Unibond rapid set ultra flex not setting

Tiling questions and answers in here please

Moderator: Moderators

Post Reply
wind1
Newly registered Member
Posts: 4
Joined: Fri Nov 19, 2010 1:28 pm
Has thanked: 0
Been thanked: 0

Unibond rapid set ultra flex not setting

Post by wind1 »

We are having the floor laid in a newly built extension but the Unibond rapid set ultra flex is not setting. It is over the top of electric underfloor heating mats and has set around the edges but not set over the matting. Any ideas?
User avatar
ultimatehandyman
Site Admin
Posts: 24425
Joined: Sat Jul 16, 2005 7:06 pm
Location: Darwen, Lancashire
Has thanked: 1012 times
Been thanked: 918 times

Re: Unibond rapid set ultra flex not setting

Post by ultimatehandyman »

It could be because of the temperature of the room.


Most adhesives will not work below a certain temperature.
royaloakcarpentry
Senior Member
Posts: 6620
Joined: Sun Jan 24, 2010 1:48 pm
Location: Essex
Has thanked: 39 times
Been thanked: 621 times

Re: Unibond rapid set ultra flex not setting

Post by royaloakcarpentry »

Did they cover the heating mat with self levelling compound before tiling? Cover the heating mat with tile adhesive before tiling? Put the heating mat down and then tile straight over it?

I rather suspect from the fact they use Unibond products that they have just whacked the mat down and then laid the tiles straight onto it. If so, then the adhesive bed is probably thicker than the manufacturer recommended depth limit and this is why it is taking so long to cure.
Post Reply

Return to “Tiling Forum”