Crommelin Buyer's Guide — TradieCart
Australian-made waterproofing and sealing products trusted by tradies for over 65 years. From under-tile membranes to concrete sealers, pond sealers and roof coatings, Crommelin covers the full job.
Product Range
| Product | Best For |
|---|---|
| Wetite | The go-to SBR under-tile waterproofing membrane for bathrooms, laundries, and wet areas. AS4858 Class III compliant. Available in Green (15L). |
| Wetite Rapid | Rapid-drying version of Wetite — waterproof and tile the same day on smaller jobs. Ideal when time is tight. Available in Green and Grey. |
| Cemproof Flex 1P & Ultra Flex 300 | Cementitious waterproofing membranes. Flex 1P is single-component (just add water) — cost-effective for standard wet areas. Ultra Flex 300 is a two-component system for higher-performance applications. |
| Tile on Tile Primer | Non-porous surface primer for waterproofing or tiling over existing tiles, glass, and glazed surfaces. Essential prep coat for renovation jobs. |
| Membryl & Fibroseal | External waterproofing systems for roofs and walls. Membryl is an elastomeric membrane with 33+ years of proven performance. Fibroseal is a primer-and-topcoat system for metal and concrete roofs. Available in White, Off-White, and Gull Grey. |
| Bitflex | Bitumen-based waterproofing membrane for below-grade, retaining walls, and planter boxes. A cost-effective option for non-exposed waterproofing. |
| Pond Sealer | Purpose-built seamless membrane for fish ponds, water features, and fountains. Available in Black, Blue, Sandstone, and Clear in 1L, 4L, and 15L. |
| Enhance Gloss | Wet-look concrete and paving sealer for driveways, patios, and commercial floors. The most popular Crommelin sealer. |
| Enhance Colours | Tinted concrete sealers for a coloured finish on driveways, paths, and pavers. Mix with Enhance Gloss or Satin. 7 shades: Light Grey, Mid Grey, Dark Charcoal, Basalt, Burnt Clay, Warm Sand, and Light Limestone. |
| Enhance Satin, Penetrating & WB | Natural-finish concrete sealers — Satin for a subtle sheen, Penetrating for invisible protection, WB for water-based convenience. Available in 15L and 200L. |
| Next Day Sealer WB & SB | Seals fresh concrete from just 24 hours. WB (water-based) doubles as a curing compound. SB (solvent-based) provides a harder-wearing finish for high-traffic areas. |
| Hybrid MS PU Sealant | Flexible polyurethane construction sealant and adhesive. Bonds to most building materials — ideal for expansion joints, cladding, and general sealing. 600ml sausage. |
| Polyfab & Powerflex | Waterproofing accessories — Polyfab reinforcing bandage for joints and corners, Powerflex rubber polymer additive for flexible cement renders. |
| Silicone WP Plus | Neutral cure wet area silicone for bathrooms, kitchens, and pools. Available in Grey, White, and Translucent. |
Crommelin also stocks Barricade anti-graffiti coatings (3S, NS, and the PU-NS system with primer, topcoats, and colour tints), specialist surface sealers (Stain Repel, Limestone, Rammed Earth, Slate, and Silane Treatment Si), commercial floor coatings (WB 2K Epoxy, Rocfloor, PU51, Gecko Polyaspartic, and Lithium Densifier), Timber Restorer & Sealer, Elastoseal HD & TR membranes, and cleaning and prep products (HD Cleaner, Efflorescence Remover, Solvent, and Slip Resistant Additive).
Quick Recommendation Guide
- Standard bathroom or laundry waterproofing → Wetite — proven SBR membrane, AS4858 Class III
- Need to waterproof and tile the same day → Wetite Rapid — cuts drying time significantly
- Waterproofing over existing tiles in a renovation → Tile on Tile Primer first, then Wetite or Wetite Rapid over the top
- Sealing a new concrete driveway or patio → Next Day Sealer WB after 24 hours, then Enhance Gloss for a wet-look finish
- Want concrete protection without changing the look → Enhance Penetrating — invisible stain and water protection
- Want a coloured concrete finish → Enhance Colours — 7 shades to mix with Enhance Gloss or Satin
- Sealing a fish pond or water feature → Pond Sealer — purpose-built, available in Black, Blue, Sandstone, or Clear
- Leaking roof or exterior wall → Membryl — flexible, UV-stable, and proven for 33+ years
- Need a flexible construction sealant → Hybrid MS PU Sealant — bonds to most building materials
Common Questions
Wetite or Wetite Rapid — which should I use? — Wetite is the standard choice for most wet area jobs. Choose Wetite Rapid when you need to waterproof and tile on the same day, or when drying conditions are poor.
When do I need Tile on Tile Primer? — Whenever you're waterproofing or tiling over a non-porous surface like existing tiles, glass mosaic, or glazed ceramics. It creates the bond needed for membranes and adhesives to grip.
What's the difference between Enhance Gloss, Satin, and Penetrating? — Gloss gives a wet-look finish, Satin provides a subtle sheen, and Penetrating soaks in without changing the surface appearance. All protect against stains and water.
What colours does Enhance Colours come in? — 7 shades: Light Grey, Mid Grey, Dark Charcoal, Basalt, Burnt Clay, Warm Sand, and Light Limestone. Mix with Enhance Gloss or Satin to create a tinted concrete finish.
Can I use Pond Sealer in a fish pond? — Yes. Crommelin Pond Sealer is specifically designed for fish ponds and water features. It creates a seamless, non-toxic membrane. Available in Black, Blue, Sandstone, or Clear.
How soon can I seal fresh concrete? — Next Day Sealer WB can go on from 24 hours after pour. It also acts as a curing compound, so you protect and seal in one step. For a harder-wearing finish on high-traffic areas, use Next Day Sealer SB.
Can I use Cemproof Flex 1P instead of Wetite? — Yes, for under-tile waterproofing. Cemproof Flex 1P is a cementitious option — just add water, no Part 2 needed. It's a cost-effective alternative, especially if you prefer a cementitious system.
Is Membryl suitable for flat roofs? — Yes. Membryl is designed for roofs, walls, and parapets. It stays flexible and UV-stable long term, with over 33 years of proven performance on Australian buildings.
Why Choose Crommelin?
- Specialist waterproofing and sealing brand — it's all they do, and they've done it since 1957
- Every product is designed and made in Australia for Australian conditions
- Full system coverage means fewer brands on site — membranes, primers, sealers, silicones, and accessories
- Trade sizes and bulk options for large commercial and residential projects
- Same-day Metro Melbourne delivery available through TradieCart