PaintSquare.com
      | Connect Follow us on Twitter Like us on Facebook
About | Subscribe | Advertise
  

 


Stretching the life of the single-ply roof

From JAC, June/July 2009

by Penny Gift, Republic Powdered Metals Inc.

Current coatings technologies provide economical means to restore aging surfaces, with solar reflectivity adding a energy-savings bonus...
(Login to read the full article)

   

Tagged categories: Cool roof coatings; Energy efficiency; Green building; Reflective roof coatings; Reflective Roof Coatings Institute; Republic Powdered Metals; Roofing materials; Sustainability

Comment from David Lawson, (3/3/2011, 4:27 PM)

Although I agree with including reflective properties in the coating it has been my experience that once these products get dirt on them (and they will) their ability to reflect is diminished considerably. Also if they do not have UV resistence they will simply break down. The product I favour is the one with multiple ceramic types that offers more than mere reflection and can block ALL forms of heat transfer. It also has UV resistence.


Comment from Phil Kabza, (3/17/2011, 8:41 AM)

I would like more information from Mr. Lawson on the alternative ceramic coatings that he favors, in particular independent third party test data that demonstrates the ceramic coating's resistance to thermal conduction. While I have read promotional literature that contains such claims, I have never seen reliable data to back them up.


Comment from Guy Ralfe, (3/22/2011, 11:22 AM)

It is correct that with weathering the performance will degrade but even with the dirt it well outperforms the original black/grey or even a galvanized steel roof. In support of Mr Lawson's ceramic enhanced coatings, reflectivity is a key component in reducing the surface temperature but it is the conductivity of the coating that aids its performance in preventing the heat loading at the surface, transferring into the lower layers of the roof structure and affecting the interior temperature. A bit like cars, most will get you from A to B some with a lot more comfort!


Comment from dick fricklas, (3/23/2011, 10:55 AM)

It was stated that the seams of the EPDM roof were failing. The original neoprene-based seam adhesives are no longer used, having been replaced by butyl adhesives, then butyl-based tapes. All the seams should be strenghened by a self-adhering EPDM cover strip. Coatings are fine, but reinforcing the seams comes first!


Comment from Jose Miguel Ferrer, (3/25/2011, 11:14 AM)

Great article. We have been usign urethane coating in several roofs for at least 10 years. I would recommend to buy products from well known and experienced manufacturers. The can assist you to find the best products for your projects.


Comment from Tom Schwerdt, (3/28/2011, 5:20 PM)

"Ceramic" is a pretty broad term - Yes, for a good roof coating you want to have pigments which do a good job of reflecting both visible and infrared light and a binder (such as acrylic latex) which resists UV. Dirt, mildew and algae will degrade the reflection over time, but never as far as as your classic black roofing materials. The coating should be able to be scrubbed with some TSP (or diluted bleach) to kill the mold/mildew/algae.


Comment Join the Conversation:

Sign in to our community to add your comments.

SSPC: The Society for Protective Coatings
http://www.sspc.org/

Join SSPC and Enhance
Your Career !


Nationwide Overspray
Profession Overspray Removal Services

The Finest Name in Safe Overspray Removal. We specialize in removing all contaminants from any surface. Family Owned and Operated for 33 years! Fully insured. Satisfaction is guaranteed.


Termarust Technologies
Termarust (HR CSA) Chemically Stops
Active Corrosion

Hydro Utility Penstock Overcoated in 1997. Was power washed and overcoated with major cost saving. No environmental impact with Termarust's low LC50 of 41,007 ppm.


Axxiom Manufacturing
Schmidt Improves
Portable Blasters

Schmidt's VBS System reduces blowdown intensity, prevents exhaust from damaging floor while using no screens or filters. Reduces sound; Increasing safety.
Call 1-800-231-2085


U.S. Zinc
Helping the World Work

We offer custom grades and packaging of zinc dust, oxide, metal and fines, U.S. Zinc provides direct shipping to locations worldwide. U.S. Zinc – Helping the world work


Novetas Solutions
Number 1 Crushed Glass Abrasive in America!

6 NEW plants coast to coast! Safe for environment, 100% recycled glass. White Metal Finish! No unsafe toxins like Beryllium & Arsenic!
Call 866-775-6226


Elcometer, Inc.
Elcometer 106 Pull-Off Adhesion Tester

Portable, easy to operate; Provides numerical value for adhesion; Comes in carrying case - Ideal for site tests; No power supply necessary.


DeFelsko Corporation
PosiTest Automatic Adhesion Tester

Electronically controlled hydraulic pump applies smooth and continuous pull-off pressure at user selectable rates. No twisting, pumping or cranking.

 
 
 
 
Technology Publishing

The Technology Publishing Network

The Journal of Protective Coatings & Linings (JPCL) PaintSquare
Durability + Design Paint BidTracker

 
EXPLORE:      JPCL   |   PaintSquare News   |   Interact   |   Buying Guides   |   Webinars   |   Resources   |   Classifieds
REGISTER AND SUBSCRIBE:      Free PaintSquare Registration   |   Subscribe to JPCL   |   Subscribe to PaintSquare News
MORE:      About PaintSquare.com   |   Privacy policy   |   Terms & conditions   |   Site Map   |   Search   |   Contact Us
 

© Copyright 2000-2015, Technology Publishing / PaintSquare, All rights reserved
2100 Wharton Street, Suite 310, Pittsburgh PA 15203-1951; Tel 1-412-431-8300; Fax 1-412-431-5428; E-mail webmaster@paintsquare.com