Paint Roller: Parts, Types and How to Use

A paint roller is a tube-shaped tool used to apply paint on large surfaces with uniform coverage. This cylindrical painting tool soaks the paint and spreads it evenly without leaving strokes behind. It consists of a roller cover (nap, sleeve) that absorbs the paint, a roller frame that holds the nap, and a handle to hold during painting. A paint roller comes in various sizes from 3 inches to 18 inches, depending on the size of the area. They are used to paint large walls, cabinets, floors, and tables for a smooth and even finish. 

Table of Contents

What are the Parts of a Paint Roller

Paint rollers are made up of four key parts, including:

  1. Roller Frame: The roller frame is the metal cage that holds roller naps and supports them. These frames are available in different shapes and sizes, including double-arm, cage, pad, and adjustable paint rollers. They are designed to keep the roller in place and avoid frequent nap slips.
  2. Roller Cover: The roller cover is the tube-shaped material that sponges up the paint and coats it on the substrate. There are various types of roller covers used in American households and industrial buildings. Most common roller covers include microfibre (made of fiber, polyester, polyamide), woven ( waved fiber, wool), and foam naps (open cell, closed cell). Merino sheepskin, natural, and lambswool roller covers are also widely accepted. Roller covers come in different sizes and thicknesses. Thick naps of ¾” are used for rough surfaces, medium ⅜” for textured surfaces like bricks, and thin ¼” naps for smooth surfaces (metals, plastic). 
  3. Core: The core is the inner side of the roller nap that rolls over the roller frames. It is made up of plastic or cardboard to prevent the paint from leaking or sagging. It slides over metal frames smoothly to provide a flawless finish. Plastic (PVC) is best for water-based paints due to its moisture-resistant nature.
  4. Extension Pole: Extension pole is a pipe that adds length to the roller. It is used to access and paint ceilings or tall walls. Adjust the length of the roller according to the height of the wall and its good to go.

What are the Types of Paint Rollers

Here are the seven common types of paint rollers:

  1. Standard Paint Rollers: Standard paint rollers are also called manual paint rollers due to their simple and sleek design. Unlike a double-arm frame roller, standard rollers contain a single-arm rolling cage and a small handle. They are 7 to 12 inches wide and commonly used for interior and exterior painting purposes. 
  2. Mini or Trim Rollers: Mini or trim rollers are used to paint hard-to-reach and tight areas. Unlike standard paint, trim rollers are only 4 inches wide. They are used to paint furniture, trims, shelves, and skirting boards. Mini rollers provide detailed work with high precision without splashing paint in the surroundings. 
  3. Textured Rollers: Textured paint rollers are used to create different textures and strokes on the substrate. There are multiple types of texture rollers depending on the final finish and type of nap. A stipple roller is used to spread granule texture, a rag roller to add wood texture, and a loop foam roller for raised paint texture. Texture paint rollers add a depth and classic touch to clean and blank walls. 
  4. Pattern Roller: Pattern rollers are used to create different geometric designs on the substrate. They are used to paint accent walls, furniture, and cabinets with floral, abstract, and vintage pattern rollers. These rollers provide an aesthetic look to those on tight budgets. 
  5. Foam Rollers: Foam paint rollers do not have any texture or pattern. They provide a smooth and stain-free finish. Foam rollers are widely used as they are inexpensive and best for all types of paint. 
  6. Specialty Rollers: Like mini rollers, specialty rollers are also used to paint tough areas. It includes corner, split, and edge rollers designed to paint different surfaces with perfection.
  7. Wood grain Rollers: Wood grain rollers are made of soft rubber that provides a wooden texture. It is used with gel stains to paint coffee tables, lampshades, and chairs. Wood grain rollers are available in tube or rocker shapes with curved lines. 

How to Choose the Right Paint Roller

Here is how to choose the right paint roller:

  1. Surface Texture and Nap Length: Assess the surface to be painted before selecting the right paint roller. Natural paint rollers (lambskin) are unfit for rough or hard surfaces. Choose the synthetic naps paint rollers made of nylon or sponge to provide a texture free of hairline. Nap rollers are classified into three types based on their length such as short (3”), medium (9”), and long(18”) piles. Select the right sleeve that suits the surface texture and height. 
  2. Paint Type Compatibility: Select the paint roller according to the type of paint. Natural and foam rollers work best for oil-based paints (enamel, alkyd) and sealers. Microfiber and pad rollers work best for water-based paints (latex, acrylic) as they provide a smooth finish. Use a synthetic paint roller if making a choice becomes difficult, as it works for both solvent and water-based paints. 
  3. Project Size and Area: Project size, area, and height factors affect the type of paint roller used in painting. Standard, mini, and large rollers with extensions make it easy to paint every corner of the building. 
  4. Roller Material Type: Rollers are available in rubber, aluminum, and steel when it comes to the type of material. Aluminum paint rollers are flexible, moisture resistant, and lightweight with an effective grip. Rubber and steel rollers are known for their shock-absorbing and high-strength qualities. 
  5. Core Quality and Durability: Choose the nap with a plastic base that absorbs more paint and provides uniform coverage. Naps with low quality or cardboard cores do not last long. They affect the final finish and the sliding of the paint cover on cages. Plastic cores are best for repeated use, and they are easy to clean, too.
  6. Handle & Frame Compatibility: Make sure to select the right roller cover that fits your adjustable or pad frames. Examine the nap length that fits the roller cover before making a purchase.

How to Use a Paint Roller Effectively

Here are the seven ways to use a paint roller effectively:

  1. Prep the Surface: Clean the substrate with dry or wet microfibers to remove residues. Fill the dents and cracks to create a flat surface. Apply primer if needed to improve paint adhesion and shelf life. Surface preparation prevents frequent repainting and orange peel issues in the long term.
  2. Load the Roller Properly: Collect all the essentials, including a paint roller, a tray, a liner, a paint can, and a damp cloth. Rub the slightly wet rag on the roller cover to moisten it. Place the tray line in the tray and fill it with paint. Dip the roller nap in the paint tray and let it soak up paint. 
  3. Use the ‘W’ or Zig-Zag Pattern: Move the paint roller in a loop to ensure it gets wet properly. Follow a “W” or zig-zag pattern to apply paint on the surface. Don’t dip the roller sleeve in the paint for too long, as it leads to paint overloading and sagging. 
  4. Maintain a Wet Edge: Apply paint with a strategy to minimize wet-dry paint marks. Speed up the process and don’t coat previously dried paint again and it leads to texture and color patches.
  5. Apply in Sections: In case of large walls or ceilings, divide them into smaller sections to slide the roller evenly. It maintains the original color and minimizes the risk of dark patches.
  6. Roll in Light, Even Pressure: Press the roll cover gently to leave the paint on the substrate. Putting high pressure leads to paint dripping and ruins the final finish.
  7. Clean Immediately After Use: Don’t wait until paint dries on the roller cover. Clean the roller quickly with soap or water after applying acrylic or latex paints. Dip them in a solvent such as acetone or turpentine to remove oil-based paints and increase their lifespan. Remove them after a while and squeeze out the water. Don’t dip for too long, as it deteriorates the cardboard core and makes them unfit for reuse. 

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