HELP! Painted flat roof problem

perc

Hi I painted my flat roof with this:

http://www.screwfix.com/app/sfd/cat/pro.jsp?id=69277&ts=17831

last wednesday and it has not rained until today. Now alot of the roof has turned from black to grey/green in colour and where it has changed colour the waterproofer is still soggy (wet) but where it is still black it is hard. Is this normal?

:eek:

Thanks for any advise that you can give me.....

Norfolk_Jim

was your roof completely dry before you applied the product? I know it says suitable for damp surfaces but it should no remain wet or be soggy. I'm not sure about this particular product but the one I use needs 1 hour without rain after application. Also, did you give the stuff a really good stir before you applied it - tends to seperate if standing for long. The thin areas wont really cure properly unless it was thoroughly mixed. Keep a close watch on it in the sun and see if it blisters or begins to peel off.