Newly installed oak parquet floor - lifting!

[Mouly1973]

We have had new herringbone parquet floor installed in our extended 1930s house. The parquet in the extension section is totally fine – it is the parquet in the old part of the house (the old parquet was removed here and the concrete floor levelled, blackjacked, laytexed and then parquet on top). The raised sections of the parquet are both at the edges of the floor but also worse centrally. They are bowed up from the centre.

We think there is sufficient expansion gaps, although the flooring company said the expansion gaps are less of an issue with herringbone. However there is cork at one end and the parquet does not go to the edge along one side as there are kitchen units.

The very reputable flooring complany are adamant it is rising damp from the substrate. We obviously need to be sure of this.

Initally before the parquet was laid the floor was tested with a damp metre (no damp), but now on measurement there appears to measures of damp.

Any advice?

Read more: //www.diynot.com/forums/floors...newly-installed-lifting.371175/#ixzz2Zi4C2H2R

 

[gregers]

how can there be rising damp if the floor was black jacked with bitumen??

 

[Mouly1973]

Hi there,

I have attached a photo of a section of floor that has been removed. The parquet seems to have bowed up and taken the glue, laytex andsome of the blackjack with it......hope its clear on the picture.

There is a gap you can put your fingers in betwee the laytex and the concrete underneath.

The flooring company said balck jack is not a damp proof course........

Umm.....we can get an independent surveyor in to check for damp, but if we need the whold floor removed, this means the deinstallation adn reinstallation of an entire kitchen, plus all the new work to make the floor good.

Thoughts....

 

[gregers]

iirc black jack(synhapruff)was used to tank walls and floors to stop damp,hence why it was also called liquid dpc.

 

[Mouly1973]

Sorry I am new to this - can you see the image in my album/profile?
//www.diynot.com/network/Mouly1973/albums/
Can I actually load it on my post so it is easier to see?
Thanks

 

[foxhole]

Sorry I am new to this - can you see the image in my album/profile?
//www.diynot.com/network/Mouly1973/albums/
Can I actually load it on my post so it is easier to see?
Thanks

When you post just below the text box is SHOW MY IMAGE.
Click on that then on any image you want to show and it will appear in your post.