Hoerschel wrote:
NJRVer said: "Bought a 5 gal bucket at Depot and I only used 1/2 of that for two coats on a 25' roof. It seems really thick when you go to roll it. You would think it isn't going to go far at all, but it really spreads. Looks like I will coat the roof of my cargo trailer now since I have the extra."
NJRVer: An FYI for your consideration... According to Henry's, the appropriate rate of coverage is 1.5 gallons per 100 square feet. You sought to cover 250 sq ft (25' long by 10' wide). If you had 2.5 gallons left from a 5 gallon pail, your application may have been too conservative; i.e., it should have required at least 3.75 gallons +/- to meet their specifications for adequate coverage and protection. You can still add another coat, should you wish, to know you're within spec. Given the elapsed time you just need to wash your roof before hand. In my case, I have a 30' unit and marked the roof with tape in 3 - 100 sq ft sections to ensure I rolled it on evenly. One coat sufficed for me.
That is based on straight out total square footage.
You have to add up the square footage of all the areas of the roof that do not get coated:
Roof vents, plumbing vents, fan vents, skylights, refrigerator vents, rooftop A/C units, TV and radio Antenna.
Believe me, I put two coats on and the coating on the roof now is by no means "thin".
Also, what rv roof is 10' wide?
