I can't claim credit for this idea but I don't remember who gave me this
suggestion to give him proper credit.
Health issues aside, most painting instructions suggest that you have
downdraft or cross draft ventilation when you paint the car. The exchange of
air
removes the suspended particles of partially dried paint that is in the
overspray. If these particles drop back on the freshly painted surface, the
finish may
be compromised.
While most of us don't have the facilities to make a downdraft booth, a
cross-draft may be able to be made for a few dollars.
My garage is attached to the house with two windows on the opposite side of
the garage from the entrance to the house. I mount a cheap box fan in each
window and tape cardboard around the fan to improve air flow. I then built a
wood frame that fits snugly in the door frame between the house and the garage.
In the frame I have mounted 3 inexpensive air filters that are used for a hot
air furnace. The filters remove any dust or other particals that may drift in
and land on the painted surfaces.
When painting I turn on the fans with the filter frame in the doorway and wet
the floor of the garage to keep down the dust. You must open a few windows
in the house to keep the air flowing properly and not get any paint odor in the
house. The cross-draft removes the overspray quite quickly.
Note: Make sure there is nothing on the outside of the house to get covered
by the overspray and hose down the side of your house with water before
spraying. Single stage two part paint overspray is very sticky. Trust me,
don't
ask me how I know this.
An added benefit is that you can use the heating system of the house to
control the air temperature in the garage. I was able to paint my car on a 45
degree day in March and keep the air temp in the garage at 70 degrees. Of
course
my wife wasn't home to complain about the wind tunnel effect created in our
house.
You can also modify this system for a detached garage as long as the intake
and exhaust system are on opposite sides fo the garage.
Good luck on painting your vehicle.
Gary Bouffard
59 TR3A (restored and painted silverstone grey)
59 Bugeye (see thru rust and lying on it's side)
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