Sika Sikacryl 620 Fire
Sika Sikacryl 620 Fire
📋 Product specifications are for reference only.
All product details should refer to the official manufacturer documents. For official product data sheets or technical enquiries, please contact us via WhatsApp.
Sikacryl 620 Fire — Fire Resistant Acrylic Sealant
Sikacryl 620 Fire is a one-component water-based acrylic sealant designed for fire-resistant linear joint sealing in walls and floors. It provides up to 4 hours of fire resistance (EN 1366-4), is over-paintable, requires no primers, and carries CE marking with European Technical Assessment certification.
Key Features
- Up to 4 hours fire resistance (EN 1366-4)
- Water-based, low VOC (GEV-Emicode EC1PLUS)
- Over-paintable
- No primers or activators required
- Good adhesion to a wide range of substrates
- Service temperature: wide temperature range (dry)
- CE marked, ETA 20/1115 certified
- LEED v4 EQc 2 conformity
Applications
- Fire-rated wall joint sealing
- Fire-rated floor joint sealing
- Linear joint fire stopping between fire compartments
- Pipe and cable penetration perimeter fire sealing
- Fire joints on porous substrates (concrete, brick, morite)
- Fire joints on non-porous substrates
⚠️ Not suitable for floor joints, sanitary joints, natural stone, or civil engineering applications. Not for joints under water pressure or permanent immersion.
Technical Data
| Property | Value |
|---|---|
| Chemical Base | 1-part acrylic dispersion (water-based) |
| Fire Resistance | Up to 4 hours (EN 1366-4) |
| Density | ~ |
| Service Temperature | wide temperature range (dry) |
| Application Temperature | wide temperature range |
| Skin Time | ~@ / RH |
| Curing Rate | ~2mm / 24 hours @ / RH |
| Colour | White, grey |
| Packaging | 600ml foil pack (12/box) · 300ml cartridge (12/box) |
| Shelf Life | 24 months (unopened, original sealed, wide temperature range) |
FAQ
What fire rating does Sikacryl 620 Fire achieve?
Up to 4 hours fire resistance when tested to EN 1366-4. The actual fire rating depends on joint dimensions and system design — refer to the Sika Passive Fire Protection Handbook for details.
Can it be painted over?
Yes. Sikacryl 620 Fire is over-paintable once cured. A compatibility pre-test is recommended to ensure paint adhesion.
Is a primer required?
No. Sikacryl 620 Fire adheres directly to clean, dry substrates without primers or activators.
