SIF SI20-DS Densifier –5L
Key Benefits
Densifies and strengthens concrete internally
Reduces dusting and surface degradation
Repels water and limits water-based staining
Minimises efflorescence and organic growth
VOC-free and environmentally safe
Made for long-term performance in exposed and high-traffic environments
Free Standard Delivery
ORDERS $299+
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| size: 5L |
| Brand: SIF |
SIF
Selected by Sealix for reliable performance, practical application and proven results.
Want tougher, longer-lasting concrete? Start from the inside out.
SI20-DS is a penetrating silicate densifier that chemically reacts within concrete’s capillary structure to form a harder, more durable matrix. The result? Concrete that’s stronger, dustproof, and more water-resistant — without forming a surface film.
Perfect for warehouse floors, driveways, patios, garage slabs, and new commercial pours, this product is your go-to when:
You need long-term durability and abrasion resistance
You want to reduce dusting and surface softening
You’re prepping for polishing or sealing
You want a breathable finish with no surface coating
Note: This is not a surface sealer. It hardens and seals from within, allowing vapour to escape.
🧱 Where It Works Best
Internal & external concrete
Smooth or broomed finishes
Polished concrete prep
Driveways, garages, car parks, industrial floors
New concrete (post-cure only)
🛠️ Application Tips
Prep is critical
Clean the surface completely (no dust, grease, or coating).
Concrete must be porous—do the water drop test: if water beads for over 2 mins, porosity is too low.
Use clean gear
Apply with a low-pressure sprayer, then spread with a broom or mop.
Work wet-on-wet for multiple coats. Avoid pooling.
Don’t rush drying
Any excess must be removed before drying. Dried residue will require grinding or sanding.
Avoid foot/vehicle traffic for 24 hours. Full cure in 7 days.
Weather matters
Ideal temp: 5–30°C
Avoid application if rain is forecast within 24 hours.
Overspray caution
Wipe any overspray off metal, glass or paint immediately. SI20-DS is alkaline.
⚠️ Important Notes
SI20-DS may slightly darken some surfaces.
It reduces porosity but does not block stains from long contact — clean spills promptly.
Not suitable for non-porous or burnished concrete.
🧪 Product Info
Size: 20L
Appearance: Clear liquid
VOC: Zero
Clean-up: Water
Coverage: Approx. 6–8 m² per litre (depending on porosity)
Made in Australia