» Asphalt roof shingles, 2nd layer questions…

Post new topic Reply to topic               Roofing/Construction Questions
Author Message
  Post subject: Asphalt roof shingles, 2nd layer questions…
PostPosted: Mon Mar 17, 2008 10:49 pm 
Offline

Joined: Mon Mar 17, 2008 10:52 am
Posts: 8
Images: 4
Location: NEW YORK
Post liked: 0 time
Liked posts: 0 time
I need help ending a disagreement between my spouse & I about redoing the asphalt roof shingles on our 20 yr old house. Currently we have original builder’s shingle, the roof is getting older but has no leaks or missing shingles.

I am of the belief that, unless something is leaking or there are other roof issues, usually contractors will place a 2nd layer of asphalt shingles on top of the 1st. That only when a 3rd layer needs to be put on that the 2 previous layers need be removed. I am thinking of the possibility of un-needed work not to mention the added expense, especially if it's is compleatly un needed, that money could be used to cap the sophit in vinyl and get new gutters.

My spouse believes that the original roof shingles should be scraped off, carted away regardless of the expense, & the new shingles installed without shingles underneath. Is set on this being the proper method.

Again, 20 yr old L-shaped ranch style home, original plain asphalt shingles, no roof damage.

Opinions (Pros & Cons) needed to end the debate so we can finally get the roofers here and we aren’t bickering in front of the poor guys!

Simply signed:
JMKM in a dispute :roll:


Top
 Profile Personal album  
 
  Post subject:
PostPosted: Mon Mar 17, 2008 11:29 pm 
Offline
User avatar

Joined: Mon Jan 09, 2006 3:59 am
Posts: 1812
Location: newark, ny
Post liked: 1 time
Liked posts: 9 times
99% of roofers nationwide like to tear off. The reasons being are check the wood for damage, install ice & water shield (which you currently do not have and is NY building code), generally 2nd layer doesnt last as long as it should, extra added weight to the frame of your house, replacing flashings. In NY it has been common over the years to do this practice, but it is becoming frowned upon by the industry.

If you want it done right....tear it off. spend the little extra now to save yourself alot later.

where are you in NY?


Top
 Profile  
 
  Post subject: tThanks
PostPosted: Mon Mar 17, 2008 11:42 pm 
Offline

Joined: Mon Mar 17, 2008 10:52 am
Posts: 8
Images: 4
Location: NEW YORK
Post liked: 0 time
Liked posts: 0 time
I'm Down state, way off to the east.

Is it also true that darker roofs dont last as long?

If I end up having the roof stripped down, and it done the correct up-to-code way does that mean all the flashings where the L meets on the roof and the chimney need replacement? What about drain pipe vents etc?

It's a big roof, being a ranch, obviously I want better shingles, we dont want to think about another roof till we are old and grey and selling the house

JMKM


Top
 Profile Personal album  
 
  Post subject:
PostPosted: Tue Mar 18, 2008 12:52 am 
Offline

Joined: Mon Jan 09, 2006 3:47 am
Posts: 2110
Location: tampa bay florida U.S.
Post liked: 0 time
Liked posts: 15 times
if you were down here in florida ide say
put a second layer on. we do it all the time down here.
but the guys are rite when your deali with ice build
up. your gonna want your bottom edge to have the ice
and water sheild put on.

so the wife wins,
but only because you live up north.


gweedo.


Top
 Profile  
 
  Post subject:
PostPosted: Tue Mar 18, 2008 12:56 am 
Offline
User avatar

Joined: Sat Jul 28, 2007 7:10 pm
Posts: 2718
Location: N. Michigan
Post liked: 288 times
Liked posts: 261 times
:D

_________________
I don't need no freakin' signature, I Am Roofer.


Top
 Profile  
 
  Post subject:
PostPosted: Tue Mar 18, 2008 1:42 am 
Offline
User avatar

Joined: Mon Jan 09, 2006 3:59 am
Posts: 1812
Location: newark, ny
Post liked: 1 time
Liked posts: 9 times
new roof means "new roof". this means replace "ALL" flashing details. what town downstate?


Top
 Profile  
 
  Post subject:
PostPosted: Tue Mar 18, 2008 2:38 am 
Offline
User avatar

Joined: Fri Mar 02, 2007 3:50 pm
Posts: 1398
Location: Westchester, N.Y.
Post liked: 11 times
Liked posts: 159 times
I'm Down state, way off to the east.

I'm about as South East NY as it gets.



Is it also true that darker roofs don't last as long?

Since a light and dark shingle of the same type come with exactly the same warranty...I'd say that is false info.



If I end up having the roof stripped down, and it done the correct up-to-code way does that mean all the flashings where the L meets on the roof and the chimney need replacement? What about drain pipe vents etc?

Depends on what you had there before, what condition it is in and what (if any) extended warranty you choose. If the flashing is in good condition and deemed to last the life of your new roof then I see no reason to replace it. That is rarely the case though.



It's a big roof, being a ranch, obviously I want better shingles, we don't want to think about another roof till we are old and grey and selling the house


Ok, in that case you have 30yr, 40yr and 50yr ("limited lifetime" = 50yr) shingles. You want 50yr shingles (I like Certainteed TL), all copper flashings and a full tear to bare wood.

You can re-cover (2nd-3rd layer) but it cuts the life of the roof, often doesn't look great and for things like roof protrusions/walls instead of using flashing you are butting the new shingles to the wall/etc. and caulking the gap, which is crap. There are other issues that come into play like double the weight on your roof...not being able to use ice and water barrier...not knowing if the flashing is compromised... You get the picture.

Bottom line:
Adding another layer is great if you want to sell your house I guess but you sound like you're settled and ready to protect your investment. Bite the bullet and do a full tear and replace and have peace of mind. Keep in mind you will get what you pay for in this business.

_________________
"Democracy is the theory that the common people know what they want, and deserve to get it good and hard." ~H. L. Mencken


Top
 Profile  
 
  Post subject:
PostPosted: Tue Mar 18, 2008 4:06 am 
Offline

Joined: Tue Mar 18, 2008 3:40 am
Posts: 3
Post liked: 0 time
Liked posts: 0 time
As an installer, I would never put new shingles on top of old ones. Mainly because I won't give it the same warranty I would on a rip. As mentioned above, you should have at least 3 ft of ice sheild. Secondly, shingles on top of shingles are more prone to "blow-offs". Asthetically, ripping the existing shingles will give you a more appealing look. A second layer will not sit and look as flat.
The bottom line is a new roof costs alot either way. You might as well spend the extra money and get it done right.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 8 posts ] 


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  


Disclaimer

The information and advice provided by the community are for informational purposes only. The site owner and users assume no liability for any errors or misunderstanding in the content, or for any actions taken in reliance thereon. Before making any decisions or taking any action, it is recommended that you consult with a local roofing professional or building official. Roofing can be hazardous. Make sure you protect yourself by using all the appropriate safety procedures.