Pereseal AF Anti-Fungal Bathroom & Kitchen Silicone Sealant

Pereseal AF is a neutral-cure silicone with fungicide built in, made for bathrooms and kitchens that stay warm and damp. It cures to a flexible, waterproof seal around baths, showers, basins, sinks and worktops.

TÜV SÜD PSB tested it against the HDB sanitary sealant specification in 2017. After 28 days at 29 °C and over 95% humidity with five mould species, the samples showed no growth at all (ISO 846). Bleach and urine spot tests left it unmarked, and it didn't stain.

Neutral cure means no vinegar smell and no attack on metal fittings or stone. The fungicide keeps mould off the sealant itself; a joint that never dries still needs airing and regular cleaning.

Standards and tests

• Tested by TÜV SÜD PSB to the HDB sanitary sealant specification (report 7191168557-MEC17-ED, 2017)
• ISO 846 fungal resistance: no growth after 28 days, strong fungistatic effect
• ANSI Z124.3 stain resistance: unaffected by household bleach and urine
• ASTM C510: no staining or colour change
• ASTM C719: no bond loss under cyclic movement
• ASTM C793: no cracking after 250 hours of accelerated weathering

Good to know

• Not for aquariums: use Pereseal 802
• Not for copper
• Not for paint coatings
• Not for polycarbonate or acrylic sheet under tension
• Joints from 3 mm × 3 mm up to 30 mm wide; tool within 5 minutes