Interim roofing material- for the winter
I’m building a front porch and want to protect the roof for the winter, but not shingle it until next year. I plan to use the porch roof as a platform/staging to replace all existing trim on A-dormers, install new windows, and re-roof existing house first, but not until next spring. I want to roof right over the interim and use it as underlayment (like felt paper).
So I need something durable and not slippery. I’ve looked at Ice & Water and other membranes and they all call for 60 days max exposure. I’m in MA, so weather will be harsh. Pitch I’ll be walking on is 4/12. Sand-coated water & ice would be good if it would hold up longer.
I’m thinking I may have to go with roll roofing/double coverage, but that’s bulkier than I would like. Keeping cost reasonable would help, too. There are nummerous hips and cheeks to consider, so a thinner underlayment would be best. I plan to shingle with IKO – whatever they call their “architect series”.
I could probably go with 50# felt and remove it in the spring if I and the weather tear it up, but I’d like to find a better solution.
I attached a photo to give an idea of hips and cheeks involved. I hate to pay for something that would last 20-30 years when I really only need it for 6 months.
Any suggestions??
Thanks much!
Scott
Replies
Titanium UDF
I redid portions of my own roof, and it spent months not only under the sun, but also getting walked across constantly. Stood up very well.
Be aware, everything is going to be slippery in winter though. Make lots of staging jacks.
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Looks like just what I need, thanks for the reply.
Think you had a typo, found it under UDL. Below is a link to one manufacturer (InterWrap), where they say 6 months of UV exposure is OK. A new England winter is probably equivalent to 2 months UV elsewhere, so I should have plenty of time.
Did you use InterWrap, or ??
http://www.interwrap.com/Titanium/
Yep - my goof!
They only had one kind when I put mine on, and it looks like the 30. I would have used their PSU product too but no one near me carried it.Rebuilding my home in Cypress, CAAlso a CRX fanatic!
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putt
Sand-coated water & ice would be good if it would hold up longer.
Certainteed winterguard (sand coated) is slippery when wet.
Rich
A second vote for Titanium. I've left it open at least 6 months.
http://www.quittintime.com/ View Image
Thanks for the replies. A local supplier carries RoofTopShield II and GAF Deck-Armor. They sound similar to Titanium UDL (by InterWoven).
Anybody used RoofTopShield II or GAF Deck-Armor? They both claim non-skid, RoofTopShield II claims "improved non-slip" surface, same as titanium. All 3 say up to 6 months UV exposure.
In case anybody is interested, here's the websites:
http://www.rooftopguard.com/en/product_details/p_details.html
http://www.gaf.com/content/gaf/res1/roof/RS_DeckArmor.html
(Titanium website in my previous post)
Titanium and RoofTopGuard II are both vapor barriers. GAF is breathable. I don't care on my porch, but I'll have enough left to use on the main roof, where I hope to have Icynene insulation blown into rafter cavities.
Should I go with the breathable, and hope it holds up as well as Titanium?
Thanks,
Scott
RTGII is fine.
GAF is breathable. It's also "leakable". In a hard rain, it lets a little water through. I used it once and had to recover with Titanium. http://www.quittintime.com/ View Image
Kinda like Depends maybe !!
I woud NOT use the RoofTop Gaurd. several years ago I was experimenting with a variety of materials because i was planning to eliminate 30# felt from my standard underlayment.RoofTop Gaurd was in the running for my new standard underlayment-UNTILL I stepped on some that had dew on it.--hoooo doggies that stuff was slippery! eventually settled on titaniumUDL which we have used exclusively for 3-4 years now.
I also covered a porch roof with Certainteed wintergaurd and left it exposed through most of a winter 2-3 winters ago.-- It held up absolutely fine and showed no signs of detrioration. It did face east and was under some pine trees. It never sealed down before I slated the porch--but despite that it kept the enclosed porch dry through the winter.stephen
That was the original RTGI wasn't it?I am impressed with RTGII for non slip by comparison to felt. No personal compare to the UDL tho.
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I can vouch for a product named RoofTopGuard. I live six lots away from a project that was stopped in its framing stage for an alleged over-height issue, plus some other things.
They permitted it to move and close at the weather-out point. It is a big thing with a main roof at 14:12 or 16:12 pitch, but because the capping trusses were no put on, a large almost-flat pitch is at top, where the cappers were to bear.
It was covered with RoofTopGuard, with single strips of an I&WS product run in the valleys.
Dry inside after two and a half years, and the RTG looks the same as when it first went on.
Way upstate NY, Adirondack mountain region, deep cold winter, fair amount of snow, just had the wettest summer on record.
View Image
"A stripe is just as real as a dadgummed flower."
Gene Davis 1920-1985
The ice and water will hold up fine for a winter's wear.
BNut it is a bit slippery for all that work, sometimes.
RoftopgaurdII is great. I've had it on for up to five months with lots of walking and working over it. It walks better on a 5/12 with dew than tarpaper dry on a 3/12 pitch.
