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New timber floor on top of old timber floor?

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  1. #1
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    Default New timber floor on top of old timber floor?

    Hi Guys (and Gals)

    I'm doing a reno and have lifted the carpet in one of the bedrooms, and.... Bingo!!! Kick @@@@ timber (pine) flooring.
    I then lifted the carpet in Bedroom 2 and not so bingo Kick @@@@ timber flooring with a infill strip in the middle of the floor where a stud wall used to be
    Bedroom 3 worse. In fact every room I went through got a little worse than the previous one.

    So I was thinking that since I have removed all the skirtings I could just run a drum sander over the lot to even it all up a bit, then just secret nail new cyprus pine floor boards directly on top.

    Or maybe I should consider a bamboo floating floor?

    So it's over to you guys.
    Comments, Thoughts ???

  2. #2
    Community Moderator phild01's Avatar
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    I'd float.

  3. #3
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    Default New timber floor on top of old timber floor?

    Worth repairing what youve got?

  4. #4
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    We float too

    Bamboo flooring is a finished floor once it is laid. No sanding and varnishing required. The underfloor does have to be level though. Lay the floor and add the skirtings etc and its done.

    Oh yea, go for solid bamboo, not the cheap and tacky stuff made from MDF.

    Those who want to ignore the science are increasingly alone. They are on their own shrinking island.


  5. #5
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    Default New timber floor on top of old timber floor?

    My preference is secret nailing solid flooring but it's pretty much a personal choice.


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  6. #6
    Community Moderator phild01's Avatar
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    Quote Originally Posted by jimfish View Post
    My preference is secret nailing solid flooring but it's pretty much a personal choice.


    Sent from my iPhone using Tapatalk
    They are going over existing floorboards, would you rip those out, lay PB then glue and nail? I wonder how well new floorboards would be over existing, especially if Cyprus.

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    4K Club Member Marc's Avatar
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    Is the old floor cut in or are the frames on top of the floor?
    If the old floor is cut in rip it out and lay proper flooring Cyprus or hardwood over the joist.
    If the frame sits on top of the flooring, lay new floorboards over existing but make sure it is dead flat and that you don't have humps all over. Sanding will of course help with glue adhesion but will do nothing about uneven floor. To fix that, will be another chapter.
    “In the fields of observation chance favors only the prepared mind.”
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  8. #8
    Community Moderator phild01's Avatar
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    Personally I wouldn't like laminating new floorboards to existing floorboards.

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    4K Club Member Marc's Avatar
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    I had it done by a flooring guy, part of the house was on yellow tongue and part on very old floorboards. We put new 140mm wide Cyprus all over. Glued and secret nailed. No problems in 5 years. Some cracks due to the timber being not seasoned enough but very minor and none over the old boards.
    Pulling the floor out if the frame is on top of it requires extra joists. You may want to do it for a bathroom but surely not for the whole house. Don't think the OP has much of a choice.
    Of course there is floating floor if you don't mind it, way cheaper and easy DIY
    “In the fields of observation chance favors only the prepared mind.”
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  10. #10
    Community Moderator phild01's Avatar
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    Gluing would be the go if you did it.

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    Worth repairing what youve got?

    Nah, unfortunately not. Gaps here and there, different widths, different finishes.

    If it was a small area, one room maybe, I'd consider pulling up the floor and re-laying

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    3K Club Member johnc's Avatar
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    Have done it with 12mm boards overlaid at 90 degrees to old floor, secret nailed we used a PVA two pack product that is no longer available, since then of course we have seen the emergence of the cartridge products. done around 20 years ago, minimal movement and recoated once. We knocked off the high points with a belt sander, the old floor wasn't in bad order, never coated, just minimal cupping of the boards.

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    Thanks for the replies, So I think I'm going to go with sanding the existing floor, overlaying at 90 degrees with pine boards (glue and secret nail). I must admit that I am still a little torn. I like the look and feel (hardness) of the strand bamboo. But the factors that are persuading me are: - refinishing/re-sanding may be required down the track - there is one section that runs the length of the house, over 20 Mtrs (Lounge, Dining, Kitchen and Hallway) I worry about cupping, expansion and contraction (ie joints opening in the bamboo) - Pine would be cheaper to lay than Bamboo but after sanding, varnishing, etc, the price of the two becomes very similar

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    Why pine? Tas Oak or other harder options would be better IMHO

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    Blackbutt or spotted gum are popular and for good reason, they look great.

  16. #16
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    Default New timber floor on top of old timber floor?

    Quote Originally Posted by phild01 View Post
    They are going over existing floorboards, would you rip those out, lay PB then glue and nail? I wonder how well new floorboards would be over existing, especially if Cyprus.
    No I wouldn't rip them out but condition of existing floor would a factor in the decision, I would definitely apply a glue troweled to entire floor.

  17. #17
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    Yeah, Tassie Oak, Blackbutt, Spotted Gum, etc are all great options but the budget is getting tight.

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