ANCILLARY · THE SUPPORT
2K TEXTURE COAT
GPFUNC10
A 2K Polyurethane Acrylic high build texture and flex coat, specially formulated to provide high solid on metal, plastic and timber products. It imparts excellent adhesion on various…
SCAN FOR THE FULL RANGE,
APPLICATION GUIDES & VIDEOS
germatech.com.au
TDS v2.3 · ISSUE 02.09.2026
SUPERSEDES 01.2024
REVIEW DUE 07.2028
2 : 2 : 1 : 1 — 2 texture · 2 Germa-Tech 2K colour · 1 hardener · 1 reducer
BY VOLUME
HVLP HVLP 2mm plus tip and 2-3 bar
60 minutes at 20 ˚C*
*ADJUST FOR THE DAY'S TEMPERATURE
15-20 minutes if baking*
SKIP THIS AND YOU GET SOLVENT POP
DISCONTINUED — SHEET AND SDS RETAINED FOR PRODUCT STILL IN THE FIELD
01SUITABLE SUBSTRATES
- Painted surfacers
- Fillers
- Primed surfaces
- Ecoat
- Aluminium
- Metal
- Plastic
- Fibreglass
- Timber
- Concrete
02SURFACE PREPARATION
Remove all loose coatings. Degrease with degreaser prepsol and abrade surface with P120-P180 prior to recleaning/degreasing. Substrate Preparation: Aluminium, bare metal, and galvanized, primer with Germatech Epoxy Primer; Fibreglass and Plastic, prime with Germatech plastic primer; Wood and Concrete, seal with Epoxy Primer or concrete sealer; OEM Ecoat, scuff the surface with Germatech Scotch Bright abrasive pads
03MIXING
| Ratio by volume | 2 : 2 : 1 : 1 — 2 texture · 2 Germa-Tech 2K colour · 1 hardener · 1 reducer |
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| Notes | By Volume (Mixed Paint): 50% Germatech Base 2k topcoat mixed with 50% Texture Coat tintable. Harden paint in ratio of mixed paint 4 : 1 with Germatech MS hardener GP4407std. Reduce mixed paint with addition of up to 1 part 25% GP5107/GP5108 Premium Reducer. Do not reduce if using a Schultz Gun. |
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BEFORE YOU START — THE SYSTEM IS THE PROCESSGerma-Tech abrasives and ancillary products are graded and tested for compatibility with this product and the process on this sheet — that control is what makes any problem on the job assessable and fixable. Once a non-Germa-Tech product has been used at any step, what actually touched the panel can no longer be verified, and issues that arise cannot be fairly assessed — by us or by anyone. Use the system through the whole process, and if something on this sheet does not fit the job,
talk to us before you spray. Refer to the
GERMA-TECH APPLICATION STANDARD.
04APPLICATION
| Pressure — HVLP | HVLP 2mm plus tip and 2-3 bar |
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| Texture gun | Ideal spray with a Schutz Gun or Texture Coat Gun at 40-60psi |
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| Other | Can be cut and rolled with solvent proof texture roller |
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| Coats | 1-3 Coats |
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| Flash-off between coats | 60 minutes at 20 ˚C |
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| Flash-off before bake | 15-20 minutes if baking |
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| Dry film build | total 150-450 µm |
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05DRYING & CURING
| TEMPERATURE | DUST FREE | LIGHT DUTY | HEAVY DUTY | NOTE |
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| 25 ˚C | 30-60 minutes | 48-72 hours | 5-7 days | — |
| 60 ˚C | — | — | — | Baking at 60⁰c – 30min will assist cure time but Light and Heavy Duty recommendations remain |
BAKE TEMPERATURE IS METAL TEMPERATUREBake time starts when the panel reaches temperature, not when the door shuts. A cold panel in a 60 °C booth takes roughly ten minutes to get there — add that to the schedule or the film is under-cured. Baking at 60⁰c – 30min will assist cure time but Light and Heavy Duty recommendations remain
06COATING THICKNESS — WHERE THIS SITS IN THE STACK
THIS PRODUCT · GPFUNC10 ▶
total 150-450 µm
Sealer / wet-on-wet
25-35 µm
2K primer surfacer
50-80 µm
Body filler
shaped back — not film
SUBSTRATE
bare steel / prepared panel
FULL BUILD
320-720 µm — over the panel budget; specified on its own terms
Read it like the panel: substrate at the bottom, clear on top. Faded rows are the rest of the system at its normal build. See the Coating Thickness Guide.
