Sika Greenstreak Leakmaster LV-Z 320ml Cartridge 529563

Leakmaster LV-Z is a single component water-swelling sealant with excellent and unique properties. Leakmaster may be applied in locations where conventional solid sealants cannot be easily applied. The rubber-like elasticity of the material and expansion characteristics create an effective watertight seal.

Easy application - general-use caulking guns
Better physical properties than those of conventional sealant.
Swells approximately 2 times in volume

$59.39

Availability: In stock ( 23 Available )

SKU

21232

Details

Professional Application Guide

Sika Greenstreak Leakmaster LV-Z is a one-component, moisture-cure water-swelling sealant specially formulated for challenging waterproofing applications. Ideal for irregular joints, rough surfaces, and difficult penetrations where conventional sealants cannot be easily applied.

After curing, Leakmaster LV-Z exhibits excellent physical properties with rubber-like elasticity. The unique water-swelling mechanism expands approximately 2 times in volume when exposed to water, creating an effective watertight seal without losing flexibility.

Pro Tip from Our Technical Team

For comprehensive concrete joint waterproofing systems, consider pairing Leakmaster LV-Z with Sika Greenstreak Hydrotite waterstops for complete below-grade protection in high-hydrostatic pressure applications.

Key Performance Benefits

Easy application - Works with standard caulking guns
Water-swelling technology - Expands 2x volume for superior sealing
Superior physical properties - Better than conventional putty sealants
Rubber-like elasticity - Maintains flexibility after expansion
One-component system - No mixing required
Moisture-cure formula - Cures in presence of water

Technical Specifications

Property	Value	Test Method
Extrudability	< 20 seconds	In-house test (25°C)
Slump Resistance	< 10 mm	1 hour test (25°C)
Swelling Property	85-200% volume increase	2 days immersion (25°C)
Application Temperature	41°F to 104°F (5°C to 40°C)	Standard conditions
Package Size	320ml cartridge	24 cartridges/carton
Shelf Life	12 months	Store below 90°F (32°C)

Primary Applications

Vertical joints in cast-in-situ concrete
Rough surface bonding before construction joint installation
Precast concrete waterproofing applications
Irregular-shaped joints where conventional sealants fail
Odd penetrations and difficult access areas
General waterproofing in below-grade structures

Application Guidelines

Installation Steps

Break moisture-proofing aluminum foil on cartridge top
Cut nozzle at appropriate position (5x20mm or 10x20mm opening)
Set cartridge in standard caulking gun
Apply continuously without breaks to area being sealed

Important Precautions

Surface must be dry during application
Maintain minimum 100mm concrete coverage on both sides
Not suitable for potable water contact
Do not apply to external or surface positions

Frequently Asked Questions

How much does Leakmaster LV-Z expand when exposed to water?

Leakmaster LV-Z expands approximately 2 times its original volume (85-200%) when exposed to water, creating an effective compression seal.

Can this be applied to wet surfaces?

No, surfaces must be dry during application. The product is moisture-cure, meaning it cures in the presence of humidity but requires dry application conditions.

What makes this different from conventional sealants?

Unlike conventional sealants, Leakmaster LV-Z can be applied to irregular shapes and rough surfaces, provides superior physical properties after curing, and actively swells to create better sealing when exposed to water.