STAIN-PROOF® 40SK Densifier + Water Repellent is a deep-penetrating, invisible sealer that consolidates (densifies) and protects concrete, limestone, sandstone, brick, and grout. Provides permanent water repellency and superior protection against salt spalling, freeze-thaw, and efflorescence. Ideal for pool surrounds, facades, driveways, and salt-exposed areas.

Why Choose 40SK?

• Densifies & protects porous materials like limestone, concrete, and sandstone

• Permanent water repellency – no reapplication needed

• Protects from salt spalling, freeze-thaw cycles, efflorescence

• Retains natural surface color – no visible film

• Breathable – prevents internal moisture buildup

• Excellent for pool decks, driveways, marine zones, and winter-treated areas

• 25-year warranty when applied by a certified applicator

Applications:

• Facades, patios, walkways, garages, kitchens

• Pool surrounds, dry-stamped pavers, composite stone

• Great for residential, commercial, coastal, and freeze-prone areas

Instructions:

1. Apply to clean, dry surface using a sprayer or roller

2. Allow to soak into surface — no rinsing required

3. Cures within 24–48 hours

4. Apply appropriate safety gear for indoor use