07RECOAT & REWORK
| Recoat — this product over itself | Can be overcoated with Germatech 2k topcoat – allow 24 hours before overcoating. Do not overcoat within 24 hours. |
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HOW EACH COAT BONDS — WHY EVERY WINDOW ON THIS SHEET CLOSESThe whole repair is designed as
one system applied within one overall time frame: the primer is dried and sanded, but from colour onward it is a concurrent, same-day process — and every window on this sheet exists to keep you inside it. Within its window the next coat fuses chemically with the film beneath; past it, the film has cured and adhesion must be made mechanically — abrade, degrease, recoat. Heat closes windows sooner: cure runs on temperature, not the clock. Straying from the timed system — jobs interrupted, held over, stretched — is where the problems start. Full explanation in the
GERMA-TECH APPLICATION STANDARD.
If in doubt, abrade. IF YOU MISS THE RECOAT WINDOWOnce the film has cured past its recoat window, do not put another coat straight over it — the new coat sits on the surface and lets go at the interface. Abrade the whole area first (P800 wet or a grey abrasive pad), degrease, tack off, then recoat.
08PHYSICAL PROPERTIES
| Density | approx. 0.95-1.05 (relative density, water = 1) — estimated from the Safety Data Sheet; not separately measured |
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| Equipment cleaning | Clean guns and equipment immediately after use with gun wash or a solvent cleaner. Never let mixed 2K product start to cure in the gun — once it kicks, no solvent will save it. |
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09STORAGE, SHELF LIFE & PACKS
| Storage life (unopened) | Up to 36 months unopened — SUBJECT TO correct storage: a cool, dry place below 20 °C, out of direct sun. Heat is the biggest killer of paint in the tin: stock stored or transported in hot vehicles, tin sheds, shipping containers or direct sunlight loses life fast whatever the date on the tin, and that is where most premature failures start. Storage life is an optimal guide, not a promise that survives a hot shed. |
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| Once the seal is broken | Once the seal is broken the clock starts, and how you store it sets the pace. This product: 14 DAYS once the seal is broken, then discard.
All hardeners: 14 days once opened — then discard. Hardener is sealed without air; the moment air enters it starts to deteriorate. A part-used tin resealed tight lasts the 14 days; a loose lid does not. |
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| Storage | Store indoors in a cool, dry place below 20 °C, out of direct sunlight, with the lid sealed tight after every use. Never store or transport in heat — not in a tin shed, a shipping container, a hot van or a sunlit rack. |
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10PRODUCT CODES
| CODE | WHAT IT IS | PACK SIZE |
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| GPFUNC10 | Product | 4LT |
| GPFUN30G3 | Product | 4LT |
| GP4407STD | Hardener · Germatech MS hardener | 2.5LT |
| GP5107 | Reducer | 20LT |
| GP5108 | Reducer | 5LT |
| GPFUNC10 | Colour variant · Texture Coat Tintable | 4LT |
| GPFUN30G3 | Colour variant · Texture Coat Satin Black | 4LT |
11WHERE IT SITS IN THE SYSTEM
BARESUBSTRATE
›
EPOXYPRIMER
›
FILLER
›
2K PRIMERSURFACER
›
SEALERWET-ON-WET
›
COLOUR
›
CLEAR
This is an ancillary — it supports the steps above rather than forming a layer of its own.
