| Author |
Message |
Staffer
| | Posted on Saturday, February 26, 2000 - 7:53 am: | |
Storm Pro:
Among these other insightful possibilities to your described problem, in my experience, 4 times out of ten when I've seen this condition, it was due to the roll roofing being installed over a worn shingle roof. As the the shingle roof continues to age it curls at the tabs creating the surface condition you describe. |
R.D. Hood
| | Posted on Friday, February 25, 2000 - 11:13 pm: | |
Stormpro,
The only way to determine which felt was used is to have a sample. The 15# Non-Perforated and the 30# will not show light when held up to the sun. The 15# Perforated, (used in Hot applications) will show minute pin holes every 2" in all directions. The down side of taking the sample is that you may now own the roof, or at the minimum a repair to the area.
This material is incorrect for a base felt under a 90# single ply or a 90# SIS installation.
Based on your description of the appearance , i would be hard pressed to say that this is wind related damage. BUT, im not there.
If the carrier is willing have a roofing expert examine the loss and then make the call. Good Luck |
GNewman
| | Posted on Friday, February 25, 2000 - 10:23 pm: | |
It would be highly unlikley that the problem has anything to do with storm damage .The problem is more than likely one of two things . If the 90# was installed over felt that was not pulled tight and nailed off good the felt tends to wrinkle which will be telegraphed into the layer of roofing above . Be it 90# , modified or BUR . The second problem could be that it was installed while the tempature was below 40 degrees and the roofer did not roll the material out letting it warm up and relax . If any type of rolled roofing is installed while cold it will warm up and expand (cold contracts ,heat expands )causing the wrinkles and buckles mentioned . I have spoken to several manufactures reps and this was the explanation I recieved each time . Hope this helps out with your question . |
storm pro
| | Posted on Friday, February 25, 2000 - 7:19 pm: | |
Thank you all for your valuable input.
As far as a digital image goes, I am sorry to report that I sold my old HP digital camera and I am currently using good old 35mm. (Plan on a new SONY when cash flow stabilizes a little)
I'll tell you what though, I will try to get a scan of the photo and will post if I can.
The house in question is located in NY - about 40 miles north of NYC. The house is located in a rural area and I feel confident that sub-grade materials were NOT used here.
It looks like two layers, so this may be SIS as you say Dave. I like the term "mole runs" by the way.
Mr Hood-How can I tell what type of felt was used?
Again thanks to all of the pros out there! |
cfdeaton
| | Posted on Friday, February 25, 2000 - 9:40 am: | |
Have you given consideration to idea that the 90# may have been a "second" or reject product to begin with. Application of "seconds" occurs in low value dwelling located in an area where roofing plants are located. |
R.D. Hood
| | Posted on Friday, February 25, 2000 - 1:03 am: | |
Forgot the most important item.
The underlayment or base felt, if its 15# it must be NON-perforated, as 30# is. And if that were applied and allowed to sit overnight , its very possible that the 90# was installed over a wet roof.
This would be most likely if the installation was hot mopped in place. All in all it would appear to be poor workmanship, barring any defective materials. |
Dave
| | Posted on Friday, February 25, 2000 - 12:57 am: | |
Great comments from all.
Mine will be to ascertain is it 90# roll roofing or SIS (Seventeen Inch Selvage) material, i.e. two layers?
These conditions are reffered to in the roofing trade as "mole runs" on built up installations, and are caused primarly by moisture in the product when applied with a Hot asphalt application.
Some of the other reasons could be "out of round" as was suggested. Latent moisture in the product, poor substrate conditions, (containing moisture).
A full description and a good digital photo may help to enlighten all, and allow for each to make a more thorough commentary. As always there is NO substitue for seeing the loss with your own eyeball. |
jim
| | Posted on Thursday, February 24, 2000 - 11:45 pm: | |
Sounds like it may have been installed just before the wind blew, it didn't have time to properly set up. Wind may have blew it loose and than it was put back and than setup. |
MKDCO
| | Posted on Thursday, February 24, 2000 - 11:36 pm: | |
StormPro, What part of the country are we talking about?
