Streaky black stains on roof

Question

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.

Steven · Accepted Answer

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

John Sam · Answer

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 

John

William · Answer

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

Jamie · Answer

Typically, in cleaning black streaks from an asphalt shingle roof, a mixture of water, bleach, and trisodium phosphate (TSP) is needed. Keep in mind that you may need to protect your plants under your roof since this mixture can damage them.

Stewart · Answer

Either chemical clean or power wash.
Best to get a professional. 

Hope this helps. 

Stewart

George · Answer

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

Shawn · Answer

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

William · Answer

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

Streaky black stains on roof

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