So a bunch of my really good friends pooled together and gave me a nice big check as a wedding present, with the stipulation that it be used towards fixing the roof of the shop. They are concerned for my cars' well-being
. The gesture has re-inspired me to get back after the leaky roof situation. After a bit more research, I have come up with one extremely viable option and one potential option. The extremely viable option is as follows;
My first thought when I decided something needed to be done was an elastomeric coating, similar to what is used on RV roofs. These are usually around $75 for 5 gallons with varying degrees of coverage area per product. They would all be around $1000 total for enough material to do my whole roof. The problem with them, however, is that the elastomeric stuff is technically not 100% waterproof. It sheds water on sloped surfaces but if any water is held or trapped, it will *possibly* percolate through. Since the ridge of my building is cupped between the perlins for the entire length of the roof, and this area accounts for at least 80% of the major leaks, this *could* be a problem. I've looked into various methods of filling in the craters. There are a couple companies that have spray foam products that go on the exterior of a roof and are then top-coated with an elastomeric. Problem is, neither of the two I've emailed can shape it to fill in the craters and smoothly transition to the adjacent material. It basically comes out of a firehose and is applied at a uniform thickness regardless of the substrate.
Then there are silicone based coatings like this one;
http://www.homedepot.com/p/Gardner-Eter ... /205314046
They are 100% waterproof and can withstand holding water for a period of time. Down in South Texas, when it rains (usually in May & June) we get HEAVY turd-floaters for a few days with very little sparse rain otherwise. My thoughts here are to just apply this stuff to the roof as is (after powerwashing old asphalt and dirt off) and move on with my life. When it rains, the low spots will hold water for a day or two before it evaporates and that's it. The silicone is significantly more expensive at ~$225 for 5 gallons but at this point, it appears to be the most practical option. I need to measure the arc length of my roof to figure the actual surface area, which I will do this weekend (as well as mutiliate some GD mimosa trees). The building is right at 5000 sq ft so I would guess the roof to be around 5500 sq ft. This would mean material would come in around $5k, which is around my soft limit for the project anyway.
Next issue is application method. Its recommended to roll on but I don't know how well that will work on corrugated material, especially when I will likely be rolling from the ridge or edge of the building and thus in line with the corrugations. Spraying would be ideal but the manufacturer recommends against thinning and it is allegedly really viscous. One buddy suggested using a mop to evenly apply it across the corrugations. This will require more thought.
The other potential option right now is this company
http://www.thermodynamicinsulation.com/services/
Their salesman came into my trailer at work on a cold call and said they may be able to come up with something for me. I'm anticipating it being prohibitively expensive but they may know something I don't. The owner is supposed to be getting in touch with me next week so we'll see where that goes.
. The gesture has re-inspired me to get back after the leaky roof situation. After a bit more research, I have come up with one extremely viable option and one potential option. The extremely viable option is as follows;My first thought when I decided something needed to be done was an elastomeric coating, similar to what is used on RV roofs. These are usually around $75 for 5 gallons with varying degrees of coverage area per product. They would all be around $1000 total for enough material to do my whole roof. The problem with them, however, is that the elastomeric stuff is technically not 100% waterproof. It sheds water on sloped surfaces but if any water is held or trapped, it will *possibly* percolate through. Since the ridge of my building is cupped between the perlins for the entire length of the roof, and this area accounts for at least 80% of the major leaks, this *could* be a problem. I've looked into various methods of filling in the craters. There are a couple companies that have spray foam products that go on the exterior of a roof and are then top-coated with an elastomeric. Problem is, neither of the two I've emailed can shape it to fill in the craters and smoothly transition to the adjacent material. It basically comes out of a firehose and is applied at a uniform thickness regardless of the substrate.
Then there are silicone based coatings like this one;
http://www.homedepot.com/p/Gardner-Eter ... /205314046
They are 100% waterproof and can withstand holding water for a period of time. Down in South Texas, when it rains (usually in May & June) we get HEAVY turd-floaters for a few days with very little sparse rain otherwise. My thoughts here are to just apply this stuff to the roof as is (after powerwashing old asphalt and dirt off) and move on with my life. When it rains, the low spots will hold water for a day or two before it evaporates and that's it. The silicone is significantly more expensive at ~$225 for 5 gallons but at this point, it appears to be the most practical option. I need to measure the arc length of my roof to figure the actual surface area, which I will do this weekend (as well as mutiliate some GD mimosa trees). The building is right at 5000 sq ft so I would guess the roof to be around 5500 sq ft. This would mean material would come in around $5k, which is around my soft limit for the project anyway.
Next issue is application method. Its recommended to roll on but I don't know how well that will work on corrugated material, especially when I will likely be rolling from the ridge or edge of the building and thus in line with the corrugations. Spraying would be ideal but the manufacturer recommends against thinning and it is allegedly really viscous. One buddy suggested using a mop to evenly apply it across the corrugations. This will require more thought.
The other potential option right now is this company
http://www.thermodynamicinsulation.com/services/
Their salesman came into my trailer at work on a cold call and said they may be able to come up with something for me. I'm anticipating it being prohibitively expensive but they may know something I don't. The owner is supposed to be getting in touch with me next week so we'll see where that goes.



The other wall was framed correctly with the joists bearing down on the top plate over the studs. One more reason to tear it all out and start over. The sill plates on the two interior walls are rotted out anyway as there is no moisture barrier between them and the concrete and they don't appear to be pressure treated.