Experience 27 years licensed architect, work in 12 states. Currently working in Hawaii. Over 1000 buildings designed or worked on in a significant role
3 years quality control officer for Navy construction projects.
Education/Credentials Bachelor of Architecture, Cal Poly, San Luis Obispo, CA. 1977.
Expert: Mark Sundberg Date: 6/30/2008 Subject: roof coatings
Question Is white lava better than hydrostop and can white lava be applied over asphaut shingles 20yrs old-thanks,keith
Answer Aloha Keith,
Better in which regard? For temporarily stopping leaks or long term use or for keeping the inside cool and, of course, as compared to what price?
Even more basic is which White Lava and which Hydrostop product do you want to compare.
Both appear to have a number of certification but unless I know which product you are considering and for what purpose and which particular criteria you consider most important, it's quite impossible to give you any meaningful answer.
I will say, since White Lava appears to be a local Hawaiian product, I'd be in favor of it for the aspect alone. But whether which one performs better for which purpose, I can't say.
