DIYbanter - View Single Post - How to get a nice vertical line when painting two walls different colors

(Jeff Ishaq) wrote in
om:

Hello,

I'm painting a square room, and one wall is to be red; the other walls
should be white. All the walls are spackled. I am having trouble
getting a perfectly straight vertical line in the very corner of the
room, where the red paint of one wall ends, and the white paint of
another wall begins. The slight protrusion of the spackle makes this
transition look very jagged, as it also causes paint to bleed
underneath the masking tape when I try to mask off a nice line.

Is there a trick to getting a nice straight vertical line that
transitions from one color to the other in this situation? Someone
suggested to me 'gum arabic', but I haven't the slightest idea what it
is, or what I might do with it.

Thanks!
-Jeff

easiest solution is to run a bead of caulking (paintable) down the
corner prior to painting use a commercially available tool or a wet
finger drawn lightly over the caulk to make a slightly rounded corner.
then just use a good brush and paint as straight a line as you can get
if its a bit wavy straighten it up on the next coat. More often than not
using tape just leads to bleeding.