Legion Flexible Gap Filler 480g White – Paintable Acrylic Gap Sealant

Paintable Acrylic Gap Filler for a Neat, Crack-Free Finish

Legion Flexible Gap Filler is a water-based acrylic gap sealant made for filling gaps and cracks around the home for a clean, tidy finish. It is ideal for the usual jobs that show up before painting: gaps around skirting boards, cornices, architraves, and window and door frames. The white, flexible formula fills the gap, dries to a firm finish and can be painted over, so the repair disappears into the surface.

Flexible Formula That Moves With the Building

Buildings move a little with heat, cold and settling, and a rigid filler tends to crack where a gap flexes. This filler is made to cope with that movement, staying flexible so the finish resists cracking over time. That makes it well suited to spots that expand and contract slightly, such as around window frames, doorways and skirtings, where you want the fill to stay put and keep looking neat.

Paintable and Easy to Apply

The 480g cartridge loads into a standard caulking gun, so application is quick and controlled. You cut the nozzle to the width you need, run a bead into the gap, smooth it off, and wipe away the excess. Being water-based, it is low odour and cleans up with water before it cures, which makes it easy to work with for both trade and DIY. Once cured, it takes paint, so you can match it to skirtings, walls or trim for a seamless result.

Where to Use It

This gap filler suits a range of common surfaces, including plasterboard, timber, brick, aluminium, benchtops, ceramic tiles and painted surfaces. It is best thought of as a paintable gap and crack filler for general interior work and sheltered exterior gaps. For areas that are constantly wet or need a fully waterproof seal, such as around a bath, shower or basin, a silicone sealant is the more suitable choice, as acrylic fillers are made for gap filling rather than wet-area sealing.

Key Features & Benefits

• Water-based acrylic gap filler in white
• Flexible formula that resists cracking as the building moves
• Paintable once cured for a seamless finish
• Fits a standard caulking gun for controlled application
• Low odour and cleans up with water before curing
• Suits plasterboard, timber, brick, aluminium, tiles and painted surfaces
• Handy 480g cartridge for trade and DIY

Product Details

• Product: Legion Flexible Gap Filler
• Type: Water-based acrylic gap sealant
• Colour: White
• Size: 480g cartridge
• Application: Standard caulking gun
• Finish: Flexible, paintable
• Suitable surfaces: Plasterboard, aluminium, brick, wood, benchtops, ceramic tiles, painted surfaces
• Brand: Legion

How to Use

Make sure the surface is clean, dry and free of dust and loose material. Cut the cartridge nozzle to the width of the gap and load it into a caulking gun. Run a steady bead along the gap, then smooth it off with a wet finger or a filling tool for a neat line, and wipe away any excess with a damp cloth before it sets. Allow it to cure, then paint over it if needed. Clean tools and hands with water before the filler dries.

Frequently Asked Questions

What is this gap filler used for?
It fills gaps and cracks around skirting boards, cornices, architraves, and window and door frames, giving a neat, paintable finish before decorating.

Is it paintable?
Yes. Once cured, this water-based acrylic filler can be painted over, so you can match it to your walls, skirtings or trim.

Can I use it in bathrooms and kitchens?
It is fine for general gaps in these rooms, but for areas that stay wet or need a waterproof seal, such as around a bath, shower or basin, a silicone sealant is the better option.

How do I apply it?
Cut the nozzle, load the cartridge into a standard caulking gun, run a bead into the gap, smooth it off and wipe away the excess with a damp cloth.

What surfaces does it suit?
It is suitable for plasterboard, aluminium, brick, timber, benchtops, ceramic tiles and painted surfaces.

How do I clean up?
Being water-based, it cleans up with water before it cures, so wash tools and hands while the filler is still wet.

Where can I buy acrylic gap filler in Australia?
It is available online from BPG Supplies, with shipping across Australia and local pickup in Bonnyrigg, NSW.