COMMUNITY FORUM

suggi1

08:20PM | 09/27/09
Member Since: 09/03/07
32 lifetime posts
Bvroofing
Could you tell me what to do about black roof stain. Never had it before and a lot of houses seem to have it this year. Luckily we do not have a lot so far. Massachusetts had a very wet and humid spring and summer this year and don't know if that has something to do with it.

I have a handyman that cleans my gutters and puts a layer of tar around the stackpipes in November. (The roof is in good shape but there was a crack in the tar around the stackpipe that got into the attic but since we tar it every year there has been no leaks.

I would prefer something environmentally friendly if possible and hopefully he could do this. I believe he also does some roof repair.

I read on the internet never to power wash your asphalt roof. Is this true and if so how do you apply whatever to clean the asphalt roof shingles.

Thank you.

OddBall

05:41AM | 10/01/09
Member Since: 11/10/06
138 lifetime posts
The staining you`re describing sounds like mildew, it grows under the headlap of each row of shingles. It is in ideal conditions to grow when water is allowed to travel along the headlap. The water enters either through a flashing problem on a wall or chimney or pipe ect. ect., or from the edges. This entry is due to the roofing not being straight or even level.The water travels along the headlap and drains at joints or from under the shingle at places of least resistance such as the space between the self seal strip. When the water exits, it deposits excretions, oil from the shingle, growth. That`s the stain. It is on a mircro scale and you can lighten it with a bleach solution but it is not totally removeable.

Never power wash your roof. Use a SOFT bristle push broom or like me, a 4 inch paint brush. SOFT SOFT bristles only or you`ll scrape off granuals.

There should be NO tar around your pipe. The proper size flange, correctly roofed, with a silicon caulk ring aroud the collar for back-up, will last the life of your roof with no need for tar. Tar is not an extierior flashing. A lead pack joint too close to the roof for a flange or old type packed flange (break it off with 16 ounce hammer) can easily be removed or cut and lowered inside to provide the modern flage style to fit.

This staining almost always happens when there are more than one layer of roofing on your home.

Posting photos` helps guys like me give more accurate proffessional advice. BTW, I don`t know how to post photos` !!
Click_to_reply_button
Inspiration_banner

INSPIRATION GALLERY



Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.

Reply_choose_button

captcha
type the code from the image

Anonymous

Post_new_button or Login_button
Register

For an eclectic table setting or outdoor lighting, try a riff on this project from The SITS Girls blog—converting mason ja... It turns out that many bath and kitchen cleansers contain chemicals that are dangerous to the skin and eyes, and often pro... So often we paint tiny nooks white to make them appear larger, but opting for a dark, dramatic wall color like this one—Be... Chocolate-colored walls and large window frames allow the exposed wood beams to take center stage in this small screened p... If you're not crazy about the idea of commingling plants and pool, this modern variation may be more to your liking. The s... Yes, a freestanding garage can become its own tiny house. Artist Michelle de la Vega has all the comforts of a modern resi... There’s nothing like a new set of cabinet hardware to refresh a room. The possibilities are endless: Go modern, rustic, or... Pursue what's known as the stack effect. To achieve it, open the windows on both the upper and lower floors, and as warm a... Like no other floor type, a checkerboard design works wonders to underscore the retro kitchen theme. Vinyl flooring, ceram... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... When securely fastened to a tree or the ceiling of a porch, a pallet and some cushioning make the ideal place to lounge. V... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... For the cost of a can of exterior paint , you can totally transform your porch. Paint the floor a hue that complements yo... In this urban apartment, a standard-issue patio became a serene and green perch by replacing the typical concrete with gro... If you put the washing machine in the mudroom, you can stop the kids from walking through the house in dirty, grass-staine...
Follow_banner_a
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon
 
webapp1