12STANDARD NOTES — THE SAME ON EVERY SHEET IN THIS SET
- Mix to the stated ratio and use the mix within its pot life. Only use Germa-Tech hardener and reducer — never interchange with another brand. SN2 · ALL MIXED 2K
- Total coating thickness on the panel — every layer together — must not exceed 300 µm. Refer to the Germa-Tech Coating Thickness Guide. SN7 · ALL FILM-BUILDING
- Germa-Tech polyurethane takes up to 12 weeks to fully cure. When reworking or sanding imperfections, take care not to break through the clear into the exposed basecoat — reapplication directly onto sublayers can cause product reactions. Sand imperfections with P1500 working to P3000, then polish. SN8 · ALL POLYURETHANE (ISOCYANATE)
- Germa-Tech products are designed to work as a system — fillers, primers, basecoat, clears, hardeners, reducers, abrasives and ancillaries — each graded and tested for compatibility with the products and processes on this sheet. Performance is only assured within the system, and a fault is only assessable within it: once non-Germa-Tech product has been used in the process, what touched the panel can no longer be verified. SN10 · ALL PRODUCTS
- *Flash-off times are measured at the stated temperature and MUST be adjusted for the day: colder than stated = LONGER flash, warmer = shorter. In winter, shops painting below 23 °C routinely under-flash — solvent is still in the film when the next coat lands. Below 15 °C, extended flash and air dry are not enough: bake the job. SN13 · ALL PRODUCTS WITH A FLASH-OFF
Standard inclusions are controlled: each note applies to every product in its named set, enforced at build. They cannot drift onto some sheets and off others.
13PRODUCT-SPECIFIC NOTES
- Apply to surface with an even sweeping motion to obtain desired texture
- Spray test panel to first test for desired texture
- Humidity: Ideally apply at temperatures at or below 25⁰c and below humidity 60%
- Tintable mixed with Germatech 2k topcoat colour
- Some substrates will require additional preparation prior to application - refer substrate preparation.
- No mixed pot life is stated anywhere on the sheet; the 'Pot Life' heading is used for after-opening shelf life.
WARNINGS CARRIED FORWARD FROM THE PREVIOUS SHEETA flash of is required between each coat, flash off time should be adjusted +/- depending on air temperature. Fast and Slow hardeners and reducers can be used in extreme cold or extreme heat.
Do not place heavy loads on the surface until fully cured – allow 7 days
Do not dry in direct sunlight and allow 24 hours, temperatures in directly sunlight can exceed 70 ˚C
Do not overcoat within 24 hours
Do not reduce if using a Schultz Gun
AMBIENT TEMPERATURE — WHY EVERY TIME ON THIS SHEET MOVESEvery time on this sheet — flash-off, drying, pot life, the recoat window — is quoted at 20-23 °C, and every one of them moves with temperature, because the two things that set them, solvent evaporation and chemical cure, are both driven by heat. As a working rule cure rate roughly doubles for every 10 °C rise: at 30 °C the times run at about half; at 15 °C they stretch to nearly half speed. Judge by panel temperature, not air temperature — a panel in sun or fresh out of the booth is far hotter than the shed.
HOT WEATHER (above 30 °C): everything shortens. Flash-off comes down, pot life comes down, and the recoat window closes early. Move to the SLOW hardener and slow or extra-slow reducer so the film has time to flow and release solvent — spraying standard speeds in heat is the fast road to dry spray and solvent boil.
COLD WEATHER (below 20 °C): everything stretches. Flash-off gets LONGER — the most common winter mistake is coating over a film that looks flashed but has not released its solvent, which traps it under the next coat and comes back as fry-up, dieback or runs. Move to the FAST hardener, and extend every flash. Below 15 °C standard 2K cure effectively stalls — bake the job, or wait for heat. Cold does not extend the recoat window in proportion either: contamination, moisture and flash rust run on the clock regardless of temperature.
14GOOD TO KNOW — WHAT WE GET CALLED ABOUT
- Spray a test panel first. The texture comes from your gun and technique, not out of the tin.
- Do not reduce it if you are using a Schultz gun.
- Flash between every coat, and adjust the flash time up or down with the shop temperature.
- Apply at or below 25 °C and under 60% humidity.
- Do not overcoat within 24 hours, and keep loads off the surface for 7 days.
15TROUBLESHOOTING
| DEFECT | WHAT YOU SEE | WHY IT HAPPENED | FIX |
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Dry spray | a rough, dusty, low-gloss patch - usually on the far side of a long panel or around the edge of a blend | the atomised paint dries before it lands - gun too far off, air pressure too high, reducer too fast, or the shop running hot; on big panels the mist dries in flight | on 2K solids and clear, lay Thinner SRA over the overspray area straight after the coat to melt it in; once cured, sand the dry area back and refinish |
Solvent pop | small open craters or burst blisters through the film, usually only obvious after the bake or once the panel has cooled | solvent trapped under a skinned-over film - flash time cut short, coats laid on too heavy, too many coats, or the panel put into the bake before the final flash was done | let the film cure right out, then sand the popped area back to a sound film and refinish; if it has gone through to the undercoat, sand back to the undercoat, re-prime and refinish |
Delamination and peeling | a coat lets go of the one under it - the film peels, flakes or lifts off cleanly in sheets, often starting at an edge or a stone chip | the surface underneath was not keyed or was not clean - missed degrease, wrong or no undercoat, sanding grit too fine or missed altogether, recoat window blown, or basecoat left too long before clear | remove all the loose film back to a sound layer, feather the edge, re-prime and rebuild the system properly |
Runs and sags | the wet film slides down the panel and leaves a drip, tear or curtain, worst on vertical panels and around edges | too much material in one coat, gun too close or moved too slowly, air pressure too low, flash between coats skipped, reducer or hardener too slow, or a cold panel | if it is still wet, do not touch it - let it cure fully, block the run flat with P1500 working to P3000, then polish; heavy runs get sanded flat and resprayed |
Soft film and slow cure | the film stays soft, marks under a fingernail or a mask edge, clogs the paper when sanded and will not polish up | wrong or short-measured hardener, mixing beyond pot life, spraying too cold, bake cut short or started before the flash was finished, or a drying additive used where a hardener is needed | give it a full bake cycle and re-check; if it is still soft the film has to come off back to a sound layer and be redone with the correct mix |
Water spotting | dull rings or spots where water droplets have sat and dried on the finish, most often on a fresh job | water landing on a film that has not fully cured, washing in direct sun, or a car put out in the weather before the film has hardened | compound and polish; if the marks have etched in, sand P1500 to P3000 and polish, or sand and refinish |
AUSTRALIAN CONDITIONSAbove 30 °C ambient, move to the slow hardener and slow reducer and expect flash-off to shorten — dry spray and blushing are what a standard system gives you through a hot afternoon. Below 15 °C, air drying is not recommended: bake. In coastal and high-UV areas do not shortcut the epoxy step on bare metal.
16HEALTH & SAFETY
ISOCYANATE — AIR-SUPPLIED RESPIRATOR REQUIREDThe hardener for this product contains a hexamethylene diisocyanate homopolymer (MS hardener) — SDS 7966-13. Spray only in a booth complying with AS/NZS 4114:2020, using
air-supplied respiratory protection — a cartridge respirator is not adequate protection against isocyanate mist. Workers exposed to isocyanates require health monitoring under the model WHS Regulations (Schedule 14) and equivalent state legislation. Refer to the Safe Work Australia
Model Code of Practice: Spray painting and powder coating.
Read the Safety Data Sheet before use. REVISION HISTORY
| VERSION | DATE | CHANGE |
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| v2.3 | 02.09.2026 | Reissued on the current Germa-Tech technical data sheet format. New in this issue: a quick-reference card, the hardener and reducer selection gauge, the coating thickness stack, the recoat-window recovery procedure, and a product-specific troubleshooting table. Bake schedules are now stated as metal temperature. |
17WARRANTY & FURTHER INFORMATION
TALK TO US — WE MEAN ITWe are always happy to talk to customers who contact us directly. If anything on this sheet does not fit the job in front of you — an unusual substrate, a tight timeline, a cold morning, a window you have missed — call before you spray, not after.
support@amproaustralia.com · germatech.com.au This sheet is read together with the GERMA-TECH APPLICATION STANDARD (terms, conditions of application and warranty) and the Coating Thickness Guide — both hosted with the data sheets and at germatech.com.au. Warranty is conditional on correct use of the product as described on this sheet, including the sanding steps and grits in its sanding guide, within the Germa-Tech system. The information in this data sheet is given in good faith and is based on laboratory and field testing. Ampro Australia has no control over the conditions under which this product is used, so the end user must satisfy themselves that the product is suitable for the intended application and conditions. All times are quoted at 20 °C and 50% relative humidity unless stated otherwise. This sheet supersedes all previous issues.
