I shellacked the knots before I painted but they still bled through the 2 coats. If I paint again will they still come through?

I am using Kilz 2 to prime a bedroom but it doesn’t seem to stick. Why?

Cannot find a professional in my area to restain and finish my front door. A friend (carpenter) did it for me. He tried to strip the old stain, but was unsuccessful. Instead; he painted or used a primer of some sort – then, used gel stain over that. He polyurethaned

We have casement windows we would like to paint. They have been stained and varnished. After sanding them, is it best to use an oil based primer and then a latex paint. Is it good to put on two coats of paint? Thanks. I am painting just the sash.

What is the proper colour to paint the door jamb? The colour of the inside door or the outside door colour?

It appears that the mold is in the redwood siding. I am preparing the surface to repaint and bare wood has been exposed to elements. When I sand it down to clean wood I still see dark spots. Will this affect paint coating. I use an oil primer to stop

I have a T&G pine ceiling I sprayed it with acrylic urethane. I have overspray on fresh drywall. Can I just prime directly over the urethane overspray then paint?

BEST POWER TOOLS TO USE TO SAND WEATHERBOARDS QUICKLY?

Primer is already on this house. Can I wait until next year to apply paint?