This is a quick post that covers off what reducers can be used when Kubota paint is being applied using a paint sprayer and not in a spray can. Adding a reducer makes the paint flow through the spray tubing and gun easier and also, depending on the type of reducer, can control how fast the paint dries.
A Few Types
There are two main types of reducer available, some manufacturers also make a third that falls in the middle. The two types are fast reducer and slow reducer. Each of these types refers to how quickly the paint will dry and how “spreadable” it is. You generally want to choose your paint reducer according to the temperature of the environment that you’ll be painting in. Two things that can cause problems for paint when it dries are the drying time and the humidity. Drying too fast, too slow or too wet can cause problems for your paint job.
A fast reducer speeds up drying and curing time, so we would mix in this type of reducer in cooler, damper environments – perhaps when painting in the garage on a fall afternoon for instance. You’ll find that you do not have to wait as long between coats which is a handy time saver. We use fast reducers generally when the environment temperature is below 60F/15C.
A slow reducer is just the opposite, slows drying time to allow the paint time to cure properly. You might use this type of reducer on an average summer day in the shade or when the temperature is above 75F/24C.
A few paint manufacturers offer a medium reducer, Sherwin-Williams is one. Medium reducers are used in temperature ranges between 60-75F/15-24C.
Mixing Ratio, Brand and Cost
Whenever we use Kubota paints by the quart or gallon, we mix in paint and reducer in a 4:1 ratio. That is, 80% of the mixture is paint and 20% is the appropriate reducer. We use Sherwin-Williams R7K211 fast reducer which is priced around $47/gallon. We mix the reducer and paint right in the gun cup that way you don’t end up with reduced paint that you do not use at the end of the project.
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