COMMUNITY FORUM

bill5825

02:41PM | 09/22/04
Member Since: 09/21/04
7 lifetime posts
Bvroofing
We currently live in a two story home with a 9/12 pitch roof. There is a 1/2 " plywood deck covered by 15lb paper and 25 year shingles. I have 2 questions.

1. We are currently tearing off the old shingles and replacing with 50 year shingles. The contractor is not tearing off the old 15 lb paper and is covering with another layer of 15 lb paper. He tells us it is not necessary to tear off the old.

What do you think?

2. We are also installing ridge vent and tearing out the old "turtle head" vents. There is also one gable end vent at the peak. The contractor also advises that soffit or eave vents are in order. We did not have them before. What he says does make some sense.

Do we need the other vents in addition to the ridge vent?

tomh

08:06AM | 09/23/04
Member Since: 07/01/03
558 lifetime posts
Not removing the old felts will not harm the new roof, but makes inspection of the deck sheating impossible. I guess the thinking here is, if I can walk on it, its in good condition. Personally, I never had the talent to do a roof tear-off and not pull up the felt at the same time. Seems like a minor issue.

Soffit vents are important because without them the roof ventilation system does not work. Roof ventilation, particularly ridge vents, is a convective ventilation system. As the attic heats up relative to outside air, the heat expands the air causing it to rise. It will escape through the ridge IF there is make up air being supplied, otherwise, it is stagnant. Providing this make-up air at the soffit allows the fresh air to sweep along the underside of the roof keeping it cooler and at ambient humidity levels. This prevents condensation in winter and heat build up in summer.

Grumpy

04:58AM | 09/26/04
Member Since: 06/14/04
26 lifetime posts
If you are installing a ridge vent you NEED soffit vents. You also need to remove all other ventilation, including the gable vents. Ventilation is a science, believe it or not. Over ventilating is as bad as under ventilating because it will short circuit it's self.

As far as the felt paper goes, that's just wrong. DO it right or don't do it at all. I see no good reason to not remove the existing felt paper unless he is re-using it and if he is reusing it he is cutting corners.

I would have assumed that the written proposal your eceived from your roofer says something like:

"We will tear off the entire existing roof down to the roof deck.

We will replace any rotten wood as necessary, any rotten wood replacement will carry an additional charge."

To summarize, I think your roofer is right about the ventilation and wrong about the felt.

-Grumpy

www.ReliableAmerican.us www.RoofersCentral.com
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

Painting your front door a striking color is risky, but it will really grab attention. Picking the right shade (and finish... 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... For windows, doors, and mirrors that could use a little definition, the Naples Etched Glass Border adds a decorative flora... 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
 
webapp2