Bondo the same product used as auto body epoxy filler has been used by handymen for years to repair damaged wood.
Repair window sill with epoxy.
Excavate rotted material and remove all loose compromised or weathered wood fibers with a stiff hand held.
How to repair a rotted windowsill remove the side casings.
We use the epoxy in two ways as glue and as filler.
A circular saw with.
Epoxy is the perfect material to make permanent repairs of rotting window sills door jambs and exterior molding that are difficult to remove and expensive to replace.
Fix any small or medium cracks in your concrete window sill with caulk.
Hold a straightedge against the underside of the windowsill then strike off the epoxy with a putty knife to fill any remaining voids and create a perfectly straight line.
Use the crow bar or chisel to slowly pry the windowsill off the window.
You may also need to pry away trim material known as side casing.
Use the putty knife that was trimmed with the aviation snips to shape the epoxy to match the original casing.
You mix it like cookie dough mold it like modeling clay and when it hardens you carve and sand it just like wood.
The casing comes off to clear the way for removing the old sill.
If the casings are rotting as.
Fit the narrow tip.
The epoxy was designed for boatbuilding and repair and works great on windowsills columns and other areas where gluing filling and shaping are needed.
If you have an older home and have had estimates for replacing old rotted out window and door sills you know how expensive it can be.
Expose clean wood by opening up cracks and splits with a saber saw blade broken hack saw blade scratch awl or the.
Wooden window repair remove all the paint in the affected areas.
Keep the sill in one piece so you can use it as a model when cutting the new sill.
First we brush on the epoxy to all wood surfaces and then tap in the piece.
Epoxy is easy to handle too.
Remove as much concrete debris as possible.
Saw off the old sill.
Make a plumb cut flush with the sheathing along the length of the rotten sill.