Is there a constant that you can multiply the floor sq. ft. by, to get paint and primer, at say, 300 and 400 sq. ft. per gallon, for a given wall height??
Obviously, each wall height would have a different constant, and cathedral ceilings and whatnot would not conform. I'm just assuming that those of you who do painting exclusively must have a quick way to estimate. If it's not something anyone wishes to disclose on a public forum, I understand.
The closest I came up with is 153 as a constant, for 8ft walls. I need to run a bunch of other dimensions to see if that holds up.
I hope some of this makes sense. End of a long, frustrating, day.
This is something I never tried to do but people are always asking this question.
For material estimating:
The way I see it just keep it simple, you have to measure the floor to get a square foot area, why not just multiply the perimeter by the height and forget the formulas?
Yeah, I'm not talking about doing my whole estimate by the sq. ft., just figuring quantity of paint.
Like for a new home, it's 1,700 sq. ft., all 8' walls, if there was a formula, hell, you wouldn't even have to go to the job site, just multiply by your constant, add a little for closets or whatnot, and you'd be good.
I don't know, maybe I played with math too much as a kid.
No. I don't water. I always prime first, though. The first coat is always way low, second coat pretty much brings me up to average.
Always do two coats.
I'm in the middle of a whole house repaint, about 1800 sf, I'd guess. Gonna get some better numbers this time, and I'll report back. Been awhile since I did a whole house repaint.
I don't see how someone can estimate materials from a total floor square footage figure.
The quickest and easiest is to measure each room L x W this gives a perimeter which is measured by the height, then multiply by 2 (# of coats) and divide by 350 (average area covered by gallon of paint)
I don't see how much easier or quicker it could get.
And get a laser measure if you don't have one already... makes measuring rooms a breeze.
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