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Damp concrete floor preparation for parquet

Discussion in 'Subfloor Preparation' started by cosmicbeard, Dec 18, 2013.

  1. Matt

    Matt Well-Known Member Staff Member

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    here are your options, 1 being the correct way, 3 being the bodge it hope way.

    OPTION 1- Remove concrete and replace (best option)

    OPTION 2 - are really the ardex system.

    Personally if you are going to shot blast / grind the subfloor then go DPM 1C direct to the cleaned concrete. (you will be saving money here instead of applying compound as suggested by them which will pay for shot blasting or not far off)

    Prime the DPM 1c with ARDEX P 82. Then apply smoothing compound. Personally i would use Ardex K11 or K15.

    Always stick with a system. Do not mix and match different manufactures products.


    OPTION 3 - IF you decide not to clean adhesive off the subfloor then use Ardex NA - DPM 1C - Ardex na. If you refer to my other post tho, doing this is asking for trouble. It might last 1 month, it might last 5 years, it might last 10 years but it will fail at some point.
     
    Last edited: Dec 18, 2013
    Matt, Dec 18, 2013
    #21
  2. UVcure

    UVcure Well-Known Member

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    Matt have you ever used the fballs DPM f76 and then laid directly on it within 24 hours using thier b95 adhesive, might save the latex if he prepares the floor well first ,
    Fball say it ok and it worked well on a large job for me,but only the next day, longer than that and you have to prime and latex
     
    UVcure, Dec 18, 2013
    #22
  3. Matt

    Matt Well-Known Member Staff Member

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    F76 can only be used to hold back residual building moisture and not damp i believe?

    Also im not keen on any systems that say you can bond direct to something within a time period. We see a lot of failed floors where the problem is the contractor cant prove that they went over the dpm within the specified time frame. Also the time frame they give is dependant on temperature and humidity. We have had contractors telling us they went on in the specified time but the temp / humidity was not as specified for the time frame so they have not had a leg to stand on in the event of a claim.
     
    Matt, Dec 19, 2013
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  4. cosmicbeard

    cosmicbeard Member

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    Many thanks for all the advice gents.
     
    cosmicbeard, Dec 20, 2013
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  5. UVcure

    UVcure Well-Known Member

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    Never used a lot of ardex Dpm Matt, but since reading the data sheet I might have a few jobs for it, didn't know that he held back raising damp, thanks Matt, I didn't have a problem laying on the 78 even though it was sometimes over the 24 hours, as it's hard to lay sections of 160m2 of herringbone blocks in a day,that was two years ago and it's solid,out of the 2000m2 one section go soaking wet and the blocks came up and we replaced the area, but where the blocks didn't get wet I had to kango them off the Dpm, so it certainly works
     
    UVcure, Dec 21, 2013
    #25
  6. SourceWoodFloors

    SourceWoodFloors Member

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    Nice post,.,.i really find it very informational and also get some useful tips about parquet flooring through your post...thank you and keep posting
     
    SourceWoodFloors, Jul 30, 2015
    #26
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