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Silcor 560 HB Charcoal 22kg pail, GCP Class III polyurethane waterproofing membrane for AS 4654 compliant balconies & wet ...
Silcor 560 HB Charcoal 22kg pail, GCP Class III polyurethane waterproofing membrane for AS 4654 compliant balconies & wet ...
Silcor 560 HB Charcoal 22kg pail, GCP Class III polyurethane waterproofing membrane for AS 4654 compliant balconies & wet ...
Silcor 560 HB Charcoal 22kg pail, GCP Class III polyurethane waterproofing membrane for AS 4654 compliant balconies & wet ...

SILCOR® 560 HB

One-part Class III high-build polyurethane membrane for concealed wet areas, balconies, decks, podiums and protected waterproofing.

Vendor: GCP
SKU: SILCOR560HB/18.9
Availability: In Stock
$255.74
$255.74
Prices do not include GST
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Description  

SILCOR 560 HB is a one-part, high-build Class III polyurethane waterproofing membrane for internal wet areas and protected external applications. Its flexible, fully bonded coating suits prepared horizontal and vertical surfaces.

Waterproofing beneath protective finishes

Use SILCOR 560 HB on suitable balconies, roof decks, podiums, planter boxes and retaining walls, or on bathroom, shower and laundry floors beneath the specified finish. The high-build formulation bridges non-structural shrinkage cracks and accommodates movement in correctly detailed areas.

Protection and system compatibility

560 HB is not a finished, trafficable or permanently exposed membrane. It needs the specified protection, primers and detailing for the project. Exposed turn-ups may require SILCOR Top Coat 75; direct-bonded finishes require a suitable tie-coat system. For horizontal membranes with more exposed-finish options, compare SILCOR 575 LB.

Common Questions  

How flexible is SILCOR 560 HB?
Class III to AS 4654.1 with over 700% elongation; separately Class III to AS 4858 with over 1400% elongation.

When can I flood test or tile over it?
Allow around 48 hours at 23°C and 60% relative humidity before flood testing or topping. Site conditions affect curing.

Can SILCOR 560 HB be left exposed?
No. Cover the membrane with the specified finish. Some exposed turn-up details use SILCOR Top Coat 75.

Can I use it on vertical surfaces?
Yes. The high-build membrane suits prepared horizontal and vertical surfaces.

Uses & Benefits  
One-part, high-build Class III polyurethane membrane for protected internal wet areas, balconies, decks, retaining walls and planter boxes. Suitable for horizontal and vertical application beneath specified protective finishes. Elongation above 700% to AS 4654.1 and above 1400% to AS 4858, both Class III. Approximately 48 hours through-cure at 23°C and 60% relative humidity before flood testing or topping. Not for permanent exposure or use as a finished traffic surface.
How To Apply  
Prepare sound, clean, dry substrates and use the compatible GCP primer for the substrate and moisture conditions. For suitable dry substrates (maximum 5% moisture), SILCOR Primer BS has a minimum initial application rate of 0.3 kg/m². Higher-moisture concrete needs a specified alternative primer. Apply SILCOR 560 HB to the required system-specific dry film thickness and protect the finished membrane with the specified covering. Allow approximately 48 hours through-cure at 23°C/60% RH before flood testing or topping; conditions can extend cure time. Follow the current Australian SILCOR 560 HB and primer data sheets for full detailing, application and curing instructions.
Limitations and Safety Info  
Do not use as a trafficable finished surface. Do not use as an exposed finished membrane. Approved exposed turn-up details may need SILCOR Top Coat 75. Recommended substrate moisture content is below 5%; use the specified damp-concrete primer where required. Concrete and render must meet the project-specific GCP primer and substrate preparation requirements. If the membrane is outside its specified recoat window (typically 12–48 hours at 23°C/60% RH), follow the current Australian SILCOR 560 HB data sheet for preparation and recoat requirements.
Suitable Substrates  
  • Concrete, block and brick.
  • Cement render.
  • Timber.
  • Compressed fibre-cement and GRC.
  • Aerated lightweight concrete.
  • Other stable substrates approved by GCP.

SILCOR® 560 HB Physical Properties

SILCOR® 560 HB Physical Properties
Property Value
Base Chemistry High solids, moisture curing polyurethane
Specific Gravity 1.48 g/ml
Viscosity 60,000 mPa.s
Solid Content 91 %w/w
VOC Content <110 g/L
Min Recoat Time 12 hours
Max Recoat Time 48 hours
Rain Resistant Time 2 hours
Min Through Cure Time 48 hours
Shore A Hardness > 55 °A
Tensile Strength > 5.0 MPa (AS 4858), > 3.0 MPa (AS 4654.1)
Elongation > 1400 % (AS 4858), > 700 % (AS 4654.1)
Classification Class III High Extensibility (AS 4858 / AS 4654.1)
Movement Capability Pass – No fatigue cracking exhibited
Water Vapour Transmission 4.36 g/m²/24h
Water Resistance Pass
Chemical Resistance Pass
Resistance to Detergent Immersion Pass
Heat Aging Pass
Flashpoint >72 °C
Density at 20 °C 1.5 g/cm³

SILCOR® 560 HB - Use Cases

Here are some common examples on where SILCOR® 560 HB used by our customers.

Civil Construction

Retaining Walls & Lift Pits

When waterproofing concrete retaining walls or lift pits prior to backfilling or covering with soil.

SILCOR 560 HB forms a Class III, fully bonded membrane on suitably prepared retaining and lift-pit walls before backfilling. Use it on the positive-pressure side.

  • Class III AS 4654.1-2012
  • >700% elongation
  • >3 MPa tensile strength
  • Pass cyclic movement

Tiling

Internal Wet-Area Floors

For waterproofing internal floors in bathrooms, laundries, and showers, beneath screeds or tiles.

Use SILCOR 560 HB beneath the specified finish on bathroom, shower and laundry floors. It forms a Class III waterproof barrier on suitable prepared substrates.

  • Class III AS/NZS 4858-2004
  • >1400% elongation
  • <110 g/L VOC
  • Pass water immersion

Waterproofing

Balconies & Decks Beneath Pavers

Installing concealed waterproofing on external balconies, rooftops, or decks prior to screeds, pavers, or ballast.

Form a flexible, non-exposed waterproof barrier beneath the specified screed, pavers or ballast. Protect membrane turn-ups and exposed details as required.

  • Class III, AS 4654.1-2012 certified
  • >3.0 MPa tensile (AS 4654.1)
  • Low VOC <110 g/L
  • Cold applied, one-part

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