Homes with plaster walls and older finishes have character, but they also require a different approach when it comes to painting. Age, materials, and previous coatings can all affect how new paint performs. This FAQ addresses the most common homeowner questions about painting plaster walls and older surfaces so results are durable and visually consistent.
How are plaster walls different from drywall
Plaster walls are harder and less flexible than drywall. They can develop hairline cracks over time and may absorb paint differently, which makes preparation especially important before painting.
Can old plaster walls be painted safely
Yes, plaster walls can be painted successfully. The key is ensuring the surface is stable, clean, and properly sealed so new paint adheres evenly.
Why do cracks appear in plaster walls
Cracks often form due to natural settling, temperature changes, or age. Small cracks are usually cosmetic, but larger or recurring cracks should be repaired before painting.
Do plaster walls need special repairs before painting
Often yes. Cracks, loose areas, and damaged sections should be repaired with appropriate materials and allowed to cure fully before priming and painting.
Is priming necessary on older plaster
Primer is essential. It seals porous areas, improves adhesion, and helps create a uniform surface, especially when walls have uneven absorption or previous coatings.
You can explore primers and paints suitable for older walls here:
Shop Paint Collections
Can old paint layers cause problems
Yes. Older homes may have multiple layers of paint, some of which may be brittle or poorly bonded. Loose or flaking paint must be removed to prevent future peeling.
Are there concerns with very old paint finishes
In older homes, some finishes may contain materials that require careful handling. Proper assessment before sanding or scraping is important to avoid health and surface issues.
What paint finishes work best on plaster walls
Low to mid sheen finishes like matte, eggshell, or satin are commonly used. These finishes help disguise minor imperfections while still offering reasonable durability.
Does moisture affect plaster walls differently
Yes. Plaster is more sensitive to moisture than drywall. Any signs of water intrusion should be resolved before painting to prevent staining or paint failure.
Should textured or decorative plaster be treated differently
Decorative or textured plaster requires gentle preparation. Aggressive sanding or heavy rolling can damage details, so application techniques must be adjusted.
When should a professional painter be hired
Professional help is recommended when
- Plaster is cracked or unstable
- Walls are heavily layered with old paint
- Surface preparation is extensive
- Preserving original character is important
You can request painter support here:
Painter Order Form
Can Randall’s help with products for older homes
Yes. Randall’s specialists can recommend primers, paints, and preparation methods designed for plaster walls and older finishes. Learn more here:
Randall’s Services
For guidance before starting a painting project in an older home, contact the Randall’s team here:
Contact Randall’s