Remove the damaged or rot affected wood using a routing tool or chisel, back to bare, good wood. Treat with Timbabuild EWS.
Apply Timbabuild into the repair area. The thixotropic nature allows it to be used in horizontal and vertical applications. Smooth to a finish.
Once cured the entire repair area can be sanded, painted or varnished over as necessary, leaving a guaranteed lifelong and invisible repair.