I've also seen demo of the Titanium - good for walking on, good grip, but I don't know how long it stands up. Haven't used it myself.
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Taunton University of Knowledge FHB Campus at Breaktime.
where ...
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RoftopgaurdII is great.
I've also seen demo of the Titanium - good for walking on, good grip, but I don't know how long it stands up. Haven't used it myself.
They've quit selling RTGII here. Titanium won out. I bought the last 4 rolls of RTGII in town for half price about 2 years ago.
http://www.quittintime.com/ View Image
Did it win on price or totally better?the UDL is white or light coloured IIRC, that might make a diff in your southern clime. I like that black TRG helping the frost leave when sun comes up
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Price was about the same. Probably the color. I like it a little better simply because it looks different than felt, while RTGII kinda looks like felt from the ground. When I was charging more for it, I wanted the owner to perceive a difference for the money. Now, Titanium is slightly cheaper than #30 felt, and it's always been cheaper to install.http://www.quittintime.com/ View Image
Cheaper than 30# sounds great.But as I read on, I see he finds UDL hard to get up north here, same my experience with availability after seeing the UDL at a show, while the UDL has run the RTG off down your way...i'm betting it is the colour and climate difference.
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I've seen that "REX" brand that Smith is using on his Dormer addition, the GAF product, a brand called Permafelt, and a DOW product that all look similar. Hardly see any felt used much anymore.http://www.quittintime.com/ View Image
Just an update, in case anybody searches and finds this post. I've had the RTG II on since last Nov/Dec, still no shingles. "Spare time" remains as hard to come by as disposable income. RTG II looks great, roof deck has been dry since applied, and the non-slip is exactly that. Most work has been on the porch itself and new walk-out bays in the front of the house, but when I've been up there I haven't slipped yet.
Still looks good, too. I'm hoping to roof it this year, but given post #10 here and how mine looks now, I'm not concerned about it holding up for another winter.
Only complaint I would have is that the seam sealer I used, I think Geocell, didn't really stick. I tried to stick the RTG to the I&WS but no go, the paper curled up where I tried this. I thought it would be good to keep the wind from blowing up under the paper, but nailed as directed this has not been a problem. I wouldn't use the Geocell again.
Thanks again for the posts last year. I'd hate to be applying new layers of felt as needed. Your pointers to RTG II saved me much aggravation.
I just dried in a garage today with the REX product. It was raining as I finished up, and it's on a 7.5/12 pitch and I stuck to it like glue in the rain.I've used RTGII quite a bit, but don't like how it can ball up under your foot and start you slipping if you aren't careful on a steeper pitch.Tried the Titanium once last year. I like the way it went on and the walkability, but I made the mistake of putting it on with a stinger slap-cap-nail stapler. Leaked almost immediately.The REX went on easy today, and the nailing pattern is very light...8 inches on the edges and 24" OC in the field. They demo it in the store here by poking a nail hole in it, then pulling the nail and pouring water over the hole. It doesn't leak. We'll see how it holds up, but it went on very easily. Says it's good for 6 months.Steve
Edited 9/16/2009 7:29 pm by mmoogie
Well, I went with the RoofTopGuard II for availablity. I hope to be using it this weekend.
InterWoven's website had a dealer locator feature for Titanium but the info is outdated. I called a couple of the places indicated near where I work and neither carried it anymore. I called a place near my house and they had it but are a wholesaler and wouldn't sell a single roll to someone off the street. He said they do supply a local lumberyard, so I called them. When I asked for "Titanium UDL roof underlayment" and he said "What's that - one of those synthetic roofing papers?" I kind of gave up on the Titanium. Plus the supplier said he didn't know if he could get it to the lumberyard by this weekend.
RTGII's non-slip (new since RTGI) sounds pretty good, dark is good for melting frost/snow, and most important - if it kept a building in the Adirondacks dry for 2 1/2 years it should last until I get it roofed. I didn't get the name Putt for being fast and keeping to aggressive schedules! Plus, the 5' length is perfect for my 8'-6" rafter length and a bit to fold up under the existing roof shingles on the main house.
Grant, thanks for the heads-up on GAF Deck-Armor. I definitely didn't want "leakable"!
Thanks to all for your help. This advice alone was worth the cost of signing up.
Gene Davis - any relation to Hugh Davis over North Creek way? My in-laws live there and are friendly with Hugh's family. I hope I have his name right - I've never met him but have seen the rest of his family a few times, and I'm told he builds "beautiful homes".
Thanks again,
Scott
Your experience was similar to mine in trying to track it down - even down to the lumberyard!Rebuilding my home in Cypress, CAAlso a CRX fanatic!
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you won't generally find it at a lumberyard--you need to buy it from a roofing supply house that deals with professional contractors-NOT a lumberyard.
stephen
Surprisingly - I was able to get mine form the HD Contracter Desk!Rebuilding my home in Cypress, CAAlso a CRX fanatic!
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