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    Streaky black stains on roof


    How do you get rid of black stains that are streaked along a roof? Is this an easy issue to solve DIY or am I best hiring a professional? Are there any products in particular that I should use? Cheers in advance.

    Asked by Michael on 5th Jan 2021
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    Best Answer

    All seasons roofing

    "Hi Michael the only thing you can really do with this is pressure clean the roof witch seems a bit drastic for a few stains I wouldn’t worry about it if I was being honest it won’t cause any problems

    Hope this answers your question"

    Answered on 5th Jan 2021 - Member since Nov 2020 - report
    Roofsure uk roofing and building

    "When you say black stains straight along our roof do you mean inside or outside if it’s inside then obviously it’s a leak and could be water travelling along Rafters but also also it’s hard to give my opinion as I don’t know the roof in question but I’m happy to take a look and try find the issue


    Answered on 5th Jan 2021 - Member since Dec 2020 - report
    Supreme No1 roofing

    "Costic soda in warm water will resolve it only half a cap full and wear gloves."

    Answered on 5th Jan 2021 - Member since Sep 2019 - report
    Gold Seal Roofing

    "Either chemical clean or power wash.
    Best to get a professional.

    Hope this helps.


    Answered on 18th Mar 2021 - Member since May 2019 - report
    Gw property maintenance

    "Sodium hypochlorite should do the job leave it on for more than 30 minutes then was off with hose"

    Answered on 6th Feb 2021 - Member since Feb 2021 - report
    S blenkiron roofing

    "If it is black, that normally indicates to a mould build up this is normally cause internal, best advice is to buy a thermo meter this measures the temp and humidity in roof then you can act on it buy creatining ventilation etc opening windows and doors to allow air flow"

    Answered on 10th Jan 2021 - Member since Nov 2020 - report
    Global roofing

    "If its internal black stains mean condensation you need to vent the roof brown stains roof leak"

    Answered on 15th Jan 2021 - Member since May 2019 - report

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