Moss on roof


  #1  
Old 08-24-16, 10:01 AM
Geochurchi's Avatar
Member
Thread Starter
Join Date: Nov 2012
Posts: 5,046
Received 159 Upvotes on 145 Posts
Moss on roof

Hi All, what is the best and safest way to remove moss from asphalt single roof?
 
  #2  
Old 08-24-16, 12:26 PM
P
Group Moderator
Join Date: Mar 2003
Location: NC, USA
Posts: 27,083
Received 2,009 Upvotes on 1,801 Posts
I usually use a pressure washer. You have to use some care so you don't damage the roof or slip and fall off but it's relatively easy once you get up there.
 
  #3  
Old 08-24-16, 02:10 PM
M
Forum Topic Moderator
Join Date: Mar 2005
Location: USA - N.E.Tn
Posts: 45,495
Received 800 Upvotes on 703 Posts
You have to be extra careful using a pressure washer on asphalt shingles! While it's easy to clean the roof that way it's also easy to shorten the remaining life of the shingles. Use as little pressure as possible!
 
  #4  
Old 08-24-16, 02:13 PM
B
Member
Join Date: Oct 2008
Location: New England
Posts: 9,460
Received 47 Upvotes on 43 Posts
My concern would be, how much of the granular material will go with the moss. I've mostly dealt with lichen and when I rub then off they take most of the granules with them.

If you power wash as Pilot suggested, use minimal pressure and wash from top down.

How old is the roof?

Bud
 
  #5  
Old 08-25-16, 12:30 PM
S
Member
Join Date: Nov 2014
Location: USA
Posts: 248
Received 0 Upvotes on 0 Posts
Regarding @Bud9051's advice to wash from the top down, I'd only do that if I could wash the entire roof from the top. I wouldn't want to walk on a wet roof.

If you're able to clean off the moss, then it's time to think about preventing it from returning. I had some luck with a zinc strip that the roofers installed at the ridge. It seems to have lost some effectiveness though.
We also had a tree trimmed to get more sunlight on the roof.

I've been trying to convince my wife that we should get a metal roof, but she's not interested.

Good luck.
 
  #6  
Old 08-27-16, 05:50 AM
Geochurchi's Avatar
Member
Thread Starter
Join Date: Nov 2012
Posts: 5,046
Received 159 Upvotes on 145 Posts
Update, because there were only a few spots on the roof , I could reach them from a ladder ,I used a stif scrub brush and got it all off,to many trees to trim in this location.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: