It's funny over the last 20 years on Karndean. do this do that, use this screed and don't, use f44 then don't. Well before I measured a job which is a kitchen with existing floor of knight tile copper with gold feature strip. At first I thought the sub floor was plywood, but after seeing a tile which the bloke had taken up I realised the Karndean was glued straight to chipboard. The glue looks like f3 to me but could be f44, anyway the floor looks perfect. Completely flat with no joint lines showing through. Also it got laid in 1999. Lucky maybe but goes to show you can get away with not doin it properly. Told them it needs plywood down now when i redo the floor in knight tile onyx, they didnt look convinced. Well post a few pictures later when mrs gets off the laptop
Ive seen that too. Amtico wood plank on the 45 with border looked amazing, straight onto chipboard. The firm I was laying the new floor for always put down 6mm ply then 700 over the top, god knows how he convinced them to go with the full prep but they did.
I'm guessing you'd get away with that about 80% of the time. Problem is we need to get it right about 100% of the time.
Spot on sandy I told them that but said 50% There son was meant to ring me tonight, he ain't yet. See if I get the job.
As said, sometimes you get away with it. Reasons why= Chipboard, there is different types of chipboard. Depending on what grade of chipboard will make the difference with it sticking and not. I could sit here and explain to you all the differences in chipboard, but could you imagine the like's of karndean etc writing instructions for installing floors and trying to ex-plane the different types of chip board? Most installers don't know by looking the difference between chipboard and plywood. Hence easier to say "don't lay direct to chipboard" They can cover themselves easy this way. As for F3, it may just be on F3. LVT's react in a different way to domestic vinyl to F3. it really is a guessing game as to what reaction 'might' take place. Most of the time LVT wont react, put as its classed as a Vinyl then we just simply follow the same rules as domestic roll vinyl, again its a easy and simple instruction. It all comes down to doing the job the way you know wont fail or doing the job with a 50/50 chance it will be o.k.
Anyone remember those 6 x 6 inch Amtico tiles they use to do, well about 3 years ago I went to an insurance job for a shop, basically their toilet broke and the insurance replaced it but the floor was now short of the pan as the new one was a different shape. So anyway I gets there and walk in and and I'm seeing roll top bath in the middle of the room b/day sink toilet all very ornate and tricky looking, I was down to strip out those little tiles and ply then new ply and forbo tiles on the 45. There I was thinking this is gonna be a long day, so start to pull up the tiles and to my utter disbelife they were stuck down with spray adhesive, they were down nice and tight flat firm, but not so bad that I was able to peel them up without any damage to the ply that was down. Turned out being a nice easy day forbo tiles went straight down on the old ply obviously though I used forbo's adhesive.
Here are the pictures, the son rang before, i'm having to do a labour on fitting tiles only :? He is fitting ply and supplying tiles, design strips & Glue. Hope he prep's it right :evil: [attachment=0:29fza54b]030.JPG[/attachment:29fza54b] [attachment=1:29fza54b]029.JPG[/attachment:29fza54b]
