PolyFilla
Polyfilla Professional Exterior Timber Filler is a durable ready to use, acrylic based, flexible filler for filling cracks, holes, dents and splits in weatherboards and other exterior woodwork such as decking and fencing.
Unlike more rigid wood fillers, it flexes with the natural movement of wood and will not crack, split or fall out.
Can be stained, clear-finished, painted, nailed, screwed, sanded or planed.
NOTE: Not for permanently wet areas or joints between weatherboards,
floorboards, panels etc.