Help with Kitchen / Dining room floor

Chappers, dazlight and by the sounds of it, the two fitters that have already quoted appear to be giving the correct advice, and it's similar to what I would advise a customer too, no amount of thinking and hoping is goiing to make this particular solution easier or cheaper, to get vinyl down properly, the floor needs sorting properly I'm afraid.

Had it blow on me on bitumin. One of my lads used it while I was away. Half ply and have bitumin.
Was primed too. Im just giving my opinion on what is best for going over bitumin.
Level flex has higher compression strength then NA. As screed dries it gets harder and pulls at the base.
As NA is a weak screed it won't pull as much.
I have used most screeds on the market and found NA sticks to nearly anything.

But still a gamble going over it. As how well it the bitumin stuck to the base?

20m2
I'd use about 7-8 units screed
10kg Ardex DPM1c

I'd be about £700
Uplift, screed, dpm , screed

dazlight said:

Had it blow on me on bitumin. One of my lads used it while I was away. Half ply and have bitumin.
Was primed too. Im just giving my opinion on what is best for going over bitumin.
Level flex has higher compression strength then NA. As screed dries it gets harder and pulls at the base.
As NA is a weak screed it won't pull as much.
I have used most screeds on the market and found NA sticks to nearly anything.

But still a gamble going over it. As how well it the bitumin stuck to the base?

Click to expand...

Indeed its always a gamble going over any existing covering.
Cheers

Thanks for the replies.

Has anyone got any tips when it comes to doing this job, I've already read the sticky thread and watched every video on YouTube, but any first hand tips would be great!.

I'm going to buy a couple of large mixing buckets, have a mate help mix and me lay the screed. I'll buy a large flooring trowl to help spread and also a spiked roller. Is there anything else I'm missing?

1. Uplift tiles and previous slc I poored
2. Remove flaky bits of bitumen
3. Sweep and hoover floor
4. Mist spray with water any bare sandy patches to slow down absorbtion and reduce pinholing.
5. Poor screed toweling into corners and slightly under my kitchen cabinets
6. Use spiked roller to get a uniform 3mm level.
7. Either add dpm1c if vinyl or moisture barrier underlay for laminate
8. If adding dpm add another layer of slc.


Just to add I'm going to leave the tiles down in the utility as this room is about 5mm lower than kitchen and the tiles are different, I still think they are marley tiles however they look newer and are perfectly solid with no cracks. Leaving these and removing kitchen tiles should allow the levels to meet with maybe some additional slc in the utility.




Thanks

Them bricks need taking out as well. Top row of bricks then dpm sheet and fill with screed and granno.
Or you can dpm over them but I never do.

dazlight said:

Them bricks need taking out as well. Top row of bricks then dpm sheet and fill with screed and granno.
Or you can dpm over them but I never do.

Click to expand...

Thanks

My plan was to grind them down as they are only slightly proud and then screed over and through into utility.

Never seen grano before...