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

Deep blue grays like the shade shown in this example "have a nautical, serene feeling," says Amy Hendel, designer for Hend... Built on a rocky island in the Drina River, near the town of Bajina Basta, Serbia, this wooden house was cobbled together ... Large steel-framed windows flood the interior of this remodeled Michigan barn with daylight. The owners hired Northworks A... Edging formed with upside-down wine bottles is a refreshing change. Cleverly and artistically involving recycled materials... A Washington State couple called on BC&J Architects to transform their 400-square-foot boathouse into a hub for family bea... Similar to the elevated utensil concept, hanging your pots and pans from a ceiling-mounted rack keeps them nearby and easy... Few projects are more fun than upcycling a vintage piece in a surprising way. Outfitted with a sink and a delicately tiled... The thyme growing between these stepping stones adds a heady fragrance to strolls along this lush, low-maintenance garden ... Decoupage is an easy way to add any paper design to your switch plate, whether it is wallpaper, scrapbook paper, book page... 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... Reluctant to throw away any of those unidentified keys in your junk drawer? Hang them from a few chains attached to a simp... A stripped-down model, sans screened porch, starts out at $79,000. Add the porch, a heated floor for the bath, and all the... Salvaged boards in varying widths and colors make up the dramatic accent wall in this attic space. The high-gloss white of... This garden shed has been decked out to the nines. Designer Orla Kiely created the intimate home for a flower trade show, ...
Follow_banner_a
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon
 
webapp1