H/Wood floor over chipboard.

I want to lay 18mm thick h/wood flooring but don't want to lay directly onto the old floorboards ..not wanting to raise the floor level by 20mm or more. If I remove the floorboards and put 12mm thick ordinary chipboard ..is this not strong enough and too prone to dampness even though there is no dampness in this part of the house?

I know I can use 12mm ply but want to keep the cost down.

Thanks.

Arthur

Reply to
Arthur 51
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Arthur 51 wibbled on Tuesday 27 October 2009 20:34

Can't see a problem with flooring chip.

Either that, or uprate your hardwood flooring - some can be laid direct onto joists.

Reply to
Tim W

Why not use nothing under them? 18mm hardwood is tough stuff. New house floors are just 18mm of chipboard.

NT

Reply to
NT

Why not use nothing under them? 18mm hardwood is tough stuff. New house floors are just 18mm of chipboard.

Thanks. But I want to raise the new finished level about 10mm to match up the floor in the hall.

Arthur

Reply to
Arthur 51

Then 9mm of whatever you want underneath will do. It doesnt matter what, the hadrwood is more than strong enough, assuming its planks and not parquet.

NT

Reply to
NT

It doesn't even have to be a sheet. If the joists are 4x2, then 50mm wide strips of 9mm chip will be fine provided the flooring nails reach the joists. If not, I'd go for strips of ply. (We've just had a new floor, and the guy laid strips of hardboard over the joists to bring the new level upto the old door architrave etc.

Reply to
Martin Bonner

yes, makes it very cheap.

If your hardboard isnt T&G its best practice to put a layer of hardboard under it to block smoke.

NT

Reply to
NT

Thanks to all.

The timber yard had 9x45 redwood to lay over my 3" x 3" joists (There are 2 sleeper walls spaced across the rom width) An earlier poster mentioned chipboard..the guy at the timber yard said the nails wouldn't grip chipboard so I opted for the redwood. Another option I didn't think of at the time was to buy a sheet of 9mm or 12m ply and have them cut it into 70mm strips. But I get the feeling this request might have result in a response involving a high number of words beginning with F.

Arthur

Reply to
Arthur 51

Arthur 51 wibbled on Thursday 29 October 2009 14:39

Another option I didn't think of at the time was to buy a

They would have cheerfully done it - and charged. B&Q do that too - although the first couple of cuts are free.

Useful if you do want long regular strips.

Reply to
Tim W

with joists that mean it might be worth gluing the timber on top with plenty of pva. Why;

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Reply to
NT

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