trailer wrote:
Bought 4 gallons of Home Depot (Behr) latex paint for some room painting.

I used roller and edge tool to paint the first room. It looks great.

However, on the second room, the part where I used the edge tool shows up
lighter that the walls where I used the roller.

What would have caused this? The paint is completely dry now.

Most likely you didn't mix the separate gallons before using and "cut
in" the second room w/ different mix than you finished rolling out with.

Second, lighting differences and texture between the roller and the pad
can make apparent differences shade.

--