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What in the sam hell is this stuff made of?? Cement?? Got two pieces drop shipped to me and the sheets were leaning on my door this morning when I got to the shop. When I went to "pick" it up to toat it in the shop, I about fell out on the ground. I'm used to throwing mdo around (and the extira was only 3/4 of in. thick) but this stuff is heaaavvvyyy.
Know on to the important question. Any feed back on the product? Good...bad...happy medium?
-------------------- Snow's Sign Works 865-908-0076 snowman@planetc.com www.snowsigns.com
I'm out of my mind, but feel free to leave a message... Posts: 1640 | From: Sevierville, TN | Registered: Jul 2005
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When you get back from your hernia operation, You will like working with the stuff except for the lifting part. We have excellent results using the stuff for the last 2 years. Kilz2 Primer or Automotive.
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Hello guys, I have worked with a tech at CMI {the manufacturer of Extira}and used the product in several situations. I have several projects out, and have been very pleased thus far. Pretty facinating product. If anybody has any questions, or if anyone else has worked with Extira, would like to here from you...........
-------------------- Brad Barhorst Visual Concepts 25 N Main St. Ft. Loramie Oh Posts: 5 | From: Ohio | Registered: Nov 2005
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I was planning on using for a "stiff back" for a 6'x7' arrowhead sign that I have to do. I'm using 2" hdu on the front and eps foam for filler (gonna be 6" thick so I can carve it) and this stuff on the back. I think I'm going to back up and punt and get some 3/4 in mdo (like I intended to) for the back instead. I think its gonna be way to heavy to manhandle around the shop for fabrication if I don't.
Looks like good material.......but I think I'll play with it on a smaller scale.
-------------------- Snow's Sign Works 865-908-0076 snowman@planetc.com www.snowsigns.com
I'm out of my mind, but feel free to leave a message... Posts: 1640 | From: Sevierville, TN | Registered: Jul 2005
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I just glued up a 4'X6' HDU, Extira panel. The HDU was too light and rather floppy. The combination did add the weight but not very much stifness.
Brad,
I really like Extira for some applications. I don't use it as a substitue for anything. It is what it is. Kind of like of 1/2" PVC which also stands along as a new substrate.
We go through a couple of sheets a week. Mainly 3/4" stock. Originally we had problems with paint adhesion. I solved this with an epoxy wash solution. Then prime and paint as usual.
-------------------- Joe Crumley Norman Sign Company 2200 Research Park Blvd. Norman, OK 73069 Posts: 1428 | From: 2200 Research Park Blvd. | Registered: Sep 2001
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According to the specs on the CMI website, Extira weighs 48 lbs/ cubic foot. A 4' X 8' X 3/4 "" board is 2 cubic feet of material. 96 lbs/sheet.
MDO weighs about 72lbs/sheet. Rapid
[ December 02, 2005, 01:24 AM: Message edited by: Ray Rheaume ]
-------------------- Ray Rheaume Rapidfire Design 543 Brushwood Road North Haverhill, NH 03774 rapidfiredesign@hotmail.com 603-787-6803
I like my paint shaken, not stirred. Posts: 5648 | From: North Haverhill, New Hampshire | Registered: Apr 2003
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I have used it only a few occasions. Just recntly for a 3 X 8 sign being shipped to the carribean. Joe Crumley's suggestion of an Epoxy wash worked real well. If Imay Joe, he has mixed 2 part epoxy and thinned roughly 20% with thinners. This gets coated liberally to the material and soas in real well.
One thing extira does not tell you is to ensure all edges are eased and if using a paint mask during production, make sure you break the edges with sand paper before to peel the mask off, otherwise it will take primer and all off, as there is no real structure to hold it on. I unfortuntley know this from experience.
On the plus side, it will not swell mush and is very durable outside. I had a piece sitting outside my old shop for 2 years unprotected and it sat in water up too 8 inches on occasion, and amazingly it did not show signs of swelling or degradtion.
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I have tried it one time. It was fairly hard to sandblast and we also had trouble with the primer pealing. Its probably a good product, but haven't had much time to experiment with it. We bought a 1 1/4" sheet and it is heavy stuff.
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What good, pray tell, is a sign material that has adherence problems with paint? Or am I missing something here?
I used a piece last summer for a 12' sign, because it was available in a 16' length, which made it convenient for that particular job. The 4" drop is sitting outside in back of the shop, unfinished - we'll see if it holds up according to the hype.
-------------------- "A wise man concerns himself with the truth, not with what people believe." - Aristotle
Cam Bortz Finest Kind Signs Pondside Iron works 256 S. Broad St. Pawcatuck, Ct. 06379 "Award winning Signs since 1988" Posts: 3051 | From: Pawcatuck,Connecticut USA | Registered: Nov 1998
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Please keep up informed about the drop behind your shop.
I soaked a piece in a bucket of water for a couple of days. I then measured it for swelling. It did increase a little. Better than I thought. This stuff is water resistant but not water proof.
It sure has a place in our shop.
-------------------- Joe Crumley Norman Sign Company 2200 Research Park Blvd. Norman, OK 73069 Posts: 1428 | From: 2200 Research Park Blvd. | Registered: Sep 2001
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Extira(R) is a wood based composite product specifically formulated and manufactured for exterior use. Because of the product's water resistant properties and our steam injection process, water based primers may not be a good choice when used with masking agents. In those applications, we recommended a good exterior surface sealer as your first down coat. An epoxy wash as discussed earlier, or exterior grade polyuerathane is a good choice.
Visit our website for more detailed information. You can find us in the Merchants Forum, or at www.extira.com.
-------------------- Mike Steiber CMI Chicago, IL Posts: 5 | From: Chicago, IL | Registered: Jul 2003
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I just Tried Joes Epoxy wash on the Extira and I all I have to say is WOW... I like the finish much better. The only bummer is I can't spray the epoxy. But it really elimanates the Fuzz I Usally get with the Auto Primers. Thanks Joe Great tip.
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We checked out Extria for a sign project we had in mind.
I looked at the web site and it says Extria is only 5 year outdoor rated. (well 5 year limited warrenty)
Thats like using intermediate vinyl (4-5 Year) on a Dibond Sign for an architectural corporate office outdoor sign.
5 years is not good enough, sorry. "Outdoor" Signs need to last way longer, in my opinion.
I want my signs to last as least 12 years, but expect them to last longer.
So we canned the idea of using this product outdoors for any long term use. I remember getting burned very badly using Medex, and even though Medex and Extria are two different products, I'm going to take the wait and see approach.
[ December 13, 2005, 07:43 PM: Message edited by: Dave Draper ]
![[Eek!]](eek.gif)
it up to toat it in the shop, I about fell out on the ground. I'm used to throwing mdo around (and the extira was only 3/4 of in. thick) but this stuff is heaaavvvyyy.![[I Don t Know]](graemlins/dunno.gif)
![[Smile]](smile.gif)
![[Bash]](graemlins/bash.gif)
for a 6'x7' arrowhead sign that I have to do. I'm using 2" hdu on the front and eps foam for filler (gonna be 6" thick so I can carve it) and this stuff on the back. 
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