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 sometimes referred to as storeys.
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. D

    pls advise- best insulation, sub-floor and underlayment for tiled kitchen floor?

    My floor joists are good but I need to replace whole subfloor and tile kitchen floor. I am working on a budget but I want to install functional and durable solution according to British standard for both subfloor and underlayment. Ppl with experience, could you please advise what insulation to...
    • diywork
    • Thread
    • best canada cement board decoupling membrane floor installation insulation kitchen kitchen floor plywood subfloor tile backerboard tiled
    • Replies: 1
    • Forum: Canada Tile Advice
  2. T

    Concrete to wood subfloor

    Recently had an entry addition put on my house. I’m wanting to tile the floor from the split level stairs to the concrete entry way, I know I will have to use backer board on the plywood subfloor at the base of the stairs but how do I ensure Its level across the old doorway and into the concrete...
  3. D

    Subfloor around a toilet

    How would one tile around a toilet where the concrete subfloor stops about an inch or so in diameter around the actual drain? From what I understand the tile needs to go under the toilet flange? The subfloor is brand new but amateur cutting produced this dynamic situation. Please see pic. Any...
  4. M

    Subfloor preparation - matting vs board on plywood

    Bit of an intro - I'm a competent DIYer and have been refurbing the bathroom on and off for the last few months - currently the only bathroom in the house so am refurbing around the family using it, hence it's taking a while. So I've got the shower cubicle in and installed (tanked and tiled) -...
  5. R

    Subfloor and underlayment?

    I’m planning on tiling a 140 sqft room and obviously my biggest concern is cracking. Currently my floor is 23/32” exterior osb over 2x10’s 16” oc across a 12’ span from foundation to beam. I’d like the finished height to meet the 3/4” wood flooring that abuts it and I’m planning on using 6” x...
  6. JordanLincs

    13m² wooden subfloor prep advice

    By far the biggest floor I've done and it's herringbone. The floors been over boarded with chipboard or something simlar and it feels very sturdy. There's a small dip in the middle of the room (few mm of a meter) My thinking is to used an S2 adhesive and Hardie, but it's this right? Do I need...
  7. T

    Subfloor in wetroom

    HI There, im about to layout Jackoboard panels and wetroom shower tray on my bathroom floor, whilst the floor is up im going to take up the uneven and gappy 100yr old floor boards and lay a new subfloor new. Question is, should i use standard flooring chip board, standard 18mm Ply or 18mm...
    • tails123
    • Thread
    • canada floor floor tiling subfloor tanking waterproofing wetroom wetroom tiling
    • Replies: 3
    • Forum: Canada Tile Advice
  8. M

    Solution to a problem..

    Hi all, Laying UFH and porcelain tiles in a suspended first floor bathroom, original plan was to replace old floorboards with 18mm ply then 10mm insulation board before UFH and tiling. Issue is there's going to be up to a 20mm step into the bathroom, is there a way to reduce this considerably...
    • Matty
    • Thread
    • canada cement board problem subfloor underfloor heating
    • Replies: 6
    • Forum: Canada Tile Advice
  9. N

    New subfloor over wet UFH

    Hi all, Been a while. Need to quote for complete bath room. The exisiting tiles finish pretty much level with the carpet in the bedroom. So not sure what the subfloor is under the tiles. I know it is chipboars on battens in other areas of the upstairs. (Guessing not chipboard in bathroom or...
    • Nic_P74
    • Thread
    • canada floor floor tiling new build over subfloor ufh wet wet ufh
    • Replies: 6
    • Forum: Canada Tile Advice
  10. J

    Is My Bathroom Subfloor Good Enough?

    I am DIY refurbing a bathroom in my house and would be grateful for some advice... The subfloor is T&G chipboard, nailed onto joists. It was previously tiled and had UFH but I have now stripped this. My plan is to install Warmup DCM-Pro, with 100mm Warmup insulation boards and then tile on top...
  11. 1

    Subfloor build up on timber joists.....

