? for any shingle roofing contractors

   / ? for any shingle roofing contractors #21  
I do a lot of work for a local church that has gone from one of the bigger churches in the area to one that's losing members at an alarming rate. The finger pointing is pretty bad as to what and why it's happening. I have my opinions too, but as the contractor that they hire to do repairs, I'll only mention what applies here.

Budget for churches is a funny thing. Repairs seem to be at the bottom of the list of what gets taken care of. I spent a couple days identifying issues and classifying them as to importance as to what can be put off and what needs to be taken care of right away before it gets worse and what is critical that needs to be fixed right away. They board meets with my bids and decides what to spend the money on. I don't give disounts, and I don't care if they hire me or not. They have gone the free labor route with members for year and it's costing them now that they have to redo everything. The board always hires me to do the cosmetic things and ignores the things that will lead to big money to repair. Some are water leaks, others are wood rot that's gotten bad.

When they first called me it was to inspect their roof because their member who did all their work before me told them that they needed a new roof and it would cost $75,000 to do it right. I went all over the roof, found some issues and also saw that the shingles, flashing and caps were in excellent condition. There was a need for some repairs, which I bed as two days labor and a small amount of materials.

As to the roof in question, when hiring and bidding out a roof, be sure to specify what it is that you want used. The biggest issue that I come across is that the client assumes that the best materials are going to be used, but nothing is in writing. Get everything in writing. The roof is too important to cut corners. There are other areas that you can do this, but never on a roof.

Strip it down to the wood. Each layer is going to be weaker then the previous one. You can easily cut the life of a shingle in half or more by putting it over another layer. Whey pay for premium materials that will just fail because of a shortcut in removing a layer? That's just crazy The wood decking will need repairs. It's a given, and that needs to be factored into any roof job. Some roofers hire me to do the wood work, other times it's the homeowners when they see what their roofer is trying to pass as a repair. Always inspect everything that you hire somebody to do. NEVER TRUST them.

Once the decking is perfect, use 30 pound paper. It's twices as much as 15 pound paper, but it's more then twice as good. Remember, shingles are not water proof. They shed water to a large degree, but they are only there to protect the paper under the shingles. The paper is your water proof membrane and in my opinion, the most important part of a shingle roof.

If the paper is damaged during the roofing install, insist that it's replaced or another layer is installed. NEVER let them just nail it back into place.

Instist on metal flashing. One thing that I see fairly often is that paper is used in the valley's. Always use metal flashing there. If you have a chimney or wall, insist that the metal flashing is cut into the brick and sealed. Do not let them just lay it agains the brick and use tar sealer. It has to be cut into the brick to for a water tite seal.

Buy the best shingles that you can afford. There is a differnce in what you get, and how long they will hold up.

Insist that they use nails to install the shingles. It's cheaper for them to use staples, but it's almost impossible to staple a shingle down and not go through the shingle on a semi regular basis. This is a HUGE problem that I come across when shingles fail. The other shortcut that I see is when they use nails that are too short. The shaft of the nail must go through the wood sheething to hold. If the point doesn't go all the way through and you don't see part of the shaft of the nail, then the nail will not hold. I've seen squares come off of a roof on a windy day because the nails were not long enough.

Replace all the vents. I know that some of them might look fine, but they are often the cause of leaks after a new roof. It's more money, but something that needs to be done to ensure that there are no leaks down the road.

If you can, I would try to get the Pastor and/or Board Members to read this thread. There is some very good advice that's been given by those who know what they are talking about. Anybody that suggests removing 2 layers on a roof with four layers is just as crooked and dishonest as the person who put on that fourth layer. Ignorance and icompetence is no excuse and should be looked at as intentional dishonestly when it's something as important and expensive as this.

Good luck,
Eddie
 
   / ? for any shingle roofing contractors
  • Thread Starter
#22  
Thanks Eddie

One trustee who has been shut off the decision making process has followed this tread. We are not sure where the pastor and one deacon/trustee came up with leaving on two layers but they have decided to do it right finally. I am paying a personal price but better me than others over the roofer pulling his bid this week due to the way it was handled.

It was a no win deal for him with one cousin running over other of his family members. The roof or even the roofing contractor was never an issue but the fact one trustee would not permit the input of the other three trustees and got the pastor to force a vote on Father's Day with several first time guests due to it being Father's Day.

Eddie you are so right about the way some churches manage the building upkeep. We have four roofs on there now because in the past the church would buy the materials and there would be "work days" to reroof the church.

The roofer who cancelled out due to the conflicts suggested we use the major area roofing contractor. After calling on them yesterday I learned they had given a little cheaper bid already plus it included NEW turbine vents to replace the old ones.

Hopefully tomorrow will be a great day. :)
 
   / ? for any shingle roofing contractors #23  
What's the chances of Posting a picture of the shingles? It would be nice if you can get a picture that shows 4 layers of shingles... An insurance auditor may find a roof with just 3 layers a risk factor for structure failure and added fire damage risk....


