How To Repair Wood Window Frames

Step 7 paint.

How to repair wood window frames.

Then using medium sandpaper wrapped around a wood block sand the channel. Use rough grit sandpaper to level the hardened epoxy with the window frame. The sandpaper is needed to smooth out the texture. If grime is blocking the channel use a sharp wood chisel to remove the blockage.

The wiggle helps ease the point into the wood with less stress on the glass you may have to hold thin muntins from behind to keep from breaking the rib or muntin. Finally lubricate the channel with a coating of wax. First get rid of the existing paint and chemicals on the wood. Go over the surface with fine grit sandpaper afterward to create a smoother surface.

If the channel is squeezing against the window widen the channel by inserting a wood block where it binds and tapping it with a hammer. Set the edge of the putty knife across the tabs and wiggle it side to side pushing the point into the wood until the tabs are flush with the neck of the glazing rabbet e.