Germa-Tech Fibreglass filler is a fast drying fibreglass filler with great adhesion and perfect tension. Ideal for restoring cracks or broken panels.
Remove Wax, Silicon and other contaminants with Germa-Tech Prepsol and Germa-Tech Prepsol wipes.
| Ratio by weight | Body Filler : Hardener = 50:1 (by weight) do not over harden |
|---|---|
| Pot life | 3-5 Minutes at 25 °C (Application Life) |
| Notes | Thoroughly mix, avoid stirring air into mix. The sheet expresses hardener addition as a 50:1 weight ratio, NOT as a percentage. |
| TEMPERATURE | GEL TIME | SAND — WET | SAND — DRY | NOTE |
|---|---|---|---|---|
| 25 °C | 3-5 Minutes | 9 Minutes | 20 Minutes | allow additional drying times in colder weather |
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.
| Step | Grit | What you are doing | Germa-Tech abrasives — examples by part number |
|---|---|---|---|
| 1 · Shape | P80 dry | Rough-shape the cured filler down to profile. Use a board or long block on anything bigger than your hand — a palm alone follows the wave instead of cutting it. | SHEER CERAMIC board strip 70×420 P80 (GSR70080) on block PB18.3 · VIBE long block sheet 115×225 P80 (GSR115080) · ORBIT GOLD 150 mm disc P80 (M6-P080-100) |
| 2 · Refine | P180 dry | Remove every P80 scratch and finish the shaping. Feather the filler edge into the surrounding paint. | SHEER CERAMIC 70×420 P180 (GSR70180) · ORBIT GOLD 150 mm P180 (M6-P180-100) |
| 3 · Final | P240 dry | Final refine ready for primer. Blow off, degrease, prime. | ORBIT GOLD 150 mm P240 (M6-P240-100) · BLOCK CERAMIC 70×125 P240 (GSR125240) |
| Density | approx. 1.70 (relative density, water = 1) — estimated from the Safety Data Sheet; not separately measured |
|---|---|
| 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. |
| 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. |
|---|---|
| Once the seal is broken | Once the seal is broken the clock starts, and how you store it sets the pace. Filler tin: 30 days once opened, resealed tight and unskinned — skinned or contaminated filler is done. The cream hardener: 14 days once opened, 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. |
| 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. |
| CODE | WHAT IT IS | PACK SIZE |
|---|---|---|
| GP206 | Product | 1.5KG |
Stated on the source sheet without a code: Hardener: BPO hardener (no code printed)
The highlighted step is where this product sits in the repair. Ancillaries support every step.
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.
| DEFECT | WHAT YOU SEE | WHY IT HAPPENED | FIX |
|---|---|---|---|
Pinholes in filler | clusters of small holes in the sanded filler that keep reappearing every time you sand and prime | air folded into the filler while mixing, the filler applied over a contaminated or oily surface, or the mix worked past its 3-5 minute application life | skim the area with Polyester Fine Filler in thin layers, sand P320-P400, then re-prime; small pinholes in primed work can be filled with body filler over 1K or 2K primer but the area must be re-primed before colour |
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 |
Shrinkage over filler | the repair looks flat when it leaves the booth and the filler shape shows back through days later, usually as a dull low patch | filler or primer sanded before it had cured through, over-hardened filler, filler applied too thick in one hit, or primer stacked past its coat limit | sand the sunken area back, re-prime with 2K hi-fill, let it cure properly, block flat and refinish |
Cracking and crazing | fine random cracks through the film, sometimes in a crows-foot pattern, worst over heavy build and over filler or flexible panels | total film build too high, too many coats stacked, plastic primer laid on too thick, a rigid film over a substrate that flexes, or a coat put over an under-cured layer | strip the cracked film back to a sound layer, re-prime and rebuild inside the film limits |
Rust breakthrough | rust staining or blistering pushing up through the finish, usually along a repair edge, a weld, a stone chip or a panel bottom | bare or rusted metal coated without proper treatment, filler or surfacer put straight on bare steel and left, oxidation forming between prep and priming, or a coating not cured hard enough to seal | cut the corrosion out back to sound clean metal, epoxy prime, then rebuild the system |
Sanding-mark showthrough | the sanding scratch pattern from the stage underneath telegraphs through the finished film, often as fine parallel lines or DA swirls | grit too coarse for the coat going over it, the undercoat not fully cured before it was sanded, or the finish grit skipped so a coarse scratch was never removed | sand the area back flat at the correct finishing grit, re-prime, and refinish |
| VERSION | DATE | CHANGE |
|---|---|---|
| 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. |
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.
