Plywood over floorboards before Karndean/Amtico

15 Feb 2013
Reaction score
United Kingdom
Hello All,

I am in the process of renovating the bathroom and there is currently a 12mm OSB board laid over the original floor boards. We intend to have a Karndean/Amtico floor laid so I will be removing said OSB and replacing with 12mm plywood, which I take is common to both floor types.

Questions please:

1. What centres to fix the plywood?
2. What direction relative to the floorboards to lay the plywood?
3. What screws (gauge, length) to use for fixing?

Thanks all
Sponsored Links

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local

Sponsored Links