Trade Chem Foaming Wash is a concentrated vehicle shampoo built to lift dirt, road film and everyday grime without stripping wax or leaving swirl marks. Because it's sold concentrated, how much water you add makes a real difference - too weak and you lose cutting power, too strong and you're wasting product. Below are the exact ratios from the product label, plus how to adjust them for your setup.
Foaming Wash Dilution Ratios at a Glance
| Method | Dilution Rate |
|---|---|
| Bucket wash | 20-50mL per 10L of water |
| Foam cannon | 50-150mL per 1L bottle |
| Heavy soiling | Up to 100mL per 10L of water |
Dilution rates are a guide only and can be adjusted to suit the level of soiling and your application method.
Bucket Wash
The standard two-bucket method for cars, trucks, boats and motorbikes.
- Dilution rate: 20-50mL of Foaming Wash per 10L of water
- Application: Apply with a sponge, wash mitt or foam applicator, working top to bottom
- Rinse: Agitate the surface, then rinse thoroughly before the product has a chance to dry
Start at the lower end (20mL) for regular maintenance washes, and move toward 50mL per 10L for dirtier vehicles.
Foam Cannon
For a thicker, clinging foam that gives dwell time on tougher grime before you touch the surface.
- Dilution rate: 50-150mL of Foaming Wash per 1L foam cannon bottle
- Adjust within that range based on your cannon's air/water mix and how dirty the vehicle is. More concentrate means thicker, longer-lasting foam
- Most foam cannons perform best with the bottle topped up to 1L total volume, then adjusted from there rather than mixed in bulk
Heavy Soiling
For vehicles or equipment that have picked up serious grime, think worksite trucks, farm vehicles, or anything that's gone weeks between washes.
- Dilution rate: Up to 100mL per 10L of water
- Let the foam sit slightly longer on heavy soiling before agitating, but never let it dry on the surface
Adjusting for Hard Water
If you're in an area with hard or bore water, you may need to sit slightly toward the stronger end of each range. Minerals in hard water can reduce how well a diluted wash foams and cuts through grime. If you're getting a thin foam or the wash feels like it's not lifting dirt as expected, that's usually the first thing to check before assuming the product needs replacing.
The Combined Method: Foam Cannon Pre-Wash, Then Bucket Wash
For the best possible result, and the method most professional detailers actually use, don't choose between foam cannon and bucket wash. Use both, in sequence:
- Foam cannon pre-wash: Apply a thick layer of foam across the entire vehicle at the foam cannon dilution rate. Let it dwell for a few minutes to break down and loosen dirt and grime, working in shade if possible so it doesn't dry out.
- Rinse off: Hose or pressure rinse the foam away before it dries. This alone removes a large amount of loose dirt and grit, the stuff that would otherwise get dragged across the paint by a wash mitt.
- Bucket wash: With the bulk of loose contamination already gone, do your normal two-bucket contact wash. Because the surface is already pre-cleaned, there's far less grit left for the mitt to drag across the paint, which is what actually causes swirl marks.
Some detailers go a step further and apply a fresh layer of foam right before the contact wash step too, on top of the pre-wash and rinse. This adds extra lubrication under the mitt during scrubbing, on top of the grime already having been lifted, rather than replacing the pre-wash rinse. If you're doing this, there's no need to use a different dilution, the same foam cannon rate works for both applications.
This combined approach takes a bit longer than either method alone, but it's the safest option for paint if swirl marks are a concern, since the foam cannon does the heavy lifting before anything physical touches the surface.
Bucket Wash vs Foam Cannon: Which Should You Use?
- Bucket wash alone is the most economical and works well for regular maintenance washes where the vehicle isn't heavily soiled.
- Foam cannon alone (attached to a pressure washer) gives you thicker, clinging foam with longer dwell time, and works as a quick touchless pre-wash on its own if you're short on time.
- Combined method (above) gives the best paint-safe result and is worth the extra few minutes for vehicles you actually care about the finish on.
- Heavy soiling ratio applies to any of these methods when you're dealing with worksite vehicles, farm equipment, or anything that's gone a long time between washes.
Foam cannons are better for paint-safe pre-wash on cars, while a straight bucket wash is often more practical for trucks, boats and motorbikes where swirl marks matter less.
Why Dilution Ratios Matter
Getting the ratio right isn't just about saving money on product, though a concentrated formula does deliver better value per wash. The right dilution:
- Gives you rich, clinging foam that actually lifts contaminants instead of just sliding off
- Reduces the risk of swirl marks, since a properly diluted wash needs less scrubbing pressure
- Keeps the pH-balanced formula (pH 7-8) working the way it's designed to, without over-diluting past the point where it can break down grime
Where You Can Use It
Foaming Wash is suitable for cars, trucks, boats and motorbikes, anywhere you need a concentrated, foaming vehicle shampoo that won't strip existing wax or sealant.
Safety First
Foaming Wash carries a DANGER signal word, not because it's a dangerous good for transport (it isn't, so it ships nationwide with no freight restrictions), but because concentrate can cause skin irritation and serious eye damage on contact. When handling the concentrate:
- Wear protective gloves and eye protection
- Avoid contact with eyes and skin
- Use in a well-ventilated area
- Keep the container tightly closed when not in use
- Don't discharge into drains or waterways
If you do get product in your eyes, rinse cautiously with water for several minutes and seek medical attention. Full first aid and safety information is on the product label and available on request.
Emergency Advice: CHEMCALL 0800 243 622 (24 hours)
Frequently Asked Questions
Can I use Foaming Wash in a pressure washer or snow foam lance? Yes. Use the foam cannon dilution rate (50-150mL per 1L bottle) as your starting point, then adjust based on your specific lance or cannon's air/water mix.
Does Foaming Wash strip wax or sealant? No. It's formulated at pH 7-8 specifically so it won't strip existing wax, sealant or paint protection when used at the recommended dilution.
Is Foaming Wash safe for all vehicle types? It's suitable for cars, trucks, boats and motorbikes. Always test on a small, inconspicuous area first if you're using it on a new or unusual surface finish.
How much Foaming Wash do I need for a full vehicle wash? For a standard bucket wash (10L bucket), 20-50mL is enough for one full wash cycle. A 20L container will last most regular users a long time at that dilution.
Is Foaming Wash a dangerous good for shipping? No, Foaming Wash is not classified as a Dangerous Good for transport, so it ships nationwide with no DG freight surcharges.
Shop Trade Chem Foaming Wash and the full range of trade cleaning chemicals at tradechem.co.nz.