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  1. #1
    Roy flint
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    Default Exterior tiling on uneven existing concrete

    Can anyone recommend a deep bed leveling compound or adhesive for an old uneven conrete floor, need to make up to 25/30 mm to achieve fall away from house.
    Thanks

  2. #2
    DHTiling
    Guest

    Default Re: Exterior tiling on uneven existing concrete

    Hello Roy and welcome...

    Not all levellers are suitable for external use...

    These are a few options that are available use...


    Fast-setting cement based levelling compound for internal and external use from 3 to 20 mm thick.
    Applications:
    Internal and external levelling compound for all normal supports used in building provided they are clean, such as concrete slabs, cement screeds, old ceramic flooring, terrazzo tile, natural stone.
    Apply 3 to 10 mm thick per coat.Coverage
    1,5 kg/m2 per mm of thickness.Packaging
    25 kg bags.






    ARDEX K 301 - Fast Setting Exterior Self-Smoothing Levelling and Resurfacing Compound
    Size (pack): 25kg
    Coverage: Approximately 1.6kg ARDEX K 301 powder/m/ mm, i.e. approximately 7.8m at 2mm thickness per 25kg bag.
    ARDEX K 301 Exterior Self-Smoothing Levelling and Resurfacing Compound is a special fast setting cement-based product designed to smooth and level rough and damaged concrete surfaces in external and internal situations. ARDEX K 301 is a grey powder consisting of special cements, graded aggregates and high quality synthetic resins. When mixed with water, a fluid mortar is produced which sets within 2 hours and can normally be walked on after approximately 2-3 hours at 20C. ARDEX K 301 can be applied from 2mm to 20mm in thickness. The set and hardened ARDEX K 301 is usually ready to receive light wheeled traffic after 48 hours at 20C.

    What tile do you intend to use..?



  3. #3
    Roy flint
    Guest

    Default Re: Exterior tiling on uneven existing concrete

    Thanks for reply. I am using a non slip porcelain tile 300x300.
    Roy

  4. #4
    DHTiling
    Guest

    Default Re: Exterior tiling on uneven existing concrete

    Cheers Roy, was just checking the tile was suitable for exterior use.....they are fine..

    Mapei adhesives are great to use as well...I would use mapeker or keraquick..

  5. #5
    Tilers Forums Arms Member Rob Z's Avatar
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    Default Re: Exterior tiling on uneven existing concrete

    Dave,

    How do you use those SLC's so that the pour ends up with a sloped surface (for drainage)?

    Roy, I'd rather do a mud bed so that the money goes into the tile setter's pocket rather than pay for a lot of SLC.

  6. #6
    DHTiling
    Guest

    Default Re: Exterior tiling on uneven existing concrete

    Quote Originally Posted by Rob Z View Post
    Dave,

    How do you use those SLC's so that the pour ends up with a sloped surface (for drainage)?

    Roy, I'd rather do a mud bed so that the money goes into the tile setter's pocket rather than pay for a lot of SLC.

    They are smoothing compounds Rob and can be treated like screeding , where as you form the falls and it goes from thick to thin , which you can't do with screed/mud jobs, like from 1 inch to 1/16th or summit.

  7. #7
    Tilers Forums Arms Member Rob Z's Avatar
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    Default Re: Exterior tiling on uneven existing concrete

    Dave, sounds good...must be a different class of products than what we have here.

    I'm so used to just getting mud and covering it with a membrane...I didn't know that other stuff was avaialble...maybe it is here?

  8. #8
    DHTiling
    Guest

    Default Re: Exterior tiling on uneven existing concrete

    What can i say rob...times move on from mud jobs....

  9. #9
    Tilers Forums Arms Member Rob Z's Avatar
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    Default Re: Exterior tiling on uneven existing concrete

    Dave, I say anytime the tilesetter can use a bunch of inexpensive sand and cement, and get great results without sacrificing any quality, then it's a good thing. More money in the company for the tilesetters and less to the supply house.

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