FORSPEC FORZAPRIME Bituminous Primer 20L solvent-based primer for torch-applied bituminous waterproofing membranes, suitable for concrete, masonry, and metal surfaces.

FORZAPRIME Bitumen Primer 20kg

Name: FORZAPRIME Bitumen Primer 20kg
Brand: Forspec Protective Coatings
SKU: FFOT13
Price: 264.00 AUD
Availability: InStock

$264.00

or 4 interest-free payments with

The FORZAFLEX torch-on primer. One coat, dry in about an hour on smooth concrete, so the membrane goes down the same day.

FORZAPRIME is a solvent-based bitumen primer that bonds torch-applied membranes to concrete, masonry and metal. It soaks into porous substrates, binds surface dust and fines, and leaves a uniform bitumen key for FORZAFLEX BASE 3mm, MINERALE 4.5 and RR to weld to. Brush, roller or low-pressure spray.

Where to use it

Under FORZAFLEX BASE 3mm, FORZAFLEX MINERALE 4.5 and FORZAFLEX RR
Roof slabs and decks, podium slabs and balconies
Retaining walls, foundations, lift pits and below-ground structures
Metal substrates before membrane installation

Why waterproofers buy it

The specified primer for the FORZAFLEX torch-on system
Dries on smooth surfaces in about 1 hour, so the membrane can follow the same day
One coat at 4 to 6 m² per litre
12 months shelf life unopened
10 year Forspec product warranty

Coverage

0.15 to 0.25 L/m² depending on porosity, or 4 to 6 m² per litre, one coat. A 20 L pack covers about 80 to 120 m². Porous, textured decks use a lot more.

Not for

Waterproofing on its own, moisture barrier duty or hydrostatic pressure. Do not torch until it is fully dry: wet primer ignites. Never speed drying with heat or a torch. Not over uncured concrete, damp surfaces, dust, laitance, oil or curing compounds. Do not let it pond or dilute it without written Forspec approval. Apply between 5 and 35°C.

Drying time at 25°C and 50% RH.

The specified primer of the FORZAFLEX torch-on waterproofing system

Dries on smooth surfaces in about 1 hour, so the membrane can follow the same day

One coat on concrete, masonry or metal at 4-6 m2 per litre

Quantity: 1

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Pickup available at The Waterproofing Shop

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FORZAPRIME Bitumen Primer 20kg

The Waterproofing Shop

Pickup available, usually ready in 24 hours

22/872 Canterbury Road
Roselands NSW 2196
Australia

+61280213517

Product Details

FORZAPRIME is a high-performance waterproofing primer designed to improve adhesion and surface preparation before installing torch-applied waterproofing membranes. It penetrates porous substrates, seals surfaces, and binds dust to create a strong and reliable bonding surface for professional waterproofing applications.

Key Features

Seals porous concrete and masonry surfaces
Binds surface dust and loose particles
Enhances membrane adhesion
Easy application by brush, roller, or spray
Fast-drying formulation
Improves waterproofing system performance
Suitable for commercial, industrial, and residential projects

Recommended Applications

Concrete surface preparation
Masonry substrate priming
Roof waterproofing systems
Balconies and terraces
Below-ground waterproofing
Torch-applied membrane installations

Ideal for preparing surfaces and improving adhesion in professional waterproofing systems.

How to Use

Apply one even coat by brush, roller or low-pressure spray at 0.15-0.25 L/m2Confirm the substrate is clean, dry and structurally sound
Remove all dust, laitance, oils, curing compounds, grease and loose material by mechanical means, then vacuum thoroughly
Confirm concrete is fully cured before priming
Confirm no moisture is present on the surface at the time of application
Reinstate defects, voids and blowholes with a FORSPEC concrete repair system such as FORBUILD 100 or FORCRETE 100, finished flush and cured
Protect adjacent surfaces from overspray and splashing before work begins
Stir or shake FORZAPRIME thoroughly before use
Apply evenly at 0.15-0.25 L/m2 depending on substrate porosity
Ensure complete coverage of the surface, as every unprimed patch is a debond waiting to happen under a torched membrane
Avoid ponding and excessive build-up
Work by brush, roller or low-pressure spray equipment where permitted
Allow FORZAPRIME to dry fully before membrane installation, minimum approximately 1 hour on smooth surfaces
Do NOT accelerate drying using heat or a torch
Confirm the primed surface is dry to the touch with no solvent odour before torching begins