BTW, Many wise words were spoke in this thread.... @ Eddie Walker, I like the way you tell it :thumbsup:
 
   / ? for any shingle roofing contractors #24  
Actually the purpose of tar paper is to keep condensation from warm moist air from the interior which has passed through the board sheathing or plywood and tar paper (it breathes) and condensed and turned to water on the underside of the shingles from touching the sheathing or boards and getting them wet. It also protects the shingles from sap and acids in the wood.

It's best to get a contractor that a friend has recommended and has been pleased with their work, crew, cleanup etc. Or get references and call them. You will find out whether the customer was pleased or not pretty quick. Just not trusting someone and asking them a lot of questions about things you haven't done yourself and know little about is a real turn off for a contractor. He will explain what he is going to do if he is good. Sure there are a lot of bad ones but there are plenty of good ones that take pride in their work and just having everyone think you are a scam artist that doesn't know you is a turn off. Get a recommendation or references you can contact.
 
   / ? for any shingle roofing contractors #25  
Actually the purpose of tar paper is to keep condensation from warm moist air from the interior which has passed through the board sheathing or plywood and tar paper (it breathes) and condensed and turned to water on the underside of the shingles from touching the sheathing or boards and getting them wet. It also protects the shingles from sap and acids in the wood.

You are exactly right.

I think it is ironic how many people that should know roofing don't know this. Also if the paper is to thick it won't allow the moisture to rise to the shingles and will rot the deck faster than if thinner paper was used.
 
   / ? for any shingle roofing contractors #26  
Actually the purpose of tar paper is to keep condensation from warm moist air from the interior which has passed through the board sheathing or plywood and tar paper (it breathes) and condensed and turned to water on the underside of the shingles from touching the sheathing or boards and getting them wet. It also protects the shingles from sap and acids in the wood.

This doesn't make any sense on just about every level.

What house has condensation from "warm moist air from the interior?" And what is it doing passing through the wood sheething when the roof is vented?

Seriously?

If what you are saying actually happens, what happens to the decking that is under the paper? If the paper is there to keep the moisture in the air from going through the paper to the outside and making the bottoms of the shingles wet, where does that moisture go? Does it go back through the wood after hitting the paper and THEN work it's way out through the vents?

And this is just too funny. You actually think that sap and acid in the decking is going to damage an asphalt shingle? Come on, is that what you are saying??? :laughing:

Gonna share a secret with you. Shingles leak. Water comes down at ever angle, and when it hits, it splashes and works it's way in and under the shingles every time it rains.

The paper serves a very simple, basic purpose. It keeds your decking under the paper dry. The water that gets through the shingles stays on top of the paper and works its way down, or it stays there until the heat evaporates it. Many times you'll find that there is still water under the shingles a week after a heavy rain. This is common.

On new construction, on good, perfect decking, 15 pound paper will work. I'm not questioning that, but on jobs where the decking isn't perfect, it's utter foolishness to use the thinner paper. I won't use my money to buy 15 pound paper and highly recomend everyone that I come into contact with to spend the extra money on the heavier, 30 pound paper. It is better, and it is worth the extra money.

Eddie
 
   / ? for any shingle roofing contractors #27  
Just to throw out a thought here, Eddie-- is is possible that tar paper/felt paper allows water vapor to pass, but not liquid water? I don't really know, but that might explain what bstrom was talking about....

On the other hand, if that's the case, what about the new membranes for roofs? Are they semi-permeable?

Just curious! :eek: This is a good discussion about roofs, I'm enjoying reading it, waiting for the next installment of "Roofing 101"!
 
   / ? for any shingle roofing contractors #28  
On the other hand, if that's the case, what about the new membranes for roofs? Are they semi-permeable?

Just curious! :eek: This is a good discussion about roofs, I'm enjoying reading it, waiting for the next installment of "Roofing 101"!

Me too. ice&water shield came to mind for me also. There could be differences in how materials work with so much variation in weather.

I would have thought if high moisture content air is reaching the underside of the roof sheathing while having temps cool enough to cause condensation; there are other problems with vapor barriers and attic ventilation.

Dave.
 
   / ? for any shingle roofing contractors #29  
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.
 
   / ? for any shingle roofing contractors #30  
I used Elk architech shingles on a 1830 farmhouse and I have never seen a prettier roof. Bituthane (sp?) was used 6 feet up the drip edge for ice build-up and in the valleys. The valleys were done in copper. A ridge vent along the entire peak with the zinc strips exposed about 2 inches on the very top row. When water runs over the zinc it keeps mold and lichen from growing. Not sure if that is true, but never had either. While we were inside the roof I spread boric acid powder in the hard to get places. boric acid is my way of declaring jihad on carpenter ants.
 

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