Latex screed

[Tomcat2006]

Folks,

I have a latex screed that's cracked like crazy paving, completely perished and I can see it's been layed on a liquid dpm and rough looking concrete base. The screed looks around 3 - 4 mm thick.

Firstly am I right in thinking it's cracked because its not thick enough or damps got to it??

I need to remove the screed, apply another liquid dpm and re-screed it. My questions are:

1). Whats the strongest waterproof screed I should use in a basement environment?

2). What prep work would you advise, digging the concrete base up is not an option.

Thanks,
A

 

[simeonosen]

Not sure why it's cracked. If not performing then remove it and replace.

To remove scabble it back to the substrate
Remove all screed and a few mm of concrete to give you min. 6mm depth for new screed
Apply DPM
Apply waterproof levelling screed
Cure, protect, use