How I remove black stains and streaks from my roof? - Cleaning Talk - Professional Cleaning and Restoration Forum
 
Thread Tools Display Modes
post #1 of Old 08-15-2019, 10:32 AM Thread Starter
Junior Member
 
Join Date: Mar 2017
Posts: 22
How I remove black stains and streaks from my roof?

How I remove black stains and streaks from my roof?
liezljayne is offline  
Sponsored Links
Advertisement
 
post #2 of Old 08-18-2019, 10:57 PM
Junior Member
 
thefundu's Avatar
 
Join Date: Aug 2017
Posts: 22
Use a soft cloth and rub it. It will not remove completely but will lighten it a lot.
thefundu is offline  
post #3 of Old 08-23-2019, 01:44 PM Thread Starter
Junior Member
 
Join Date: Mar 2017
Posts: 22
Itís best to clean your roof on a cloudy day to prevent the cleaner from evaporating too quickly. If you know the manufacturer of your shingles, contact them or check their website for specific recommendations on cleaning. When using a product made for cleaning roofs or oxygen bleach, follow the directions on the container.
While the recipe for cleaning a roof with bleach can vary, the basic formula is:
  • 1 quart bleach (6% sodium hypochlorite)
  • 1 gallon water
  • 1/4 cup TSP (trisodium phosphate) or other heavy duty cleaner (donít use a cleaner that contains ammonia or is not recommended for mixing with bleach, as it can result in poisonous chlorine gas)
Pour the ingredients into a pump type garden sprayer, mix well, and spray.
After wetting down the roof with the solution, allow it to remain on the roof for about 15 minutes before rinsing off with a hose.
Prevention

To keep algae from coming back once your roof is clean, install a strip of copper or zinc coated sheet metal along each side of the roof just below the ridge. To be effective, 2Ē- 4Ē of metal should be visible on the roof.
While copper is more toxic to algae, galvanized sheet metal is much less expensive. Both copper and galvanized metal are available in rolls of various widths and thickness both online and from local metal suppliers. You can also purchase zinc strips specifically made to eliminate roof algae from Z stop.
Narrow strips of sheet metal can be attached directly to your roof using roofing nails or screws with a rubber washer. For wider pieces of sheet metal, loosen the self-sealing tabs on the top row of shingles with a putty knife, slip part of the sheet metal under them, and nail it in place under the shingles with roofing nails.
liezljayne is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Cleaning Talk - Professional Cleaning and Restoration Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome