Pool System Build-Up
- 1 Concrete Substrate
- 2 Crack Repair (if required)
- 3 ACTFLEX FLEXPLUS
- 4 ACTFLEX HYDROPLUG
- 5 ACTFLEX AT MESH
- 6 ACTFLEX 988 CWP (2 Coats)
- 7 Tile Adhesive
- 8 Pool Finish
Crack Lock E400L Low Viscosity Epoxy Crack Repair
or 4 interest-free payments with
Ultra-low viscosity injection epoxy for hairline cracks from 0.05 mm. 100 to 500 cps, 80.5 MPa compressive.
CRACKLOCK E400L is a two-part, 100% solids, solvent-free injection epoxy for the finest cracks, 0.05 mm to 3 mm, in concrete and masonry. At 100 to 500 cps it wicks deep into the crack and rebuilds structural continuity instead of just sealing the surface. 400 mL dual cartridge, 3:1, static mixing nozzle.
Where to use it
- Pressure injection or gravity feed into horizontal concrete and masonry cracks 0.05 mm to 3 mm wide
- Port injection of fine vertical cracks in the FORSPEC epoxy injection procedure
- Binder for epoxy mortar patching and interior overlays with aggregate
Why waterproofers buy it
- 100 to 500 cps. Gets into hairline cracks that paste-grade adhesives cannot enter
- 80.5 MPa compressive, 70.3 MPa flexural, 34.6 MPa tensile. Shrinkage on cure 0.01%
- Self-levelling on gravity feed, fills the crack section without working
- Gel time 30 to 40 minutes. Grind, coat or return to full traffic at 24 hours. Full cure 7 days
- 10 year Forspec product warranty
Coverage
A 400 mL cartridge runs about 40 m on a 1 x 10 mm crack or 8.9 m at 3 x 15 mm.
Not for
Cracks over 3 mm (use CRACK PRO 1200PS, or PROBOND 1100 for 3 to 20 mm), damp, wet or frosted substrates, concrete under 28 days old, below 5°C or above 35°C, drinking water, or waterproofing. Condition to 18 to 29°C first. Never dilute.
Full cure at 24°C.
Ultra-low 100-500 cps viscosity penetrates hairline cracks from 0.05 mm
80.5 MPa compressive and 70.3 MPa flexural strength
100% solids and solvent-free, with shrinkage on cure of 0.01%
7-Day Money BackGuarantee
Fast DispatchNext Business Day
Expert Advice(02) 8021 3517
Secure CheckoutSSL Encrypted
Get it
—
—
Pickup available at The Waterproofing Shop
Usually ready in 24 hours
Crack Lock E400L Low Viscosity Epoxy Crack Repair
The Waterproofing Shop
22/872 Canterbury Road
Roselands NSW 2196
Australia
Product Details
How to Use
Technical Specifications
Crack Lock E400L Low Viscosity Epoxy Crack Repair
Sale price$110.00
Frequently bought together
System Build-Up Guide
Correct application makes all the difference.
Retaining Wall System Build-Up
- 1 Concrete Substrate
- 2 Crack Repair (if required)
- 3 ACTFLEX MS PRO
- 4 ACTFLEX AT MESH
- 5 ACTFLEX 988 CWP (2 Coats)
- 6 Protection Board (Optional)
- 7 Drainage System
- 8 Backfill
Tank System Build-Up
- 1 Concrete Substrate
- 2 Crack Repair (if required)
- 3 ACTFLEX FLEXPLUS
- 4 ACTFLEX AT MESH
- 5 ACTFLEX 988 WMP (2 Coats)
- 6 Protective Coating (Optional)
- 7 Water
Technical overview
Key applications
- Structural crack repair by pressure injection and gravity feed in horizontal concrete and masonry, 0.05 mm to 3 mm crack width
- Port injection repair of fine vertical cracks within the FORSPEC epoxy injection procedure
- Deep penetration into fine cracks and voids to restore structural integrity
- Epoxy mortar patching as a binder with aggregate
- Durable interior surface overlays when combined with aggregate
- Industrial and commercial repairs - warehouses, bridges, tunnels and infrastructure
- Controlled environments where low-VOC materials are required
Surface suitability
- Concrete (minimum 28 days old, clean, sound, completely dry and mechanically profiled)
- Masonry (clean, dry and free of dirt, dust, laitance, curing compounds, oils, grease, wax, sealers and coatings)
Not a waterproofing membrane. Not for cracks wider than 3 mm - specify CRACK PRO 1200PS, or PROBOND 1100 for 3-20 mm. Not for application to damp, wet or frosted substrates; the crack and the environment must be completely dry. Not for new concrete less than 28 days old. No potable water claim is made, so do not specify it for contact with drinking water. Do not apply below 5C or above 35C substrate and ambient temperature, and below 21C condition the product to 21-24C before use. Condition the material to 18-29C before use, because cold product thickens and loses the low viscosity the product depends on. Do not dilute, extend, re-temper or add solvent under any circumstances. Do not leave a partially used cartridge with a loaded static mixer. Surface overlay use is restricted to interior surfaces and epoxy mortar thickness must not exceed 70 mm per layer.
Technical Specifications
| Product Type | Two-component, 100% solids, solvent-free structural injection epoxy |
| Mixing Ratio | 3:1, Part A to Part B |
| Colour | Clear to light amber |
| Packaging | 400 mL dual cartridge |
| Viscosity | 100-500 cps at 25C* |
| Tensile Strength | 34.6 MPa (ASTM D638-14)* |
| Compressive Strength | 80.5 MPa (ASTM D695-15)* |
| Flexural Strength | 70.3 MPa (ASTM D790-17)* |
| Shrinkage on Cure | 0.01%* |
| Gel Time | 30-40 minutes* |
| Tack Free Time | 3-5 hours* |
| Mechanical Grinding | 24 hours |
| Coating with Paint or Architectural Coatings | 24 hours |
| Return to Full Traffic | 24 hours |
| Full Cure | 7 days at 24C* |
| Crack Width Range | 0.05-3 mm |
| Groove Preparation | 3 mm width, minimum 1 mm depth |
| Conditioning Before Use | 18C to 29C |
| Application Temperature | +5C to +35C |
| Service Temperature After Curing | -7C to +50C |
| Shelf Life | 24 months unopened, stored at 5-35C |
| * Typical Forspec R&D characteristic values | |
Real Projects. Real Results.
-
Before
After
Pool Renovation
Gold Coast, QLD
-
Before
After
Below Ground Retaining Wall
Sydney, NSW
-
Before
After
Concrete Water Tank
Perth, WA
-
Before
After
Commercial Podium
Melbourne, VIC
-
Before After
Swimming Pool Construction
Brisbane, QLD
Watch the install
Step-by-step from prep to top coat. Filmed on the tools, not in a studio.
The Waterproofing Shop?
We supply premium waterproofing products backed by expert advice, fast service and real-world experience.
100% AustralianOwned & Operated
30+ Years in theWaterproofing Industry
Thousands of Productsin Stock
Fast ShippingAustralia Wide
Expert TechnicalSupport
Frequently asked questions
-
What is Crack Lock E400L used for?
CompatibilityCrack Lock E400L is a low-viscosity epoxy for hairline crack repair, small void filling, and structural reinforcement in driveways, slabs, walls, and structural elements. Penetrates cracks from 0.05mm to 3mm wide.
-
What's the cured strength?
PerformanceCrack Lock E400L achieves 80.5 MPa compressive strength (ASTM D695-15) - one of the highest-strength injection resins in the Forspec range. Restores or exceeds parent concrete strength.
-
Why the ultra-low viscosity?
InstallationViscosity 100-500 cps at 25°C - so thin it wicks into hairline cracks where higher-viscosity epoxies can't penetrate. Critical for deep penetration into structural microcracks.
-
Mix ratio and application?
Compatibility3:1 mix ratio. Tack-free in 30-40 minutes at 23°C, full cure approximately 3 hours at 24°C. Apply at 5-35°C ambient. 100% solids, solvent-free, waterproof when cured.
-
Shelf life?
Performance24-month shelf life when stored sealed. Service temperature -7°C to +50°C once cured. Impermeable when cured - sealed cracks become permanent.