler?

 

Also should I plan for small expansion gaps between the sheets of ply?

I'd just store the plywood in the rooms to acclimatise, prob for 48hrs min, and then they should just stay at ambient and not do much more tbh.

 

Saw a whole house in oxford prepped for Amtico, and they just carried the boards in, butted the boards up to each other, PVA'd the Egger P5's, and then counter-sunk and blasted in a bezillion screws. Holes/gaps were just filled with exterior grade filler afaik, and then sanded back by the Amtico guys who then applied feathering compound and sanded that back again.

 

If the boards are left in these spaces for a day or two that should satisfy any worries, if any actually exist that is. 

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