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bayouboy 
Q&A Forums Registered User
Posted: 7/09/2011 4:44 PM EST
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Polyurea Roofing System
Hey Josh and some of the other dedicated Poly guys on the site.
I am a spray foam roofer by trade. I have sprayed my fair share of arromatic's and aliphatics and want to do more with polyurea in my roofing business for the following reasons:
1) When correctly installed, it is one hell of a system.
2) Depending upon weather conditions, I have a small window of opportunity to work during daylight hours and once temps drop below 40 degress, I just as soon hang it up with foam until things warm up again.
3) Unlike typical spray foam roofing, I can litteraly spray Polyurea 20 hours a day and am limited to only moisture concerns. Using wind tents, we can spray in 25 mph winds here.
I am familiar with poly over metal having sprayed 50-60 sets this past year alone. However, I want to develop a roofing system utilizing some of the techniques that we use in our roofing business and incorporate polyurea.
The system is fairly simple, lay down polyiso system on the deck, install a modified foam stop flashing 6" oc (Nail every three inches staggered) to the nailers with a 1/8" or 1/4" max lip and cover the deck with 1/2" or even 1/4" Densdeck or Secure Rock deck using an FM-190 Fastening Patern (14 ea. 3" plates and screws per 32 square feet)
Once this is done, tape the seams of the decking board (to eliminate lines)putting initially 80 mils on seams and edges and then lay down arromatic polyurea across the entire deck (depending upon warranty terms, between 60 and 90 mils) followed by 20 mils of Urethane to give me the option of using multiple colors.
I have done this system on several occasions with 100% sucess on smaller projects, but want to start pushing this system to the customers who just wont do foam.
We did just under 200,000 sq. ft of foam roofing systems last year and know that our market will continue to grow. However, no matter how much I preach and teach, some people will never go with a foam system.
This system will be competing directly with the Modified Bitumen and Single Ply guys.
Do you guys have any suggestions are critique of this system or have any similar experience doing this type of system?
Thanks
Steve
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hollandpolyurea.com
Q&A Forums Registered User
Posted: 7/09/2011 8:17 PM EST
Related Link:
polyurea
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RE: Polyurea Roofing System
steve youre absolutely on the spot with below construction..
no remarks but one, PRICE..
customers just do not want to pay over 20 bucks a square meter for roofing..
i have seen it a lot of times before, you get a swell estemate out, been there to show samples and in the end they go for traditional roofing.
and polyurea hase some more downfalls , in a way it is less sensitive to moisture but it needs to be completely dry to get adhesion, one more thing to consider is overspray, we sprayed roofs before and cars that were up to 300 meters away from the building still got contaminated, and polyurea especially sticks to porsches and beemers, the yugos and pintos have different paint :-)
josh
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bayouboy
Q&A Forums Registered User
Posted: 7/09/2011 10:12 PM EST
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RE: Polyurea Roofing System
When I first started selling roofing, I thought that customer was only looking for a cheap price. Most of the systems that I sell today are fairly complex. I sell more $8-$12 dollar a square foot foam roofing systems today than I do $3.00 foam roofs.
Mod bit systems range in excess of $6 for flat and $10-$15 a sq ft with demo. So, with that said, there is a place in my market for a tapered insulation polyurea system that starts with demo to the roof deck and build up from there.
Fortunately since we are laying down our polyiso and roofing board, we can control the substrate and moisture for adhesion.
Polyurea is perfect for spraying in a spray tent during high winds with no overspray. Using an 8'x8' spray tent with wheels let's you cover some serious ground even on bad days.
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