Metric Asphalt Shingles??

[Kestas]

Originally Posted By: sleddriver
Originally Posted By: Kestas
Ditto to andy's remark about the new roof lasting longer. I had to replace my roof not because the top layer was in sad shape, but because the two layers underneath were crumbling and allowing water to rot the wood at the edges.

One, I'd never put new shingles over two layers much less layers that were crumbling! That's just dumb, IMHO. I'll bet prying off 3 layers of shingles was fun. . . .

I did it myself... solo. Besides saving money, I had a good workout that summer, did a lot of stuff 'along the way', and the satisfaction of doing a job right.

 

[supton]

On my roof I had it stripped, despite only being one layer. It was a good thing too, as they found at least two leaks that I wasn't aware of, and one of them had gone to mold! [Am hoping that the layer of snow and ice shield I had laid down will also help extend the life of this roof.]

For myself I went shingle, instead of the metal roof that I'd prefer in my New England climate. Two reasons: first, if I had the money I'd put on an addition; and I'm not sure how easy it'd be to rework that metal. Two, I've got kids running around; and I wouldn't care for all the snow to come off at once while they're running around.

If I get twenty years out of the roof (thirty year shingles) I'll be happy. Maybe at that time I'll go metal. [And I'm not sure that metal is "forever", as forever is strongly impacted by how well it was done in the first place. Could be false savings if done badly--and not being a roofer, I wouldn't know the difference.]

 

[Samilcar]

Originally Posted By: L_Sludger
I don't think that Spanish tiles would be quite suitable in the cold, rainy, snowy parts of the world - right? Wouldn't it be problematic with snow and ice?

My grandparents spent 50 years living in a house in northern Missouri that had a Spanish tile roof. Never had any problems with snow or ice (or anything else).

 

[bluestream]

Originally Posted By: L_Sludger
The closest thing to "Permanent Roof" I found on Google search was Spanish tiles on the roof of a house.

I don't think that Spanish tiles would be quite suitable in the cold, rainy, snowy parts of the world - right? Wouldn't it be problematic with snow and ice?


Tile roofs are great in snow and ice, Just pricey. There must be 2 dozen other permanent roofs on the market. Steel being just one.

 

[65cuda]

Be sure to check the coverage on a metal roof. With my insurance if it is beat up by hail it doesn't matter as long as it doesn't leak. I looked it up again and now it says a cosmetic damage waiver is required for the premium discount.

http://www.statefarm.com/_pdf/nationwide.pdf

 

[Kestas]

I've seen Spanish tiles in Canada and northern Europe.

 

[sleddriver]

Originally Posted By: 65cuda
Around here we can put a new roof over one layer of shingles by code. If you are planning or replacing the whole roof you might consider buying class 4 impact resistant shingles. The insurance company I have knocks about a 1/3 off the homeowners ins. for it and it can transfer the warranty and savings if you sell. In my case the payback for the increased cost was a little over 3 years. After that it is free money. I think they usually have a 40 to I believe up to 50 shingles.

I've contacted the insurance co. to see what shingles would get me a discount. Also asked if I'll still be granted the discount if I do the work. Due to the steady increase in oil over the past 4 yrs. shingle prices have gone sky high. Up 40% in some cases. I hadn't considered them for a lay-over not only due to their cost, but weight. Also, the class 4 impact warranty is void in some if layed over.

When it stops raining, I'll take some measurements and see if it's possible to make this work. I did discover that HD carries a GAF 12x36 3T shingle. It doesn't have the algae resistance I was looking for, but I could add a zinc strip up top to compensate. It's also a regular stock item for them compared to the distributer I called. Interesting that. . .

 

[Kestas]

A timely posting for sleddriver, unless he started this linked thread, which I think he did.

http://www.roofing.com/forum/integrating-new-shingles-with-old-metal-flashing-q-s-t12388.html

 

[sleddriver]

Yep..that was me. Been doing more research. I need to do a few tests/measurements, but I'm due for another round of rain Thurs - Fri. Good thing I got her all dried in in-time! Desperately need the rain though

 

[sleddriver]

Went through about a week of rain, then more that just stopped yesterday. I managed to get all the valley's P&S'd, but no metal valley yet. 30# felted it, then covered with a tarp. Everything stayed mostly dry. It's been partly cloudy, 85°F today with no rain in the forecast for the next 5 days.

I layed out some of the 13-1/4" x 38-5/8" shingles over the old 12 x 36 and took some measurements. The new ones have a 5-5/8" exposure vs. 5" for the older ones. When you slide down the new ones to meet the 5" exposure of the old ones, you no longer have a 100% contact between the adnesive and the shingle surface. Instead, there is a gap about 1/8" and adhesive contact drops to around 50%. I'm guessing this is why CT doesn't recommend metric over english.

When I called CT 'tech help' for some further info. he said I'd find shingles all over my yard with a 20mph wind if installed like this. He also said it would void the manuf. warranty. (I've been told to take a shingle manuf's warranty with a grain-of-salt..)I mentioned how thin they were and he said YEP! (I think he's been asked this 10,001 times, + it was at the end of their day EST and he's watching-the-clock).

I also found out that though these shingles have a wide 1-1/2" nailing strip, the high wind section (through both layers) is only a scant 3/8" tall. Furthermore, because these shingles were stored outdoors and we've had a very warm Spring, and due to the weight of the shingles above it, the adhesive 'blobs' are now spread out into a (very) thin, even layer, due to heat & pressure. Seems the three suppliers I contacted all store their shingles outdoors in the heat. So much for the 'dotted vs continuous' adhesive strip 'benefit' as the former 'dots' are now 'continuous'.

So I've become stalled, weighing the options. Perhaps this is why engineers aren't roofers! Too much attention to detail. However, I've uncovered numerous areas in the small part I tore off where NO attention to detail was paid. And that is where the decking rotted through.

Any roofers out there?