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

Anonymous

Post_new_button or Login_button
Register

Let it snow by stringing your tree with sparkly snowflakes — the kind that will never melt. LEDs on string lights burn mu... Filling an underutilized area beneath the stairs is a smart way to save space. Doing so with a stash of wood, however, is ... The Audubon Society inspired wallpaper in this Adirondack-styled entryway will get you in the outdoor mood. Grab your coat... Chalkboard paint opens up endless possibilities for customizing your dresser time and time again. Use chalk to label the c... A fireplace in the bathroom creates the ultimate setting for relaxation. Homeowners often choose electric or gas over wood... This roomy boot tray made from punched metal stands up to all the elements. Station it in your mudroom or at your back doo... There’s nothing like a new set of cabinet hardware to refresh a room. The possibilities are endless: Go modern, rustic, or... FLOR carpet tiles are a simple and affordable way to customize a floor covering for any space. You can make anything from ... Chalkboard paint features prominently in this elegant yet unpretentious headboard design. Add a new message daily to reflec... Salvaged boards in varying widths and colors make up the dramatic accent wall in this attic space. The high-gloss white of... The indecisive homeowner need not fret over choosing one (or even two) cabinet colors. The kitchen cabinets in this artist... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... Simple and striking, a couple of pieces of "lovingly used" furniture creates a special kind of charm. A weathered chair fo... First dress up your metal shelves with a coat of paint in an accent color that complements your kitchen decor. Then arrang... The vibrant green of Granny Smith apples make a beautifully natural alternative to the traditional evergreen wreath. Brigh...
Follow_banner_a
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon