4.1 Pre-Wash (Snow Foam) Applied Using A Spray Bottle
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Pre-wash cleaners, also known as ‘snow foam’ are designed to dwell on the surface longer than standard shampoos. The foam is created using a combination of a high foaming product and pressure. Pump spray bottles and spray guns attached to hosepipes create less pressure than foam lances connected to pressure washers, therefore the foam tends to be less thick. Most foam guns have a mixer dial which allows the user to alter the water to product ratio, creating thicker or thinner foam as desired. Using a pre-wash is an ideal, non-contact method of removing potential harmful larger particles of dirt, helping to prevent swirls and scratches during the wash process.
Most pre-wash cleaners are not harmful to cabriolet soft tops, so getting a small amount of product onto a soft top is generally not a problem. However, for cleaning a soft top correctly it is advisable to use products specifically designed for the purpose, in order to ensure colour and performance of the material is not affected.
Equipment:
- Pre-wash cleaner
- Pump sprayer or
- Pre-wash foam gun
- Hosepipe connected to mains water
Pump Sprayer Method:
- Step 1 – Combine pre-wash cleaner with water according to ratio suggested by manufacturer
- Step 2 – Pump sprayer to create pressure in the bottle
- Step 3 – Aim sprayer at the car from a distance of 3-5 feet
- Step 4 – Cover car in foam and allow to dwell until foam runs down the surfaces of the car, changing colour and carrying away dirt
- Step 5 – Rinse car with clean running water to ensure all residue is removed
- Step 6 – If necessary, repeat Step 1 – Step 5
Foam Gun Method:
- Step 1 – Pour pre-wash cleaner into the foam gun bottle
- Step 2 – Connect foam gun to hosepipe (connected to mains water)
- Step 3 – Spray solution on to car
- Step 4 – Allow to dwell until foam begins to run down the surfaces of the car, changing colour and carrying dirt away
- Step 5 – Rinse car with clean running water to ensure all residue is removed
- Step 6 – If necessary, repeat Step 1 – Step 5
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