Filler

This article is all about common fillers used for DIY applications.

Decorating filler

The classic example of this is "Polyfiller" a powdered plaster like filler that is mixed and applied. Sets to a hard long lasting finish that may be sanded to achieve a very smooth finish.

• Does not shrink much as it dries
• Sands well
• Takes paint and other finishes well
• Not flexible
• Not waterproof
• tough enough to put wallplugs into

Decorators Caulk

A ready mixed acrylic water based filler that is ideal for filling difficult corners and cracks when decorating. Easy to work, and good for joints that may be subject to vibration and movement (e.g. along skirtings, door frames, into corners etc). Can be used to hide slight gaps between some sheets of wallpaper.

• Dries quickly and can be overpainted
• Can be removed with damp sponge while wet
• remains slight flexible to accommodate movement.
• Can't be sanded - must be tooled smooth when wet
• Shrinks a bit on curing, so not good for filling holes in walls.

Wood filler

Standard wood filler is an acrylic based mixture that's weaker than chipboard. If used in bulk the filler shrinks and cracks.

Linseed putty can be used as a harder tougher wood filler, but setting is extremely slow, and the filler must be undisturbed while it gradually sets.

Car body filler (polyester resin) is a tough durable quick setting filler used where good strength and prompt setting are necessary.

See Also

• Putty & Mastic
• Wiki Contents
• Wiki Subject Categories