? for any shingle roofing contractors

[Duffster]

People are a big source of water vapor inside houses. You lose a couple of quarts per day, less in winter, a lot more in summer.

Not to mention showering, laundry and cooking.

Roofers all claim that the paper is the real water barrier, but out of ~12 professional roofers I have talked to, not one has ever installed shingles according to the directions printed on the bundle, and every last one of them has given me a hard time when I wanted them to follow the directions. I have a bad habit of actually sitting down and reading the directions before I do something.

What kind of things would they do wrong?

 

[Duffster]

I used Elk architech shingles.

I think they where the best shingle money could buy, to bad ya can't get them anymore.

 

[Hawghauler]

I think they where the best shingle money could buy, to bad ya can't get them anymore.

Darn it. I used to have people stop and knock on my door asking me what shingles I used. Great product.

 

[CurlyDave]

What kind of things would they do wrong?

The most common issues were using more exposure than the manufacturer recommends (makes the job go faster), cutting the wrong amount off the end of the first shingle in a new course (each type has a slightly different recommendation), and not nailing the shingles in the correct place (the instructions are really specific on this).

 

[Duffster]

The most common issues were using more exposure than the manufacturer recommends (makes the job go faster), cutting the wrong amount off the end of the first shingle in a new course (each type has a slightly different recommendation), and not nailing the shingles in the correct place (the instructions are really specific on this).

Wow, that is all pretty basic stuff.

 

[Pops15]

The most common issues were using more exposure than the manufacturer recommends (makes the job go faster), cutting the wrong amount off the end of the first shingle in a new course (each type has a slightly different recommendation), and not nailing the shingles in the correct place (the instructions are really specific on this).

I've seen that allot on architectural shingles.

 

[Pops15]

People are a big source of water vapor inside houses. You lose a couple of quarts per day, less in winter, a lot more in summer.

I looked it up and tar paper is slightly permeable to water vapor, not very, but enough to allow some transport. Liquid water does not flow through, but the permeability is the same in both directions.

Roofers all claim that the paper is the real water barrier, but out of ~12 professional roofers I have talked to, not one has ever installed shingles according to the directions printed on the bundle, and every last one of them has given me a hard time when I wanted them to follow the directions. I have a bad habit of actually sitting down and reading the directions before I do something.

Not ALL. Water will never reach the shingle underlayment on a properly installed roof. If it did the average roof would only last a few years.

 

[Duffster]

Not ALL.

Ditto

(Rain)Water will never reach the shingle underlayment on a properly installed roof. If it did the average roof would only last a few years.

Never say never. But I do agree.

 

[EddieWalker]

Not ALL. Water will never reach the shingle underlayment on a properly installed roof. If it did the average roof would only last a few years.

This is assuming that every shingle is perfect and ages at the same rate as all the others. This is also assuming that every nail is installed properly and that the glue on the bottoms of every shingle melts to the bottom shingle perfectly. That the flashing is sealed perfectly and that the right type and amount of flashing cement/glue/ or caulking was used at every vent and/or location that there is flashing.

On heavy rains with strong winds, the water will go uphill on a roof. It will go sideways on a valley and it will come over a drip edge and work it's way buck up and under if there is a way.

Even with all the right materials and using them properly, the house itself can move around to the point that flashing will become loose.

Paper makes up for most of these things. In every leak that I've looked into on a house, I've found moisture under the shingles. Saying that it's not supposed to be there is all well and good, but it's not reality. Having the heavy 30 pound paper makes up for all the little things that can and do go wrong on a roof.

Eddie

 

[Gale Hawkins]

Update to post #1 of this thread.

We have a nice new 30 year shingled roof on the church after it was stripped to the decking and covered with 30 pound felt.

The decking (saw mill cut) looked perfect all over like it did when it went on 46 years before. It is hard to remember back that far but it looked like it never had been rained on during construction.

The funny part after the high bidder was given the job (a cousin of one trustee) he decided it was too much since he really did not have more than a PU and trailer they went with the low bidder who can in and talked to everyone one Sunday morning.

Well the really funny part was the last roof said to do it right and for the shingles to be covered by the maker they could not be put on over two old roofs.

The only two pushing for not doing a complete tear off of the four old roofs had to hear all of that too.