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Paint Calculator

Not sure how much paint you need? Just enter the width, length and height of the room below and we'll calculate it for you.

Enter measurements rounded to the nearest foot.

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What type of paint brushes do I need?

For latex paints, use a brush made of a polyester/nylon blend. For oil paints, use brushes made of black China bristles.

For cutting in to window frames, door frames or trim, use a 3” wall brush with a straight edge. For woodwork, use a 2” brush with a straight edge. For corners and window sashes, use a 2” tapered sash brush.

For the best results, make sure you choose the right brush.

Check your state and local codes before starting any project. Follow all safety precautions. Every effort has been made to ensure the accuracy and safety of this information. Neither Westlake nor any contributor can be held responsible for damages or injuries resulting from the use of the information in this document.