subfloor

A floor is the bottom surface of a room or vehicle. Floors vary from simple dirt in a cave to many-layered surfaces made with modern technology. Floors may be stone, wood, bamboo, metal or any other material that can support the expected load.
The levels of a building are often referred to as floors, although a more proper term is storey.
Floors typically consist of a subfloor for support and a floor covering used to give a good walking surface. In modern buildings the subfloor often has electrical wiring, plumbing, and other services built in. As floors must meet many needs, some essential to safety, floors are built to strict building codes in some regions.

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  1. J

    best preparation for over laying 20-40mm stone over suspended subfloor

    I have quoted for a job where the antique reclaimed marble will vary between 20 to 40mm. bedding marble on a solid substrate is no problem but this floor will be laid over a suspended subfllor in an old manor house. Room size is approx 100.00 sq mts. I cannot fix marble over ditra on top of...
  2. R

    Tiling a 3-season room with wood subfloor and underfloor heating

    Hi all - greeting from Sweden. I'm working on a project right now - rebuilding my "uteroom" - an outdoor room that we use for 1-3 seasons. The room itself is dry - walls on all four sides and a roof - One wall is the back of our house, one wall is our neighbor's uterum, one wall is...
  3. M

    unexpected subfloor

    Hello I work for a hotel, the hotel bathrooms were made offsite and transported onto site and then dropped into place. one of my co workers decides to rip up several tiles. they are 18X18 ceramic. he then leaves it to me to clean up his mess. upon inspecting the unit I noticed the sub floor is...
  4. T

    Advice on subfloor

    Hi, I’m after some advice. I’m installing UFH heating in my bathroom. The floor has been recently replaced with 22mm chipboard and is very solid. I’ve been spending some time reading through various posts on the forums. Unfortunately from what I read I should have used 22mm Ply instead of the...
  5. G

    Subfloor prep

    Hi guys after some advice on a prospective job. I have been told that the floor to be tiled is kitchen floor. Its floor boards over boarded with ply ( not sure thickness ) and slc on top. Trouble is in two parts of the floor there is a concrete hearth thats lower than the overplyed floor boards...
  6. O

    Ply subfloor query

    I am currently quoting on a level access wet room on the ground floor of a property. The floor is currently concrete. Although another company has quoted to install a ply subfloor, would that mean they are planning on lifting the concrete?
  7. M

    25x70mm battens for suspended ply subfloor for tiling? which wood?

    We want to make a suspended plywood floor in our ground floor for tiling: - existing concrete - vapour and radon barrier - 25 (H) x70mm (W) battens and insulation boards - 18mm hardwood plywood - 6mm backerboard - 30x60x9mm porcelain tiles DO YOU THINK 25mm BATTENS ARE ENOUGH? (I read that the...
  8. M

    screwed down wood batons piercing vapour barrier in Kitchen subfloor

    Hi tilers! First of all, thanks for all you have written in this great forum! :hurray: We would be very grateful for some advice on this situation. Our kitchen floor needs to be tiled. It has a concrete floor, probably without damp proof barrier in it. Here is what we plan to do: put down...
  9. D

    Subfloor / substrate - advice

    Hi after some thoughts on my intended ideas for the following job. Any reccomendations would be welcome. Looked at a job to tile floor of en suite bathroom. The previous tiles have been lifted and the full bathroom suite removed. Toilet / sink / shower tray. I can see there is weyroc floor...
  10. D

    Subfloor for Victorian hallway mosaic floor tiles

    Hi, The existing concrete subfloor in my Victorian house hallway has broken up and needs replacing. I've removed as many of the original tiles as possible (mainly black and white 2 inch by 2 inch) and would like to re-use them once a new subfloor is in place. I've had some quotes and advice...
  11. S

    multiple problems with bathroom subfloor

    Hi there, long time reader, first time poster! Im having a nightmare with my bathroom renvolation. I have gutted the room down to the floor joists. the old floor was 22mm chipboard which was very badly water damaged. The floor joists are 2" by 5 1/2" and span just over 2400mm. they are at...
  12. S

    Insulation Board increasing height on concrete subfloor...

    Hi All, Im new to the forum and underfloor heating in need of a little of advice.... Im in the process of renovating my kitchen (which is a galley) and looking into underfloor heating on the middle run (5mx 1.2m). I have removed previous tiles and in process of taking up previous adhesive...
  13. P

    subfloor advice please!!

    Hi all I am looking to get some advice on a floor thats to be tiled with 600x600 tiles. It's 18mm plywood stright onto the joists. Can anyone let me know if this is a good idea, if not whats the best thing to do. Thanks Paul
  14. G

    Wetroom subfloor advice please

    Hi there, New to wetrooms and have been reading up on here trying to decide what I need to do for mine. Thanks to all the good advice on loads of threads I think I've got a plan - hoping you can check I'm not about to make a complete mess of it:yikes: It's a 3.2 x 2 metre room and I'm...
  15. G

    subfloor for kitchen tiles

    hi went to a very small job this morning which turned into customer asking me to finish whole kitchen !!, including tiling the floor. floor is 2m x 3m well fixed tongue and groove. floor is solid with no loose boards. having read several other threads on here i'm still not sure what is the best...
  16. J

    New bathroom subfloor advice, pls...

    Hi, I'm just about to start redoing the bathroom floor and I would really appricate some feedback on what I prepose to do. So I dont make an expensive mistake! The original subfloor is 22mm (equivalent) t&g floor boards. But these have been patched and repaired etc many times. So I am thinking...
  17. W

    Subfloor Specs

    Hi all, I'm currently renovating my kitchen and will be laying porcelain tiles to the floor but am after a bit of advise from you guys first. The room is roughly 3.6m x 4x6m, part of which is a concrete floor, part timber joist construction at 16" centres. (Timber joist area approx. 3.6m x...
  18. T

    I really need advice on my subfloor pre tiling

    At the risk of sounding melodramatic, I'm losing the will to live because of the hassle I'm having with my bathroom so I could really use some hard and fast advice. My bathroom was ripped apart, right back to bare joists and stud walls. I replaced the 18mm chipboard flooring with more of the...
  19. P

    subfloor backer boards

    Hi guys/girls, i have taken up the old flooring and found that the floor is not quite level across the 13m run and wanted to know is it possible to use sand cement to level the backer boards im about to put down as doing it in slc would be financial suicide due to the size, the floor is wood and...
  20. U

    Tile subfloor over osb new construction

    I was shown how to prepare the underlayment for a ceramic tile floor by simply laying 1 layer of plywood on top of the OSB flooring on a new home. The plywood was glued on with PL 400 adhesive and then screwed down every 6 inches. The tiles are now all cracking and coming loose and some of them...
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