Filler is commonly used to repair holes, cracks and surface defects before painting. Putty has more specific uses, including some timber and glazing work, so choose according to the substrate and product instructions.
Choose Fillers and Putty for Interior and Exterior Repairs
Screw holes, chipped plaster and damaged timber edges stand out once fresh paint catches the light. MacBlair stocks putty and fillers for making good before decorating, including lightweight filler in 500ml and 1 litre tubs, white and teak linseed oil putty, and weatherproof exterior filler powder.
Match the repair material to the surface and location. Lightweight filler handles common interior patching, while exterior work needs a product specifically approved for outdoor exposure. Linseed oil putty has different uses and drying behaviour, so check the pack before glazing or coating it. Apply repair material with the correct filling knife or blade and build deep repairs in stages if directed.
Let the repair dry fully, then level proud edges with sandpaper suited to the surface. Remove dust and apply wood primer to bare timber repairs or the primer stated by the coating system. Fine, low-movement joints around trim may be better finished with paintable decorators caulk.
Putty Fillers FAQ's
Only if the packaging specifically approves exterior use. Outdoor repairs need a filler that can cope with weather exposure and the movement of the chosen substrate.
Drying time depends on depth, temperature, humidity and product type. Follow the stated time and do not sand until the repair is firm throughout.
Remove loose material and follow the product's maximum depth guidance. Some fillers should be built up in layers, with each layer allowed to dry before the next.
Porous or bare repairs can absorb paint differently from the surrounding surface. Use the primer or sealing method recommended by the filler and paint manufacturers.