THINNER SRA - BLENDING THINNERS — Technical Data Sheet

ANCILLARY · THE SUPPORT

THINNER SRA - BLENDING THINNERS

GP5103

Germa-Tech Thinner SRA is used to dissolve the rough overspray area of new and existing finishes and achieve an invisible transition for panel repair.

SCAN FOR THE FULL RANGE,
APPLICATION GUIDES & VIDEOS
germatech.com.au

TDS v2.3 · ISSUE 02.09.2026
SUPERSEDES 07.2022
REVIEW DUE 07.2028

MIXING

READY TO USE

NO MIXING · DO NOT THIN

MIXING RATIO

1:1

BY VOLUME

COATS

Spray one light coat over the overspray area with Thinner SRA right after…

see the detail below

FLASH BETWEEN COATS

20 s (second coat in 20 seconds)*

*ADJUST FOR THE DAY'S TEMPERATURE

01SUITABLE SUBSTRATES

Overspray area of 2K solid colours, clear coat in panel repairs

02MIXING

Ratio by volume	1:1
Notes	Ready to use - can mix with paint remaining in the spray gun in the ratio of 1:1.

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.

03APPLICATION

Coats	Spray one light coat over the overspray area with Thinner SRA right after the finish. Second coat in 20 s.
Flash-off between coats	20 s (second coat in 20 seconds)

04DRYING & CURING

No drying schedule is printed on the source sheet.

05RECOAT & REWORK

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.

06PHYSICAL PROPERTIES

Density	approx. 0.84-0.90 (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.

07STORAGE, 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.
Once the seal is broken	Once the seal is broken the clock starts, and how you store it sets the pace. This product: 90 days once the seal is broken, resealed tight — then discard.
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.
Pack sizes	1L*12 cans per box

08PRODUCT CODES

CODE	WHAT IT IS	PACK SIZE
GP5103	Product	1LT

09WHERE 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.

10STANDARD NOTES — THE SAME ON EVERY SHEET IN THIS SET

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.

11PRODUCT-SPECIFIC NOTES

Application: Spray one light coat over the overspray area with Thinner SRA right after the finish. Second coat in 20 seconds.

WARNINGS CARRIED FORWARD FROM THE PREVIOUS SHEETNot suitable for - 1K Basecoat and Primer.

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.

12GOOD TO KNOW — WHAT WE GET CALLED ABOUT

Spray one light coat over the overspray area straight after the finish, second coat 20 seconds later.
SRA is for 2K solid colours and clear only. Never use it on 1K basecoat or primer.
It dissolves a rough overspray edge - it is a blending aid, not a fix for a badly laid coat.
The window is right after the coat goes on, not after the flash-off.

13TROUBLESHOOTING

DEFECT	WHAT YOU SEE	WHY IT HAPPENED	FIX
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
Edge mapping and ringing	a visible ring or outline of the repair showing through the finished panel, following the featheredge or the primer patch	primer sanded too thin at the featheredge so topcoat solvent reaches the old finish, featheredge grit too coarse, or the primer not fully cured before topcoating	sand the ring back, re-prime over the featheredge with 2K primer, let it cure, and refinish
Orange peel	an even, bumpy, dimpled surface like the skin of an orange - the film has not levelled out	material too thick or under-reduced for the conditions, air pressure too low, fan too wide, gun held too far off, reducer or hardener too fast for the day, or shop temperature too high	while still wet, an extra full wet coat with a proper flash will flow it out; once cured, de-nib P1500 through P3000 and polish, or sand and respray if it is heavy
Die-back and gloss loss	the finish looks right coming out of the booth and then dulls off over the next hours or days	polished or handled before the film had cured, film built too heavy, flash between coats too short, wrong reducer or hardener for conditions, or poor booth air movement	let it cure, then compound and polish; if the gloss will not come up, sand and respray
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

AUSTRALIAN CONDITIONSSolvent products flash faster as the temperature climbs. Above 30 °C expect a degreaser or blending solvent to evaporate before it has done its job — work smaller areas and wipe off before it dries. Keep containers closed and out of direct sun.

14HEALTH & SAFETY

HEALTH & SAFETYFlammable solvent product. Use in a well-ventilated area away from ignition sources, with respiratory, eye, skin and hand protection selected in accordance with AS/NZS 1715 and AS/NZS 1716. Read the Safety Data Sheet before use.

SAFETY DATA SHEETS: PRODUCT SDS ⭳

REVISION HISTORY

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.

15WARRANTY & FURTHER INFORMATION

WHERE THE WARRANTY LIVESThe product warranty, the defined terms and the general conditions of application for every Germa-Tech product are set out in the GERMA-TECH APPLICATION STANDARD — go straight to the warranty (section 06) — hosted alongside the data sheets and at germatech.com.au. Film-build limits are in the Coating Thickness Guide. This sheet is read together with both.

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.