Toupret Fill-Flex Sealer for Gaps & Cracks
Hazard informationNot classifiedcontains a sensitiser (EUH208), safety data sheet available on request (EUH210)
Hazard information
Not classified as hazardous under CLP Regulation (EC) No 1272/2008. No hazard pictogram or signal word applies. The label carries the following statements:
- EUH208 — Contains 1,2-benzisothiazol-3(2H)-one, reaction mass of 5-chloro-2-methyl-2H-isothiazol-3-one and 2-methyl-2H-isothiazol-3-one (3:1), 2-methylisothiazol-3(2H)-one. May produce an allergic reaction.
- EUH210 — Safety data sheet available on request.
Read the label and the Safety Data Sheet before use. The SDS is in the Datasheets section on this page. Hazard information taken from the manufacturer's Safety Data Sheet, revision 25.09.2025.
Fill-Flex is a ready-to-use flexible filler for the gaps and cracks that keep coming back — skirting, architraves, staircases, and any junction where two materials move against each other. A rigid filler splits again at the first cold snap; Fill-Flex has a fibre-reinforced flexible formula that moves with the substrate instead of cracking off it.
This is the 310ml cartridge, for a standard applicator gun. It is the format for long linear joints — skirting to wall, architrave to plaster, staircase strings, and anywhere a knife is awkward to get into. For filling holes and wider areas, the same filler is stocked as a 1kg tub.
It is a filler, not a caulk. That is the distinction worth understanding: decorator's caulk is a sealant that shrinks back and can only be run thin, whereas Fill-Flex can be built up to 1cm, holds its shape, and takes paint over it properly.
The one thing to know before you use it. Flexible fillers do not sand well — the surface fluffs and rolls rather than cutting back. Strike it off flush while it is still wet and finish it with a wet finger or a damp cloth. Trying to sand it flat once dry is the usual reason people are disappointed with an otherwise excellent filler.
It adheres to existing paintwork with no need to spot prime, and works inside and out.
Surface condition - Interior / Exterior
Task - Filling and repairing (holes, gaps, cracks)
Application method - Cartridge and applicator gun
Surfaces - Cement, concrete, cellular concrete, breeze blocks, bricks, stone, gypsum plaster, plasterboard/drywall lining, old painted surfaces, primed wood
Overcoat with - Any type of paint. Any type of Toupret filler.
Maximum recommended application thickness - Up to 1cm
Mixing rate - Ready to use
Ready to paint time - 24 to 48 hours
Working time - No limit
Recommended conditions - Do not apply below 5°C or above 35°C, or at relative humidity over 80%
Adhesion - Adhesion filler/substrate (EN 16-566): > 0.8 MPa
IAQ (Indoor Air Quality) classification - A+
Colour when dry - White
Clean tools with - Water
Pack size - 310ml cartridge
Ireland & Northern Ireland — 1–3 working days. Charged by total order weight, VAT included:
- Up to 30 kg — €6.99, or free on orders over €85
- 30–60 kg — €13.99
- 60–100 kg — €27.99
- Over 100 kg — pallet delivery €49.99
Great Britain — 2–4 working days. €13.95 up to 30 kg, then €27.90, €55.90 and €99.90 by the same weight steps. There is no free delivery to Great Britain.
Rest of Europe — non-liquid items only, from €11.75, priced by destination and weight at checkout. Paint and other liquids ship to Ireland, Northern Ireland and Great Britain only.
Dispatch and collection — order before 12pm Monday to Friday and it ships the same day. Click & collect at Ballymount, Dublin 12 is free and often ready within the hour.
Returns — 14 days to change your mind and 14 more to send it back. Tinted paint is non-returnable once mixed.
