Shingles Butted Too Close Together?

itwerx2

Our new reroofing job was done with 30yr. asphalt dimensional shingles. There are lots of shingles that are buckled and bulging. Also several areas of up to about 1/3 of a square do not lay flat. (Work was done 4 months ago). I have been told by another roofer that a lot of this is because the shingles were butted too close together. He also said some of this is because the shingles were either messed up in the packages and/or were not handled properly as they were being installed. Looks bad.

Wondering if any roof doctors here think this diagnosis fits the symptoms? Thanks.

dougger222

Do you live in the North and was your roofing installed on a cold day? What brand of shingles did you go with?

It's very common in the Winter when cold for laminate shingles to curl from being stacked from the factory on the pallets. When Certainteed went from 4 bundle per square Landmarks to 3 bundles per square they went from 12 sq pallets to 16 sq pallets and when you stack two together you have an extra 8 sq's.
The only correct way to install laminates in the Winter is to take your time and lay them flat and use a minumal of 6 nails per shingles on bent ones to insure they won't move around when warmed.

One way to fix it is to replace the worse shingles with slightly cut ones but be carefull not to cut into the shingle udner the bad ones.

itwerx2

Yes, north but not too far north. Installation was done on 2 days that were 61 degrees and sunny. But the shingles were up on the ridge of the roof for a full week with cold nights.

Shingles are Tamko. Tamko rep. has seen the work. He said shingles are not defective but thought some bundles may have been dropped on corners. As for the bulging and buckling he said it was workmanship. Looked to me like the installers were working way too fast.



Overall, this installation failed the city building department's inspection due to other problems. with sealing and drip edge. Situation is yet to be resolved.
Thanks.

AaronB.

Sealing the drip edge? No sealing of a drip edge is necessary, unless youre in a hurrricane zone.

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Same Old

I believe he wrote "sealing and drip edge"

itwerx2

Yes, the inspection failed because a drip edge was done wrong and also because the shingles were not sealed. I think the sealing issue was both the shingles themselves and several 1 to 2 inch gaps and humps that are open between the edge of the shingles and the top of the fascia at the rakes. Not a real pretty sight.

reveivl

You said the shingles were stored "up on the ridge of the roof for a full week with cold nights". If they were actually over the ridge and not lying flat this will have caused some of the problem with them not laying flat now. If they have a 'hump' in them when you're laying them it is very easy to get them too tight together and they will never lay down.

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Same Old

I don't know what you mean by "sealing" the shingles.

itwerx2

Yes, the shingle bundles were on the ridge itself. They were not laying flat.

itwerx2

Sealing the shingles = the self-sealing strip has not activated. It still hasn't in some south facing areas and everything on the north side (after 4 months) . I am in an area which is subject to pretty high winds regularly. Inspector also didn't like the gaps at the rake edges.

AaronB.

my bad.

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Ed the Roofer

One other potential factor to consider.

Was the buckling evident immediately upon the installation or did it seemingly occur several weeks after completion?

The reason I ask is two-fold. If not enough attic ventilation was provided for, the release of additional moisture could be occuring at he vertical joint seams of the decking. (By the way, or you 100 % sure that the decking is not buckling from expansion and cotraction from beng butted too closely together or from getting wet during or prior to the installation of the shingles?)

I have personally been the witness on a situation where the felt paper buckled "after" the installation of the shingles. the shingles were installed in December in the upper 40 degrees and sunny, and laid flat until spring time and 70 degrees. The buckiling was only observed on the 4 foot vertical seams of the newly installed osb on top of skip sheathing. The shingle had to be removed from the seam areas, cut the newly formed buckles out from the felt paper. Duct tate applied over the decking seams to mitigate heat and moisture transfer. Then solidly fasten down new felt over the duct tape and then reinstall the shingles.

No problem again after 9 years so far.

Lack of the sealant being activated could also have something to do with wind blown particulate under the shingles during heavy winds during and immediately after the shingle installation, which would have diminished the adhesive properties of the sealant now being contaminated by dust or whatever.

Ed

itwerx2

Ed- thanks again for all the knowledge. To answer your question, the buckling, "fishmouths" and curling, were there at the time of installation.

Actually, my wife came in the house while they were working and said to me, "Why are the shingles sticking up."

Weather conditions were dry during the 2 day tearoff and installation process.

itwerx2

Here is a picture of an area of our NEW roof that I am referring to in this thread.

Ed the Roofer

From the photo, it would seem as if the "butted too closely" theory is more applicable.

I have seen colder weather installations like this settle down and seal after an entire summer of heat to allow them to flatten out again though.

Ed

itwerx2

Yes, but the bottom line question is : would you accept work like this on YOUR home- or would you want it done over (especially if the home is to be put up for sale soon)?

AaronB.

I have seen this phenomenon when they are butted and then adjusted then nailed cuz the installer sucked. Looks like the 8 dollar an hour guy put those on.

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woodmagman

Check to see if they are running in a straight line, if the roofer has followed the fasica and not snapped a line the square edge of the shingle is unable to lay flat. It will catch on every bottom corner if the line bellies down and open on the bottom if the line bellies up. Yours appear to be belly down.

Travis

Tamko shingles are JUNK. Period. I wouldn't put tamko on my roof if you paid me. ELK, GAF maybe OC, but not Tamko.

AaronB.

whats wrong with Tamko shingles?

__________________
http://www.roseroofing.net/
Seamless Industrial and Commercial Roofing Systems, Residential Repair. For Those That Demand Quality!
Free roof inspections within 12 miles of our locale.