Ballasted roofs. How prevalent and how effective at energy efficiency are they?

I dont see a whole lot of these in my area.  Until recently I did not realize that they can be designed to meet 'Cool Roof'. specifications.

 

How many of these do you see in your area?  These are extremely heavy roofs with that much rock.

Views: 232

Reply to This

Replies to This Discussion

Found at the link Hal provided:  "A typical ballasted roof system consists of 10 pounds per square foot (49 kg/m2) of river-rock ballast over an EPDM membrane, rigid insulation and a metal roof deck."
I haven't seen one in years, generally we busy ripping them up & replacing them due to leaks & deterioration - personally I rather see a layer of insulation & a coating, and so would the owners when it comes time to repair or replace it

I agree with you.  I can't remember how long it has been since I have seen one even getting replaced.

 

Here we have the DOE setting standards for ballasted roofs so they can be considered a 'Cool Roof' also along with all the other types of roofs..  This would surely be considered a good thing if it is more energy efficient than a ballasted roof without the coating.  However, ( and speaking only for our roof coating)  there is absolutely NO WAY we would ever give a warranty for this specific application.  Rocks on top of our coating would not phase it's performance in the cold months but would definitrly drop its effectiveness in the hot months.

Spoke to the inventor of our coating yesterday.  He has not seen a ballasted roof in at least 20-years.

Anyone have any ideas where they are still used?????

Apperently ballasted roofs are still used in the UK and other parts of Europe as well as a few areas in the US.  News to me!

RSS

Featured Forum Discussions

Glass Block Windows

Started by Ken Kalke in Best Practices. Last reply by Sean Lintow Sr on Saturday. 1 Reply

What's the Most Profitable HVAC Job for Your Company?

Started by Wayne Melancon in HVAC. Last reply by Ken Kalke on Friday. 1 Reply

Lighting replacement - 300 watt LED flood light

Started by Mary Sinkler in General Forum. Last reply by Eric Kjelshus on Friday. 1 Reply

EZ Green Home is Hiring!

Started by Chloe Chapman in General Forum Jan 5. 0 Replies

Videos

  • Add Videos
  • View All

Latest Activity

Nate Adams liked tedkidd's discussion Home Performance is Failing - let's turn that around?
1 hour ago
Nate Adams replied to tedkidd's discussion Home Performance is Failing - let's turn that around?
"Ira, you're not alone. Here in Cleveland the gas company uses their own auditors, it killed…"
1 hour ago
Nate Adams replied to tedkidd's discussion Home Performance is Failing - let's turn that around?
"Website is finally up, albeit still imperfect. You can check out the very detailed case studies.…"
1 hour ago
Paul Mausteller liked Bruce Fillmore's photo
1 hour ago
tedkidd replied to tedkidd's discussion Home Performance is Failing - let's turn that around?
"Thank you Ira! We need more stories like yours to hold the evidence of harm to the faces of…"
2 hours ago
Profile IconPaul Mausteller, Mark Freeman and Bruce Fillmore joined Home Energy Pros
2 hours ago
Ira Eisenstein replied to tedkidd's discussion Home Performance is Failing - let's turn that around?
"I have been a home inspector since 2003 and evolved into energy related issues and became a home…"
5 hours ago
Ira Eisenstein liked tedkidd's discussion Home Performance is Failing - let's turn that around?
5 hours ago

Home Energy Pros

Welcome to Home Energy Pros – the unique digital community by and for those who work in the home energy performance arena.

Home Energy Pros was founded by the developers of Home Energy Saver Pro (supported by the U.S. Department of Energy) and brought to you in partnership with Home Energy magazine.  Home Energy Pros is sponsored by the Better Buildings Residential Network. Please honor our Guidelines

© 2017   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service