Grunt Boat Cleaner is heavy duty marine cleaner designed to remove those hard to tackle stains that can occur from the waterline; rust and the general wear and tear of a boat.  It works by penetrating the gel-coat; using a chemical reaction to gently neutralise and absorb staining without affecting the finish.

1) Pour some Grunt boat cleaner into a clean bucket or other suitable container; make sure that the bucket

is dry inside as any water present will dilute the cleaner making it less effective.

Grunt boat cleaner is formulated in a gel consistency to enable it to be used on vertical or overhead

surfaces.

2) Apply Grunt boat cleaner to the stained areas using a small paint brush. For larger areas or for heavily

stained hulls it may be necessary to coat the entire hull, this can be easily achieved using a larger brush.

Treating just a small area may leave you with a “clean spot” showing up the dirt and staining on the rest

of your boat necessitating an overall treatment. To avoid leaving “clean spots”, the entire area sould be

treated with Grunt boat cleaner.

3) Always ensure the area to be cleaned is free from all old wax or polish as this may affect the working of

Grunt as the wax will act as a barrier not allowing Grunt to reach the staining in the surface below and

stopping it working properly. A wash with any standard boat wash will remove any wax or polish

remaining on the surface.

4) Leave Grunt boat cleaner on the surface for at least thirty minutes, longer in colder weather or heavier

staining, and then rinse off with a sponge and clean water.

Remember Grunt works purely by a chemical reaction therefore it is vitally important to allow Grunt

“time” to gently neutralise the stains and absorb them, DO NOT rub or scrub the area treated or rush

this process, it may be best to get on with another task or have some lunch as a “watched pot” never

boils!!. Grunt is designed to do the work without you.

Grunt boat cleaner should not be allowed to dry out on the surface if it is to remain active. If this does

happen on a very hot day apply another light application.

5) For stubborn stains re-apply Grunt boat cleaner to that area and leave for longer. Thoroughly rinse the

entire surface with a sponge and fresh water. You should now have a beautifully clean boat. To maintain

your boat in this condition you can apply a high quality marine carnauba wax which seals the surface

helping prevent further staining.