Technical Specifications

Product Type: Solvent-based bituminous primer, modified bitumen with fast-evaporating solvents
Colour: Black*
Number of Coats: 1
Application Rate: 0.15-0.25 L/m2, substrate porosity dependent
Coverage: 4-6 m2/L
Drying Time on Smooth Surfaces: Approx. 1 hour minimum at 25C, 50% RH
Drying Time on Porous and Textured Surfaces: Extended, confirm dry on site before torching*
Application Method: Brush, roller or low-pressure spray where permitted
System Compatibility: FORZAFLEX BASE 3mm, FORZAFLEX MINERALE 4.5 and FORZAFLEX RR
Application Temperature: +5C to +35C*
Flash Point: 12C
Auto-Ignition Temperature: Greater than 450C
Relative Density: 1.04-1.07 (water = 1)
Viscosity: 1895.735-6635.071 cSt @ 25C
Solubility in Water: Immiscible
VOC Content: 600 g/L
Hazard Classification: HAZARDOUS CHEMICAL, DANGEROUS GOODS, Poisons Schedule S5
Dangerous Goods (ADG): UN 1263 PAINT, Class 3, Packing Group II
Packaging: To current pack schedule*
Shelf Life: 12 months unopened, stored as specified*
* Typical Forspec R&D characteristic values, no accredited test reports exist for this product

Product Files

FORZAPRIME Bitumen Primer 20kg

$264.00

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System Build-Up Guide

Correct application makes all the difference.

View All Details

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

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

FORZAPRIME is a solvent-based bituminous primer manufactured from modified bitumen, fast-evaporating solvents and adhesion-enhancing additives. It establishes the bond between the substrate and torch-applied bituminous waterproofing membranes, sealing porous surfaces and binding dust and fines into a stable bituminous key across concrete, masonry and metal. It is the specified primer of the FORZAFLEX torch-on system and is compatible with FORZAFLEX BASE 3mm, FORZAFLEX MINERALE 4.5 and FORZAFLEX RR. AS 4654.1 does not apply to the primer itself, which is a system component and not a membrane. No accredited certificate is currently held on file for FORZAPRIME and all performance values are published as typical R&D characteristic values. System compliance is established by the certified FORZAFLEX membrane installed over the primer.

Key applications

Priming ahead of FORZAFLEX BASE 3mm, FORZAFLEX MINERALE 4.5 and FORZAFLEX RR torch-applied membranes
Roof slabs and decks
Podium slabs and balconies
Retaining walls and foundations
Lift pits and below-ground structures
Metal substrates prior to membrane installation
Sealing porous substrates and binding surface dust and fines before membrane installation

Surface suitability

Concrete (fully cured before priming, clean, dry and structurally sound)
Masonry
Metal (primed prior to membrane installation)
Porous substrates (sealed and dust bound before membrane installation)

Not a waterproofing membrane - FORZAPRIME primes, it does not waterproof, and it is not a moisture barrier and not suitable for hydrostatic pressure. FORZAPRIME must be FULLY DRY before torch application of any membrane, because torching over wet primer ignites residual solvent. Do not accelerate drying using heat or a torch under any circumstances. Concrete must be fully cured before priming and moisture must not be present on the surface at the time of application. Do not apply over dust, laitance, oils, curing compounds, grease or loose material without full mechanical rectification. Avoid ponding and excessive build-up, as pooled primer will not dry through and will remain a solvent reservoir beneath the membrane. Do not dilute unless approved in writing by an authorised FORSPEC representative. Apply between +5C and +35C. Protect adjacent surfaces from overspray and splashing, as cured bituminous primer is very difficult to remove. The uncured product and its vapours are combustible, so exclude all ignition sources until fully dry. Classified as a HAZARDOUS CHEMICAL and DANGEROUS GOODS, Poisons Schedule S5.

Technical Specifications

Product Type	Solvent-based bituminous primer, modified bitumen with fast-evaporating solvents
Colour	Black*
Number of Coats	1
Application Rate	0.15-0.25 L/m2, substrate porosity dependent
Coverage	4-6 m2/L
Drying Time on Smooth Surfaces	Approx. 1 hour minimum at 25C, 50% RH
Drying Time on Porous and Textured Surfaces	Extended, confirm dry on site before torching*
Application Method	Brush, roller or low-pressure spray where permitted
System Compatibility	FORZAFLEX BASE 3mm, FORZAFLEX MINERALE 4.5 and FORZAFLEX RR
Application Temperature	+5C to +35C*
Flash Point	12C
Auto-Ignition Temperature	Greater than 450C
Relative Density	1.04-1.07 (water = 1)
Viscosity	1895.735-6635.071 cSt @ 25C
Solubility in Water	Immiscible
VOC Content	600 g/L
Hazard Classification	HAZARDOUS CHEMICAL, DANGEROUS GOODS, Poisons Schedule S5
Dangerous Goods (ADG)	UN 1263 PAINT, Class 3, Packing Group II
Packaging	To current pack schedule*
Shelf Life	12 months unopened, stored as specified*
* Typical Forspec R&D characteristic values, no accredited test reports exist for this product