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How to check you work

Check your work at different times of the day in varying levels of both natural and artificial light

Varying levels of light will both hide and reveal surface defects. A combination of varying levels of both artificial light from work lights and natural light from the sun are needed to accurately view and successfully complete surface preparation tasks. Adjust your halogen work light to focus varying levels of light intensity on preparation surfaces. When you do, you will be surprised at how differently you are able to view each surface. Lower levels of light gently shadow and reveal surface imperfections, while higher levels of light often conceal some surface imperfections, while minimizing others. Turn your halogen work light off and check preparation surfaces in natural light during the course of the day. With natural light, you will often see surface imperfections not visible to you with your work light. Natural light gives the human eye a greater depth perception than artificial light. The late afternoon and early evening hours present the best low-level natural light for checking preparation surfaces. Low-level natural light exposes areas that are not flush or uniform, providing you with an excellent view of surface conditions. In rooms that are not exposed to much natural light, place a table lamp on the floor a few inches away from the wall. The low-light cast on walls from the lamp will often expose several surface defects. Move the lamp to several locations along each wall.

In review, inspect surfaces and your work daily in varying amounts of both artificial and natural light. This technique will greatly improve your ability to recognize surface conditions. It will also help you to complete good interior surface preparation work.

This information can be found on page 71 in the book:
The Homeowner's Guide to Surface Preparation for Interior House Painting.

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