Karndean floor

[steve2]

I've had a Karndean floor installed and after 6 months noticed that marks appeared. Upon investigation it proved to be the pattern of cracks that had appeared in the levelling compound showing through. The existing floor is concrete, 2 inch sharp sand and cement screed and a skim of levelling compound. Onto this the installer put a layer of levelling compound and stuck the flooring onto this. The floor has central heating pipes embedded in it, they are insulated but still give out quite a lot of heat. The existing floor had been down for 15 years and prior to installation of the Karndean didn't have any obvious cracks. The top layer of compound is firmly bonded to the lower level. Has anyone experience this situation?

 

[DHTiling]

Hi steve and welcome..was the levelling compound latex based..?


you also might get more answers on our sister forum...Flooringadvice forum for floor layers. http://www.flooringadviceforum.com/index.php

 

[chrisroe]

if the original slc was a latex based product then the top layer also needed to be latex

do you know if the floor was primed before the top layer slc was put on ?

 

[bassman]

:welcome: To the forum :guitarist:

 

[Gazzer]

Hello and welcome

 

[steve2]

Not sure the product is UZIN NC 152. Perhaps you can answer this for me? Steve

 

[steve2]

I don't know what SLC was down originally and can't find out as it was 15 years ago. I believe it was primed and the Uzin NC 152 has bonded put cracks have now appeared

 

[chrisroe]

its a water based slc and one of the best out in the market so who ever did the job did not scrimp on materials which is good but it could mean deeper problems it is suitable for hot water heating systems so im afraid it needs a big of digging to find out

is it woodplank or tiles you have
do you have spare ones
where are you based

 

[White Room]

Hi and welcome

 

[Dan]

Welcome to tilersforums.com 🙂