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    Grout turning mouldy?

    Bathroom Specialists

    Hi. I had porcelain tiles installed 18 months ago. The extractor fan is always on when I shower but I have realised lately that there is some mould that has formed between the grout and in some areas some of the grout is turning orange and some brown. Why is this and what is the best way to remove this without causing any damage to the tiles?

    Asked by Yz on 5th May 2021
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    Best Answer

    Mastercraft Bathrooms

    "Hi its not always an issue with extraction.
    Grout is pigmented cement and fairly rough on the surface when viewed under magnification.
    So when showering and using various shower cleaning products a combination of this and body scum are the causes of grout discolouration and mold if not cleaned properly .
    There are grout sealants which are available to seal once cleaned and totally dry.. ideally should be used by the tiler after grouting and before use."

    Answered on 5th May 2021 - Member since Apr 2020 - report
    Sussex Wetrooms

    "Hi although the extractor is running it is likely that it is not sufficiently powered to remove the moisture from the room.

    There are various products on the market for mildew removal and grout revival, a company call universal sealants will be able to recommend the right product."

    Answered on 5th May 2021 - Member since Jan 2021 - report
    JPC Swimming Pools

    "If you have brown grout appearing it normally means the tiles were stuck to plywood and water has found its way behind the tiles and the wood is now soaking wet and seeping through the grout joints. Sadly they may need to come off and be re tiled"

    Answered on 3rd Jun 2021 - Member since May 2021 - report
    Uk Bivol Construction LTd

    "You need to buy special waterproof insulation that is painted to the tiles and it does not allow stains to appear only then you can imagine This is a must in toilets"

    Answered on 5th Jul 2021 - Member since May 2021 - report

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