O/T rolled roofing

[37 chief]

I have a old shed that needs a new roof. It is about 20 X 40 ft. I installed rolled roof material not too many years ago, and it needs a new roof again, seams like it should have lasted longer. I got the material from the Home Depot. Is there a brand that may be a better quality than Home Depot quality. I don't rember the name of the stuff I used, but I'll bet it is not top quality so they can keep the price down.Thanks Stan

 

[MarkWV]

Typically 90 pound rolled roofing lasts 5-7 years, if half lapped maybe 10, thats why metal is so popular, consider corrugated tin roof, goes down fast should get 15-20 years use HTH Mark

 

[super99]

Which type did you use? Single or double coverage? Double coverage is called salvage. Each roll is covered by 1/2 of the next roll. Gives a thicker covering. Chris

 

[Anonymous-0]

The last double cover rolled roofing I used was crap,didnt last 5 years.Iko brand.It looked poor when it was new.The old roofing was 30 plus years old.Metal roofing is replacing asphalt here.Fiberglass shingles are crap, they break up in the cold.

 

[Rich Va]

You need to go to a regular roofing supply place. The stuff at the box stores is just second and third rated crap for people that don't know any better.

 

[Anonymous-0]

Life of a roof is relative to cost. Roll roofing is just about the cheapest way. So, it"s got the shortest lifespan generally speaking.

You want long life? STANDING SEAM COPPER. That"ll make replacing your roll roofing every few years seem like a paulty expense.

 

[dhermesc]

"consider corrugated tin roof, goes down fast should get 15-20 years use HTH Mark"

I agree with that - except for the 15-20 years. The machine shed my dad built in the 1950s with corrugated tin still looks decent. The one he built in 1974 looks pretty good. The on my brother built in 1987 is still called the "new" machine shed - it looks it.

As long as you keep the surface clean you can get a lot of years out of corrogated tin without worrying about rust. Painted tin - not nearly so much.

 

[El Toro]

I would used use a good grade of 3-tab shingles. I got over 20 years from the roof on my mini barn
and they still were not leaking. I had the house
redone and had them to do the barn since it was only a few dollars more. It may cost more, but you wouldn't need to worry about a new roof for 25 years. Some of those shingles are guaranteed
30 to 35 years. Slate would be another good choice we had this on all the barns, houses and
machine sheds. Hal

 

[Anonymous-0]

If you have "ANY" sag in the shed roof at "any" time of the year (snow load, ect.) your rolled roofing will not stand up to the test per square foot of nailing surface. The nails will pull and the birds will get the grit = leaks On the other hand "tin roofing" in the way to go -- without a doubt. I install alot of it -- it is trouble free and goes on easy/quick. You will get many years of trouble free service out of it before you have to repaint it (if you use either galvanized or painted to begin with) 20 year warranty on the painted products... and then some. Galvanized is cheaper the painted ! ABC metal roofing is well know throughout the Northeast and West for sales service at lumber yards in many areas. There are of course other brands to choose from also. The going price here In Upstate NY is $2.00 a running foot for IMPERIAL RIB designs-- many colors to choose from also... If you need more info please email me and I will be glad to help... JIM

 

[philcaseinWPA]

The metal roof on our machine shed leaks. It is 25+ years old but it leaked from the start. We put in skylights made of fiberglass and molded like the tin and the worst leaks are there but some of the other seams leak also. Also moisture condenses on the underside and sometimes it almost rains inside. I've lived with it this long but what are the secrets to keeping it leak and drip proof? Caulk the seams? Spray on insulation inside? Still better than no roof.
Phil

 

[Anonymous-0]

I agree, if the roof has some pitch. I shingled a 20'x30' addition I put on my barn 12 years ago. It has only a 2.5'/12' pitch, so I used additional tar to aid in sealing down the shingles. (If I remember right, I used 7-8 gallons.) I also used four nails per shingle. The roof does not leak and is holding up VERY well. I live in NE Wisconsin.

Glenn

 

[El Toro]

If it will last that long in WI due to yiur cold climate you must have did it right. One of things that will hurt the life of shingles is poor circulation of air thru an attic. My daughter has an exhaust fan in her attic and its controlled with a thermostat to kick on when it reaches a certain temp. My mini barn has vents front and rear and it stays pretty cool. I think those last shingles were guaranteed 15 or 20 years and they lasted with no problems and I put them on myself with some help from my co-workers. We peeled it down to bare wood too. Hal
PS: It will take a little longer to put the shingles on and I would only do one side at a time. I would rent those air nailers or buy them. If its windy in that area I would wait until spring so they will seal.

 

[Anonymous-0]

Caulk nails that are in the valleys to stop leaks. Get airflow of some kind inside. My neighbor glued the styrofoam under his carport several years ago and mostly stopped it. At least he didn't tear the carport down and he was one of those that found time to wash 2 vehicles every single week....

 

[suptscottyb]

I think sheet metal is your best choice. you could apply a seal coat on the old roof to h2o proof and put tin on top. I think you are in s.cal, right? no roof rot here! Heck! No rain here, either!