Tips on using Ardex Feather Finish

[8rianroberts]

Chipboard flooring in the middle of the bedroom is slightly (circa 3mm) out of level for a stretch of about 6 feet. I propose to use Ardex Feather Finish. I have a couple of questions though - a) do I need to prime the chipboard? and I think the "out of level" varied a bit between summer and winter - so is the Feather Finish flexible? If not can anyone recommend something more suitable. Many Thanks for any suggestions.

 

[dazlight]

Ardex K40HB will be better

 

[dazlight]

Prime the chipboard 1st. What flooring is going down

 

[8rianroberts]

The covering is 20 year old carpet. The mismatch in chipboard has gradually created a crease in the carpet in the middle of the bedroom (upstairs). I am hoping that if i level out the floor I can somehow smooth the crease out over time.
Thanks for the Ardex K40HB suggestion I'll check it out.
I guess one of those floor levelling squeegees will also come in handy.

 

[dazlight]

Yes mate. But a straight bit of wood will do.