What should I do with leftover paint?
Try to only buy the amount you need to avoid waste. One gallon covers about 400 square feet. If you're unsure how much you need, use the estimating calculator below.
Oil based (alkyd) paints and stains that are still liquid contain hazardous solvents. Cohasset, Duxbury, Middleboro, Norwell, and Weymouth accept it from residents monthly or regularly at their facilities.
Oil based paint and stain may also be brought to a Household Hazardous Waste Event.
Latex paint is messy, but not hazardous.
If it is usable, you can bring it to Recolor Paint (fka The Paint Exchange) in Hanover for a small fee. They also collect at some HHW events for no charge.
If it's not fit for another wall or ceiling, or recycling isn't otherwise practical, absorb the liquid with cat litter to keep your street or transfer station paint-free, and dispose of the open cans in a bag with household trash.
Paint should never be poured down any drain, unless you want an excuse to call your plumber.
What is considered 'usable' paint?
"If you would use it, we can use it."
Liquid latex paint
Original container and label
Stored indoors (never frozen)
Before bringing it in, dust off and pop the lid.
Check that the following have not occurred:
Mold, mildew growth or a foul odor
Solidification or skinning
Curdling (semi solid lumps of paint)
If any of these things have occurred, stir in some kitty litter, leave the lid off, put it in a bag and dispose with your trash.
How to calculate the amount of paint you need for your project.
One gallon covers about 400 square feet.
Measure the rooms you need to paint, including the door and window size. All measurements should be in FEET. Insert your figures into the following calculations to measure interior and exterior square footage:
Width of all walls added together___ x Height of walls___ = A (square feet) total wall surface
Height of window___ x width of window ____ x number of windows___= _B_(square feet) total window surface
Height of door __ x width of door ___ x number of doors___ = _C_ (square Feet) total door surface
height __ x width ___ divided by 2 = _D_ (square feet)
width of overhang __ x length ___ = _E_ (square feet)
A + D + E - (B + C) divided by 400 square feet per gallon = number of gallons you need.
Recolor Paint (fka The Paint Exchange) strains, batches, processes and repackages high quality, beautifully colored 'reColor' paints.
Recolor Paint has helped our Member Towns divert 4,000 gallons of good paint from the incinerator through 2017, saving them thousands in disposal costs.