Hello all ive got a job coming up small domestic area to screed, problem is customer wants to leave the screed down and maybe put a seal over the top she likes the concrete look im told. its an old house im guessing theres no damproof course and the latex is to go over bitumin residue, id really like to use a waterbase like FB 300 or K11 but are they ok over concrete slab without a damproof? I know na and FB1200 go over bitumin but are they going to mark and dent easily due to low compression strength it is in a kitchen where theres going to be lots of traffic.
forgot to say its got to be done cheap and quick. its only a domestic kitchen so i mighnt risk using a waterbase, but are they moisture tolerant with the slab having no damproof?
Yeah you needs to remove the bitumen residue completely then use something like Stop gap 800 I believe its called & they do another one to can't remember the name Ardex do wearcoat screeds to
If you can grind the hell out of the bitumen residue & get rid of it you could use Ardex 1C then a wear coat screed
customer hasnt got the money for a dpm thats why i think shes leaving the screed and not covering it. im going to have to go with the FB 1200 and risk it.
Don't try & use an normal screeds as a final coat it won't last 2 minutes unless a resin is put over it but that's pricey to. On the cheap your snookered ?
Don't bother mate it'll just get chipped & scratched to hell A screeds need a covering over them plus in a kitchen you've got grease & grime issues which the screed won't like it'll end up discoloured & stained !
if they ain't got the money to even do it half ar$ed then don't bother mate. she'll only blame you down the line.
What about levelit 2 with a seal over it? have to scrape as much of the bitumen off as possible. not sure if it would bleed through the latex over time??
i Know what your saying lads but im going to have to risk it, need to get some monnies in, i will advise the customer and let her decide if she wants to risk it if its a yes i will keep you posted. so my plan is Fb 1200 and for a cheapy seal diluted pva 4 to 1 its a cash job.
haha floors really rough it would need a screed anyway, i know it's not ideal but it mighnt put them on for a while, if there willing to risk it, i will try anything once
wont a moisture tolerant screed be ok? meaning its not going to blow with the moisture coming through the subfloor, so it should stay down?
