Selecting Brushes and Roller Covers

Identify the coating first: an oil-based primer, water-based wall paint, enamel, penetrating stain, or another specified finish. Then identify the surface that will receive it. A Level 5 smooth wall, a wood-grain door, rough cedar, and deep stucco texture need different tools even when the same painter is doing the work.

Four measurements and descriptions matter:

• Brush width and body: width affects the working area; a thicker, fuller body can carry more paint.
• Roller width: the length of the cover, such as 9 inches.
• Nap length: the working pile height, such as 1/4 or 3/4 inch.
• Core diameter and fabric: the opening that fits the frame, and the cover's fiber and construction. Woven and knit describe construction; they do not by themselves identify a fiber or nap length.

Oil-based products: natural China bristle

Natural China bristle and Chinex are different materials. Chinex is synthetic nylon, as identified by its manufacturer. [2] Do not substitute one name for the other.

Wall paint: capacity and firmness

Enamel: control around detail

Exterior work and staining

Drywall: primer and finish coats

The following choices apply to both primer and topcoat, including back-rolling where the job calls for it.

Cedar and stucco: back-rolling paint

Smooth doors and metal

Doors: look at the face, not only the word “door”

For more paint capacity on very large smooth surfaces, I may use a 3/8- or 1/2-inch WhiteDove; epoxy floors are an example from my work. That does not change my Level 5 drywall selection or establish an applicator specification for every epoxy. Follow the actual floor-coating system's requirements.

Woven choices for textured surfaces

Oil-based coatings: handling and texture matter

“Woven” does not mean “only for rough surfaces.” WhiteDove is a useful counterexample. Check the exact solvent-based coating rather than assuming a cover suits every solvent chemistry.

Frame design matters separately from width. These observations concern the frames I use; they are not a claim that every frame of a given width has identical construction.

Carry the same finish into restricted areas

For a new roller cover before water-based paint, I dip it in water, roll it repeatedly on a surface, and spin out excess water outdoors in a suitable area. This preparation is specifically for water-based coatings. Remove excess water before loading; do not treat a wet cover as ready for every coating.

Before loading a cover with an oil-based product, I mount it on the frame and roll it several times to check that it is properly attached. My routine does not include water or solvent pre-wetting.

See Interior Painting Techniques and Guidelines for a Paint Crew for bucket-and-grid loading, keeping the roller supplied with paint, and the cutting-and-rolling sequence. See Airless Spraying for coordinating spray work with back-rolling.

1. Use the curved roller-cleaning edge of a 5-in-1 painter's tool to recover usable excess paint into its can or bucket. Secure the lid afterward.
2. Prepare two 5-gallon buckets: one empty and one about three-quarters full of clean water, leaving room for the cover and splashing.
3. Remove the cover over the empty bucket. I tap the frame against the bucket's inside so the cover drops in. Clean the frame and the inside of the cover.
4. Secure the cover to the cleaning attachment. Hold the cover inside the empty bucket and spin for about 30 seconds to shed remaining paint.
5. Move it into the water bucket and spin for at least 30 seconds.
6. Return it to the receiving bucket and spin out the rinse water.
7. Collect the used water, clean and refill a bucket with fresh water, and use the other bucket to receive the next spin-off. Spin in fresh water for about 60 seconds or longer, then spin out into the receiving bucket.
8. Repeat until the liquid coming off shows no visible paint. Clear-looking water is my cleaning check; it is not a disposal test.
9. Give the cleaned cover a final spin of about 60 seconds. Stop the tool, then wipe the cover with a clean, dry rag.
10. Return it to the frame and hang the frame in storage or the van. Alternatively, use its original container in the roller-cover box, particularly when the frame is needed for another cover. Allow remaining moisture to dry before enclosing it in packaging that would trap moisture.

I wear latex gloves while handling paint and wet tools. That records my practice; it does not establish latex as protective against every coating or cleaner.

Contain the wash water. Collect paint residue and rinse water for an appropriate local disposal route. Do not wash paint into soil, gutters, or storm drains. A work sink must have an appropriate permitted waste connection; do not assume every jobsite sink is suitable. EPA guidance emphasizes collecting and managing paint wash water. [20]

I support the brush at the bucket rim and use a wire paintbrush-cleaning brush, working from the handle/ferrule end toward the tips on each side. I dip and repeat, then rinse thoroughly. At a suitable cleanup sink I use warm water. I shake out the water, spin the brush back and forth between my hands, and finish with a brush comb to straighten the filaments.

These are different cleaning practices. My wire-cleaning method is recorded as field experience; it is not Purdy-approved care. Follow the brush maker's directions for the brush being cleaned, using a comb in place of wire brushing where the maker calls for it.

Use the same wash-water containment principles described for rollers. This section does not provide an oil- or solvent-cleaning procedure.

Inspect the result while there is still time to correct the tool choice. Look for excessive roller texture, uneven marks, shedding, and holidays in recessed areas. Check for flashing as the finish dries.

Before starting, confirm:

• The brush or cover suits the coating and its required film thickness.
• The nap reaches the texture without leaving an unwanted finish.
• The width and frame allow access and comfortable, consistent work.
• The brush holds its filaments; the cover is clean and its core is sound.
• Mini covers match the main cover where a consistent rolled texture is needed.
• Cleanup equipment and a suitable wash-water collection point are ready.

I have included the following third-party demonstrations as supplementary references. The written procedures above remain the encyclopedia's instructions. These videos have not been independently reviewed for this edition, and no transcript or timestamps are asserted.

• Bucket-and-tool roller cleaning reference: the newer method I prefer.
• Older roller-cleaning method: supplied for comparison with the contained bucket method.
• Brush-cleaning demonstration using a hose: I find the cleaning useful, but the demonstrator omits the final combing step I use. Contain rinse water when adapting the method.

Related encyclopedia entries:

• Preparing and Repainting Cedar Siding
• Preparing and Painting New Drywall
• Repainting Previously Painted Interior Walls
• Interior Painting Techniques and Guidelines for a Paint Crew
• Airless Spraying
• Preparing and Repainting Exterior Stucco
• Preparing and Painting Rusted Steel and Iron
• Preparing and Painting Exterior Aluminum
• Choosing the Right Primer