Mould Science Technologies Gone 4 Good is a clear surface treatment applied after mould stain removal. It is neither a paint nor a polymer: it is a blend of high-pH salts that dissolve in water and bond to the surface. Mould Science Technologies state it raises the surface pH above 12.
Because it is not a film-forming coating, it can go on straight after the surface has been cleaned with a mould stain remover, rather than waiting for the surface to dry. That is the commercial point: the manufacturer pitches it as the product that lets a crew finish a mould job in one day instead of two.
Why It Matters on the Job
Most mould jobs run over two days: day one for set-up and removal, day two for coating and tear-down. The reason is usually the coating: paints and polymers applied to a damp surface peel. Gone 4 Good is applied within about 30 minutes of the stain remover, while containment is still up, so the second visit can be avoided.
It dries crystal clear. Many hygienists prefer that to a painted-over surface, because a painted surface raises questions at clearance.
Before photos show mould-stained surfaces before removal with On & Gone or OSR Dry. After photos show the same surfaces after stain removal and treatment with Gone 4 Good.
Key Features
- Clear, high-pH salt blend; not a paint or polymer
- Applied immediately after mould stain removal, without waiting for the surface to dry
- Dries crystal clear
- Suits porous timber and concrete
- The manufacturer states it is not a biocide and contains no VOCs that break down and off-gas over time
Where It Fits
- Set up containment and fix the moisture source.
- Remove mould growth and staining with a stain remover (Mould Science Technologies pair it with their On & Gone or OSR Dry).
- Apply Gone 4 Good over the cleaned surface within about 30 minutes.
- Dry the structure and complete clearance.
A surface treatment is the last step, not a substitute for removing mould and drying the building.
Application
Safety
The manufacturer's safety data sheet classifies Gone 4 Good as corrosive, signal word Danger. Treat it as you would any strong caustic.
- Causes severe skin burns and serious eye damage (H314). May be corrosive to metals (H290).
- It is a fine powder. Avoid raising dust when opening and mixing, and do not breathe the dust.
- Wear chemical-resistant gloves, protective clothing, and chemical goggles or a face shield. Use a suitable respirator where ventilation is poor or dust is generated.
- If it gets in the eyes, rinse cautiously with water for several minutes, remove contact lenses if easy to do, keep rinsing and get medical help immediately. On skin, remove contaminated clothing and rinse with water. For poisons advice, call 13 11 26.
- Keep it in the original container, tightly closed and dry, away from acids and oxidising materials. Store locked up.
Read the Gone 4 Good safety data sheet before first use.
Specifications
| Brand | Mould Science Technologies |
|---|---|
| Product | Gone 4 Good surface protector |
| CCW SKU | CR703A |
| Pack | 980 g |
| Type | High-pH salt blend, water-soluble; not a paint or polymer |
| Form | White fine powder, soluble in cold water |
| Main ingredients | Sodium silicate (80–100%), disodium metasilicate (7–13%) |
| Hazard classification | Corrosive, signal word Danger: skin corrosion category 1, serious eye damage category 1, corrosive to metals category 1 (manufacturer SDS, revised 11 February 2024) |
| Transport | Dangerous goods, Class 8 (corrosive) |
| Safety data sheet | Gone 4 Good SDS (PDF), Australian edition, version 1.0, issued 13 October 2026 |
| Surface pH (manufacturer) | Greater than 12 |
| Finish | Dries clear |
Frequently Asked Questions
Can I apply it to a damp surface?
That is its main advantage. It is a salt blend, not a film, so the manufacturer has it going on within about 30 minutes of stain removal.
Will it show?
It dries clear. You can barely tell it has been applied.
Is it a paint?
No. It is a high-pH salt blend that bonds to the surface.
Does it kill mould?
No. The manufacturer states it is not a biocide. Remove mould physically and dry the structure; Gone 4 Good goes on afterwards.
Do I need PPE?
Yes. It is classified as corrosive. Wear chemical-resistant gloves, protective clothing and goggles or a face shield, and avoid breathing the dust when mixing.
A Note on Earlier Versions of This Page
Earlier versions of this page said mould "simply cannot grow" on treated surfaces, that the treatment protects surfaces for 10 years, and quoted laboratory results. Claims that a product prevents mould growth on a surface are pesticide claims in Australia and need APVMA registration, which we have not been able to confirm for Gone 4 Good, so they have been removed. The product is unchanged.
Planning a mould job and want to finish it in one visit? Tell us the area and substrate, and we will help you work out quantities.
