bathroom renovation - time for concrete to cure

[norman]

I have a query about floor preparation.
The concrete in our bathroom was poured and left to dry for four days.
Then the waterproofing membrane was painted on.
The next day, air bubbles had appeared in the membrane and a second coat was put on.
The second coat was left to dry for two days and then the screed went on.
Is 4 days long enough for the concrete to cure? Temperatures at the time were average, probably between 20 and 30 degrees celcius during the day.

 

[Scott]

This was posted in April 2009 so its probably dry by now 😳

 

[Time's Ran Out]

What happened to bighen - good info was received there.

 

[jay]

Got some bad news for ya, The concrete that was first poured needs to dy for at least a mth.
The bubbles appearing are related to moisture trying to escape.
Green concrete needs to have an epoxy type waterproofing.
If its a regular acrylic/polyurethane WP it will fail.

This one will do the job Broken Link Removed

If ur tiler hasent use an epoxy type wp and is unwilling to remove the screed and existing WP u can leave it to dry for 3 weeks and go over the top with normal acrylic/polyurethane WP.
You need comfirm which type was used.

Regards
Trev

youve got it all covered trev

 

[heavytrevy]

haha too bad it was a thread dig 😛rrr: