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Interior Room Painting Guide

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Transform your living space with this comprehensive interior room painting guide. Designed for homeowners and DIY enthusiasts, this tutorial teaches you how to properly prep your walls and apply a professional finish. You will learn essential techniques for surface repair, protecting your furniture, and achieving clean lines.

Safety Warnings

  • Ventilate the room by opening windows and doors for cross-ventilation to avoid inhaling chemical fumes from paint.
  • If no windows are available, wear a mask and consider running an air purifier.
  • Wear gloves and long sleeves when using Trisodium Phosphate (TSP) as it can irritate the skin.
  • For homes built before 1979, use a lead testing kit before sanding, as lead-based paint is toxic.

Tools Needed

Phillips #2 screwdriver — Cross-head driver for switch plate and fixture removal
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Angled paintbrush — 2 1/2-inch
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Paint roller — 9-inch cage with 1/2-inch to 3/4-inch nap cover
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Putty knife — Standard steel
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Paint tray — Standard with metal screen
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Materials

Interior paint — Latex or water-based(1 gallon per 400 sq ft)
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Painter's tape — Interior grade(1 roll)
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Drop cloths — Canvas or plastic(As needed for room size)
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Spackling compound — Standard drywall filler(1 small tub)
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Sandpaper — 220-grit(1 pack)
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Steps

1
Clear the room of furniture and decorations. Use a Phillips #2 screwdriver to remove outlet covers and light switch plates. Move heavy items to the center of the room and cover them with tarps.
2
Prepare the walls by filling holes or dents with spackling compound using a putty knife. Once dry, lightly sand the areas with 220-grit sandpaper. Wipe walls down with a sponge and soap and water (or TSP) to remove grease and grime.
3
Apply painter's tape to protect trim, windows, and fixtures, ensuring the tape is pressed flush to the surface. Lay down durable drop cloths or plastic sheeting to protect the floors.
Painter's tape Trim Drop cloth Press flush Secure tape to trim and cover floors with drop cloths.
4
Apply primer to the walls, especially if painting over a dark color or new drywall. Use the 2 1/2-inch angled brush to 'cut in' the edges and a roller for the main surfaces. Allow the primer to dry completely according to the manufacturer's instructions.
Angled Brush Paint Roller Painter's Tape Cut in edges along the tape Cut in wall edges with a brush before rolling main surfaces.
5
Prepare the paint by prying the lid open with a multi-tool and stirring thoroughly with a paint stick to ensure a uniform color and texture.
6
Paint the ceiling first to prevent splatter on the walls. Use the angled brush for the perimeter and a roller for the center, using a criss-cross stroke for coverage.
Roller cover Ceiling Wall criss-cross stroke Paint the ceiling first using a criss-cross pattern to ensure even coverage.
7
Cut in the walls by painting a 2- to 3-inch border around corners, windows, doors, and baseboards with the angled brush. Then, use the roller to fill in the wall sections using V-shaped or M-shaped motions to avoid streaks.
Cut-in border Angled brush Baseboard Paint edges first Use an angled brush to paint borders before rolling the main wall.
8
Allow the first coat to dry completely. Apply a second coat of paint to all wall surfaces to ensure uniform coverage and enhanced durability.
9
Remove the painter's tape while the paint is dry to the touch, pulling it away at a 45-degree angle to avoid peeling the fresh paint off the wall.
Fresh paint Trim board Painter's tape Pull at 45° angle Remove tape at an angle to prevent paint from peeling.
10
Clean up by washing latex brushes and rollers with warm, soapy water. Inspect the walls for missed spots and touch them up before the paint fully cures.

Pro Tips

  • Flat sheens are ideal for hiding imperfections on older walls, while semi-gloss is best for high-traffic areas like kitchens.
  • Keep a damp rag handy while painting to quickly wipe up any accidental drips.

When to Call a Professional

For ceilings with water damage, textured walls in poor condition, or rooms with very high ceilings, hire a professional painter.

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