I’ve got a modified bitumen roof, black, and want to know if there’s a good roof paint(white) anyone can recommend?
It’s for a flat roof. My goal is to keep the heat down/ save cooling costs. Thanks.
I’ve got a modified bitumen roof, black, and want to know if there’s a good roof paint(white) anyone can recommend?
It’s for a flat roof. My goal is to keep the heat down/ save cooling costs. Thanks.
Listeners write in about haunted pipes and building-science tomes, and they ask questions about roof venting and roof leaks.
"I have learned so much thanks to the searchable articles on the FHB website. I can confidently say that I expect to be a life-long subscriber." - M.K.
Get home building tips, offers, and expert advice in your inbox
Fine Homebuilding
Get home building tips, offers, and expert advice in your inbox
© 2024 Active Interest Media. All rights reserved.
Fine Homebuilding receives a commission for items purchased through links on this site, including Amazon Associates and other affiliate advertising programs.
Get home building tips, offers, and expert advice in your inbox
Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features.
Start Your Free TrialStart your subscription today and save up to 70%
SubscribeGet complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine.
Already a member? Log in
Replies
I've seen, but never used, a fibered bituminous paint on material that has aluminum flakes in it--it is aluminum colored and that should reflect heat as weel as white. It's available at home centers--usually used on "mobile home" roofs.
The fibred al paint is made for metal roofs and has powerful etching VOCs that could eat some life away from the modified surface. The fibres would be un-necessary, unless he had gapping cracks and bad seams to fill. If he wanted to chance the amt of VOCs there is a unfibred that would go much further per gallon.I believe they recommend a latex typoe rather than oil based though, to avoid any possibility of hurting the roof membrane
Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!
Any exterior paint should work on that.
Welcome to the
Taunton University of Knowledge FHB Campus at Breaktime.
where ...
Excellence is its own reward!
Last summer I put a coat of Henry's aluminum glop on my BUR. I don't think the boxes carry it, I got it from a roofing supply place. About $600+ IIRC for enough to do 16 squares. It's good for reflecting heat, and it fills small cracks and holes. It's oil based, and bonds well with bitumenous stuff. Brushes, rollers, clothing, etc used for the job should be regarded as expendable.
It got us thru the second wettest winter on record without leaking, and is doing well for us in the current heat wave here in LA. My guess is it might extend the life of the old roof 5 years or more. Of course, a lot depends on your climate.
-- J.S.
Thanks to John, Piffin and all.
My roof is new, 1 year old, no leaks. It's 99 degrees today, probably much hotter on that black roof, which is why I want to paint it white not aluminum. I understand white reflects heat better than a silver color. I'll look for an exterior latex.
I found one of the buckets. What I used was Henry's #229. It says it's water based, though I sure don't remember it smelling or cleaning up like that. You might check their web site, and also http://www.conservationtechnology.com. RCT has a white paint-on roof material. Ordinary exterior paint might not hold up all that well since a flat roof gets maximum sunlight and rain impact.
-- J.S.