hardwall over vandex

[User___removed]

as above.starting a job nx week.builder has painted vandex on the wall,he want`s me to hardwall over it.any info chaps?

 

[henry]

I would have gone for BG render for dpc work , the fact he has put vandex on why hardwall would not be my choice. What is it going over block, brick , groundfloor, first floor.

 

[User___removed]

it`s ground floor.floor to ceiling in vandex.the back of the property is against a retaining bank.

 

[henry]

It would be best in sand cement or a pre bagged render for this kind of works.

 

[simplybesty]

hardwall is not for low suction backings, i wouldnt as i think you will have problems. I would do what henry said. personally i would give it a spatter coat with sand cement and spr to form a good key and then sand and cement.

 

[simplybesty]

also just noticed its floor to ceiling. what about between the joists.

 

[martinemj]

we always use drycoat or limelite for tanking work

we found it harder to use sand/cement as it tends to slump ,water has nowhere to go (cannot dry into wall)
not impossible just harder imo

 

[User___removed]

i said to him use limelite.at the end of the day,you can only mention it them(builders),it`s his job,so any comebacks is on there heads.9 times out of ten they won`t listen.