[Teetorbilt]

Anybody familiar with this stuff? It looks good to me. Take a closer look at
http://www.na.graceconstruction.com/product.cfm?mode=c&did=9&id=63#1857
There is a mention in the new edition of 'This Old House' magazine, pgs. 44 & 46. I am thinking of using it on my house, I want a bullet proof roof that I'll never have to worry about again.

 

[Grumpy]

Yeppers Grace makes the best ice shield on the market, no doubt. I'd use it on my own house. Infact I'd insist on it on my own house.

There is no such thing as a bullet proof roof. Yes if you use this as your felt, no ice or water is gonna get through but your going to replace those singles in 15-20 years anyways. So you get no worries for those 15-20 years.

 

[Teetorbilt]

I'm going metal on the roof. The reflectiveness should reduce my cooling costs, black algae or fungus doesn't grow on zinc and many of the older homes (built at the turn of the last century) are still sporting their original roofs.
I was told that the key to longevity is the membrane but none of the roofers that have given me estimates knew anything about it. Tom Desilva uses it just around the perimeter and then covers it with 30# felt. I would feel better covering the entire roof with it, would I still need or want the felt? Code issue?
How much does it add to the cost?

 

[Grumpy]

A roofer who doesnt know about grace is a.... Well I was going to say moron but maybe Grace hasn't marketed it's ICE shield in Florida.

Cover the whole roof with it, it won't hurt anything. It will cost more though. A roll of 30# is: $12 Grace is $100. I think it's worth every penny, but now you can see why people usually only use it at the perimiter.

 

[Teetorbilt]

Thanks Grumpy, I'm going to do the entire roof.

 

[Grumpy]

LOL I just realized you are putting a roof on in Florida to Colorado or Michigan standards. That roofs never gonna leak!

 

[Teetorbilt]

Grumpy, I don't get your drift.
We don't get snow or ice but last week we had an afternoon thunderstorm with winds in excess of 70 MPH. Wiped out all of the canvas on my boat and blew out 1/3 of the pool screening.
Once in a while we also get the big ones like Andrew, Donna, Cleo, et al.
That is what I am concerned about, wind driving rain under the shingles.
I see a metal roof as having fewer points of entry and the membrane as a backup. The combination should unitize the roof as well so that it all comes off in one piece when the big one hits. LOL

 

[Grumpy]

The ice shield's primary function is to protect against ice backup. It's secondary function is to protect against wind driven rain, but a heavy felt or syntetic could do that. I'm saying your roof's never gonna leak, which is good.

 

[dougger222]

Up here in Minnesota I never see the stuff. Last fall on a trip out to the north east it's all you see. I could buy here but at $100 for a 2 square roll, I can get Certainteed Ice and Water sheild for $41.00 for a 2 square roll.

The stuff does look pretty good though. Felt paper around here runs around $20 for a four square roll (15#).

 

[jmorgan]

Grace Ice & Water Shield is the stickiest and has the best seal. Should sell for about $80/ 225 sq ft roll. We sell lots in Florida, mostly over Dens Deck/Loadmaster, under commercial metal roofing. Also as vapor barrier under flat, insulated roofs. You get what you pay for with these self sealing underlayments......the rubber adhesive additive is the expensive part (also gives the stickiness & fastener seal).......the more you pay, the more SBS Rubber there is in the adhesive. Grace Ice & Water Shield has Dade County wind approval. Also, cheaper underlayments are granule surfaced....metal roofing CANNOT be placed directly on the surface, needs felt on top. Grace needs NO felt. Why add the extra penetrations!
Jim

 

[dougger222]

I guess the stuff has never caught on in Minnesota. The few times I've seen it used it's been under cooper roofs on 1/2-1 million dollar homes. It looks like a great product though, I've yet to use it.

By the looks of it, it looks like it could be slippery even when dry. Could a guy stand on the stuff on a 8/12 with no boards? Sometimes I run into bad batches of Certainteed I/W and it's slippery on even 6/12's, like it was wet from the factory and never dried. I've never heard of Certainteed's I/W sheild not sticking!

On all roofs that I do 6 feet of I/W is used on all eaves. The job I'm doing now is a 43 sq 8/12 and 9 2sq. rolls just barely made it. Figure the builder payed $45 per roll material then $30 per roll installation, $675 totall, now double the material amount for Grace's product. On average an extra $400 per job for Grace's I/W at 50 homes a year would really add up. If I told my three builders that Grace was the best stuff in the world which it probly is they would not bite for the extra cost.

 

[Grumpy]

It's not slippery atr all when dry but is a bit slippery when wet. When dry yes you could however we make a point to put boards on any roof with a 8/12. If it's wet it's not recommended to stand on any roof with or without grace, with no fall protection.

Grace sticks like a sum-n-a-*****. When I am pushing grace on an owners house I literally take a piece of the grace, and then a piece of whatever else I have. I stick both to my harry arm and then yank em both off. Where the grace was, almost all my hair is gone. Where the other one was most of my hair remains. After I do that, they are sold on the grace. I've only done it a few times because it takes a few weeks for the hair to grow back

 

[dougger222]

Grumpy, that sounds like a very painfull way to sell a product. Perhaps someday I'll come across some and see how it works first hand. Actually, every now and then I see it on comercial new contruction where a metal roof is being installed.

 

[Rathion]

Installing Grace

I just learned about Grace this winter. I was going to use it around edges, valleys, chimneys etc. Can anyone explain how it works? I'm assuming it lays directly to the deck but how do you overlap the 15lb felt then?

 

[Grumpy]

Felt overlaps ontop at least 4 ". Some guys overlap 100%.

 

[AaronB.]

The hair pull test

 

[Grumpy]

The hair pull test

One day it was hot about 90 degrees and the wind took a corner of the grace and folded it over. It instantly stuck to my arm. When I pulled it off I was missing all arm hair for about two weeks.

 

[AaronB.]

I have done that, but not intentionally repeated it.

 

[jmorgan]

Rathion,
Go to www.graceconstruction.com and click on roofing underlayments/videos...watch the video for installation techniques. Site also describes how Grace Ice & Water Shield works.
Grumpy,
I've never heard of your hair technique.....impressive dedication to your customers! What happens if you demo 5-6 people in a week....you must run out of hair! I've lost hair too, but accidentally only. What a salesman!
Jim

 

[Rathion]

LOL..thanks!