If it was here in West Texas where gobs of this type material is used, I'd be inclined to say that the orginal roll of material was not maintained in a round roll by having the material standing in storage. If it has been allowed to lay down and had other rolls places on top and there is sufficient sunlight hitting it over a period of time, the roll will flatten down thus causeing an insulation problem when used. This oblong roll will not lay flat when applied to the structure to be covered thus making humps on the finished surface. We find this problem here in West Texas frequently. It may be that the roofing company does not feel that the insured will ever get up on top of their residence and find such craftmanship or the lack of. Mostly this is found on covered porches or carports. Very seldom do you find 90# used on main roofs of homes. Sometimes it is used on flat commercial buildings but it is hop mopped on. That's my experiences here in West Texas on 90#. |
Roy Cupps
| | Posted on Thursday, February 24, 2000 - 11:32 pm: | |
 Yes you can add a photo. I agree it would be good place for a photo. To add a photo to your comments use the following code, just add a "\" in front of image without the quotes.
image{Roll Roofing}
When you post the message you will get asked for the location of the image on your hard drive once selected the photo will be uploaded to the CADO site and be part of your message. |
Jim Flynt
| | Posted on Thursday, February 24, 2000 - 10:12 pm: | |
Hey, this would be the perfect place for Storm Pro to take a digital photo of the roll roofing condition and then post it here along with his question.
Hey Roy, can we do that here? Help! We all need to know for future reference.
Great question Storm Pro and some good feedback as well. Keep 'em coming! |
vince Tabor
| | Posted on Thursday, February 24, 2000 - 9:21 pm: | |
Storm:
You have a lot of moisture being shed from the three tab portion to the lower pitched roof, this lower pitch evaporates at a much slower rate on the 90 lb rolled roofing material. We don't know what type of decking you have under the 90 lb. Do you have 15 or 30 lb roof felt under the 90 lb? If the felt was not stored properly or allowed to become wet , or if the 90 lb. was allowed to get wet, either scenerio could cause the product to curl and "pucker" after drying out..once the roof application was completed.
A few roofers use plastic asphalt cement instead of plastic lap cement when applying 90 lb to the substrate. This asphalt seal will not hold and allow water to penetrate the felt and/or decking surface below...causing the top layer (90lb.) to gather and not lay flat on the deck. Improper ventilation in the attic can also create moisture under 90 lb.but this condition is rare and gable vents easily prevent this problem. |
Ghostbuster
| | Posted on Thursday, February 24, 2000 - 8:25 pm: | |
Oops! Sorry bout that, meant to say Storm pro. |
Ghostbuster
| | Posted on Thursday, February 24, 2000 - 8:24 pm: | |
Stormcrow,
My guess is the roll roofing was not pulled tight during installation and possibly not secured to the decking adequately, thus allowing the sun to heat and relax the roll and result in the wrinkling effect. I could be wrong, so lets have some more guessing out there guys. |
Jess Drury
| | Posted on Thursday, February 24, 2000 - 7:06 pm: | |
well my experiences with 90lb rolled roofing is that it is the cheapest stuff on the market . Its almost impossible to get it to lay down properly.its probably poor installation. I would suggest using a modified roofing product.Insted of fiberglass backing ,it has a rubber backing it comes in torch down or glue down .torch down is the best!Wish Icould of been better help to you! Appleton Roofing and Cont, Jess Drury |
storm pro
| | Posted on Thursday, February 24, 2000 - 6:49 pm: | |
I looked at a roofing problem today and was hoping to get some opinions on the cause.
This is a one story home with a simple gable roof with a low pitch. The peak portion of the roof has 3 tab shingles on it and roll roofing on the lower pitched sections. It appears that the roof is of various ages in different sections.
What appears to be the oldest section of the roll roof is worn out as the aggregate is worn off of along the edges and seams of the rolls. The 3 tab portion of the roof is in fair condition with no evidence of missing shingles.
Another section of the roll roof (here's my question) has what can best be described as rolls all over the roof. Let me describe it another way.
If you had a blanket on a bed that was not laying flat that had "lumps" or "wrinkles" all over the place that is what this roof looked like. If you stepped on one of those lumps it would go down and sort of go flat to the decking and then pop back out to the way it was. The roll roofing is plyable and not "crispy" or "crunchy". Some parts of this section of the roof also have "pock marks" which I think is long term wear.
Does anyone have a definitive answer as to what is causing this "rolling" condition.
The PH is claiming hurricane damage (PH was already denied flood loss damage on same claim)and of course this is out of the question (sorry Mr. Roofer who stated it was wind damage) I would like to be able to tell Mr PH and the carrier exactly what is causing this problem and hey where else does one go for informed discussions of this sort (CADO)?
Some of the possible causes I was thinking of are:
1.) improper installation
2.) inadequate ventilation
3.) plain old wear and tear
Your thoughts on this topic will be greatly appreciated and will shape my final report |
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