    Hi all, After a bit of advice on subfloor build up if those in the know could help out? Am in the process of renovating my bathroom in my Victorian terrace - approx 8m2, floorboards have been lifted for fist fix plumbing (not re fixing as they're in a state) My thoughts on subfloor for...
    • 117ws
    • Thread
    • build canada floor floor tiling joists subfloor timber
    • Replies: 7
    • Forum: Canada Tile Advice
  12. JordanLincs

    Subfloor prep advice

    So I have two new quotes and I'm a tiling virgin so want to be prepared for what to expect. Any tips on the subfloor prep is much appreciated. I'm panicking about making a mistake or drastically underestimating the time required to prep. 1. Old floor and wall tiles need removing and placing...
  13. J

    Who can identify the problem here? Crazy paving tiling - dodgy subfloor?

    Following some cracked grout and then cracked tiles, I've lifted a couple of tiles in my bathroom this morning to find what you can see in the photos. I'd like to re-lay replacement tiles but with the subsurface you can see, I'm not sure it's a good idea. The light blue you can see is like a...
  14. R

    What to do with my subfloor?

    Hi all, would love some advice In my new house we are putting a kitchen into a 30sqm room at the back of the house. It has 20ml solid wood floor, TG, floated on what looks like a baton frame which is sunk into concrete. Underneath we have wet UFH We are also knocking through, the knock...
  15. S

    First attempt at laying new subfloor, concrete boards & tiles

    Please can somebody share their knowledge and let me know if I’m on the right track, i.e do you think the steps I am about to undertake are going to prolong the life expectancy of my first attempt to tiling a floor (I am just a mere DIYer and not professional)? The situation is that I’m trying...
    • Sam Firmin
    • Thread
    • boards canada concrete first floor floor tiling laying new build subfloor tile tiles wooden wooden floor
    • Replies: 0
    • Forum: Canada Tile Advice
  16. C

    Subfloor prep and tanking advice

    Hi Guys, I have got loads of good information from you guys from reading through the posts on this forum but I still have a few questions I hope you can help with. I am building a wet room on the second floor. I am planning to drop the floor to joist height with ply and then 20mm Jackoboard...
    • Coops
    • Thread
    • advice floor floor tiling jackoboard prep subfloor tank tanking waterproofing wetroom
    • Replies: 2
    • Forum: Tanking and Wetrooms
  17. B

    Correct build-up of subfloor for UFH + engineered herringbone planks?

    Hi all :handwaving: I realise this is a tiling forum, but I'm guessing some of you lay wood too ;) Does this look right? Joists > 18mm/25mm ply > 6mm UFH insulation boards > electric UFH > SLC > engineered herringbone planks. Also, is there any requirement to stick the herringbone down, or...
  18. D

    Bathroom subfloor prep for porcelain tiles

    So I've decided to finally rip up my 3 year old lino in the upstairs bathroom and lay some lovely looking wood effect porcelain tiles down. I have some experience with past tiling jobs but these were on a concrete floor. Bathroom setup Just over 4m2 area with 25mm wood ply/chipboard flooring...
    • Duchard
    • Thread
    • bathroom canada floor floor tiling porcelain porcelain tile porcelain tiles prep subfloor substrate tile tile adhesive tiles
    • Replies: 13
    • Forum: Bathroom Tiling Advice
  19. P

    How much should I raise the subfloor to match hallway

    Hi there, I will be installing 10mm tiles on the floor of my bathroom and would like the transition to the hallway to be as seamless as possible. The hallway will have engineered wood 18mm thick and in principle will be glued down. After the tiles are installed, i imagine the tile + adhesive...
    • paulo-m
    • Thread
    • canada floor floor tiling how much should subfloor
    • Replies: 5
    • Forum: Canada Tile Advice
  20. J

    best tiles to use on raised wooden subfloor?

    Hi there, We are having water underfloor heating installed into our kitchen which is on suspended wooden floors. The system is going to installed in between the joists and insulated (below) with 100mm rockwool panels. On top of the joists will be structural chipboard flooring. As there will be...
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