Plastering is a key step in creating professional, high-performing commercial interiors. More than just a way to cover walls and ceilings, the right internal plaster can improve a space’s durability, acoustic quality, hygiene, and visual impact.
At BSG Commercial, we deliver tailored plastering solutions for commercial spaces, healthcare facilities, educational spaces, retail stores, hospitality environments and more. Our experienced team uses traditional and modern methods to meet the practical and aesthetic needs of each project.
In this guide, we’ll explore the main types of internal plastering finishes, their application, and expert tips for maximising the benefits of your plastered surfaces.
Types of Internal Plaster Finishes
Internal plastering is about achieving a smooth, strong, and attractive surface that enhances the space’s performance and presentation. Here are the most common finish types used inside commercial buildings.
1. Skim Coat Finish
A skim coat involves applying a thin layer of finishing plaster over plasterboard or existing plaster to create a smooth, clean surface ready for paint or wallpaper.
- Materials: Gypsum-based finish plaster
- Best for: Offices, healthcare spaces, classrooms, retail units
- Finish Look: Sleek, modern, paint-ready
2. Float and Set
Used on masonry walls, this two-coat system consists of an undercoat (typically bonding or brown plaster) followed by a finishing skim coat. It helps level uneven surfaces.
- Application: Hand-applied or machine-assisted
- Use Cases: Refurbs, structural walls needing levelling
- Finish Look: Durable and flat
3. Lime Plaster Finish
This breathable and flexible plaster is ideal for heritage and conservation projects. It allows moisture to evaporate naturally and is resistant to cracking.
- Ideal for: Older buildings or projects focused on sustainability
- Bonus: Naturally antimicrobial and low-VOC
4. Decorative Plaster Mouldings
These ornamental features, such as cornices, ceiling roses, and panel mouldings, add classical character to commercial interiors, especially in hospitality, arts, or boutique retail environments.
- Crafted from: Gypsum casting plaster
- Style Tip: Works well in branded feature zones or luxury interiors
5. Acoustic Plaster Systems
This specialised internal plaster is designed to absorb sound. It resembles a standard smooth plaster finish but significantly reduces noise levels.
- Use Cases: Meeting rooms, hotels, lecture halls, restaurants
- Key Feature: Seamless look with acoustic performance
Types of Plaster by Material
Understanding plaster materials is essential for achieving durability, optimising drying time, and ensuring successful interior application.
Gypsum Plaster
- Lightweight, fast-drying, and ideal for smooth finishes
- Best for: Walls and ceilings in dry interiors
Lime Plaster
- Breathable and flexible, great for managing humidity and reducing cracks
- Best for: Heritage restorations or wellness-conscious spaces
Bonding and Browning Undercoats
- Used as base layers under finish plaster on masonry
- Best for: Float and set applications
Key Benefits of Internal Plaster Finishes
More than just a finished surface, internal plastering enhances the performance, safety, and enduring value of your commercial interiors. Here’s how:
1. Exceptional Durability
Quality plasterwork provides a robust layer of protection against everyday wear and tear.
- Resists scuffs, scratches, and minor impacts.
- Ideal for high-traffic zones such as corridors, lobbies, and reception areas.
- Helps maintain a polished appearance over time, reducing the need for frequent repairs.
2. Fire and Moisture Resistance
Modern plaster systems can be tailored to meet specific safety and environmental requirements.
- Fire-rated plasters enhance building safety and meet regulatory standards.
- Moisture-resistant options are available for kitchens, bathrooms, and utility areas when paired with appropriate paints or sealants.
- Supports a healthier and more resilient interior environment.
For further reading on moisture control best practices in building design and maintenance, refer to the EPA’s Moisture Control Guidance for Building Design, Construction and Maintenance.
3. Visual Appeal
Plastering delivers a clean, uniform finish that elevates the look and feel of any space.
- Smooth skim coats provide a refined base for paint or wall coverings.
- Decorative mouldings and finishes add elegance and depth in client-facing environments.
- Consistency across walls and ceilings enhances the overall design quality.
4. Improved Acoustic Comfort
Internal plaster can contribute to a quieter, more productive interior atmosphere.
- Acoustic plaster systems absorb sound and reduce reverberation.
- Beneficial in offices, hospitality venues, classrooms, and healthcare settings.
- Supports noise control standards and promotes comfort for building users.
These acoustic benefits align with NIOSH’s recommendations for maintaining workplace noise exposures at or below 85 dBA over an eight-hour workday.
How to Choose the Right Plaster Finish for Your Space
Selecting the right plaster finish isn’t just about looks; it’s about performance, practicality, and the experience your space delivers. Here are the key factors to weigh when planning your internal plastering:
1. Surface Condition
Consider the type and condition of the wall or ceiling surface.
- New plasterboard is ideal for skim finishes.
- Masonry or blockwork may require a base coat and float-and-set method.
- Previously plastered surfaces might just need a refresh or repair skim.
2. Purpose of the Space
Think about how the space will be used and what performance demands it will face.
- Corporate offices typically suit clean, smooth finishes that support branding and professionalism.
- Schools, hotels, or healthcare environments may benefit from acoustic plaster to reduce noise and enhance comfort.
- Retail and hospitality spaces might call for durable or decorative finishes that reflect brand identity.
3. Design Vision
The plaster finish should complement your interior style.
- Choose sleek, smooth finishes for modern, minimal environments.
- Choose textured, lime-based, or decorative mouldings for character-rich or heritage-inspired spaces.
4. Project Timeline & Budget
Balance aesthetic goals with time and cost considerations.
- Skim coat plastering is fast, affordable, and highly versatile, making it ideal for tight schedules.
- Decorative elements or specialist systems (e.g., acoustic or lime plaster) require more time and craftsmanship, which can increase overall investment.
Finishing Tips for Interior Plastered Walls
Once plastering is complete, the finish you choose can define the style and functionality of your commercial space. Here are some tips from our experts at BSG Commercial:
1. Use Chalk or Lime Paint for a Soft, Natural Look
- Adds depth and a tactile finish to smooth plaster.
- Low-VOC options are available for wellness-focused interiors.
2. Add Subtle Texture with Trowel or Roller Techniques
- Ask your plasterer to apply light stippling, swirl, or drag textures before the final set.
- This can create a warm, artisan feel ideal for hospitality or boutique spaces.
3. Go Monochrome for Modern Elegance
- Match plaster tone and paint colour for a seamless, architectural look.
- Works beautifully in open-plan offices or gallery-style showrooms.
4. Use Feature Walls to Showcase Brand Colours or Materials
- Combine smooth plaster with timber panels, stone, or chalk-finish paints to highlight key zones.
5. Maintain with Breathable Paints
- Choose finishes that allow the plaster to “breathe”, especially with lime or acoustic plaster.
Conclusion
Internal plastering is essential for both the form and function of commercial spaces. Whether you’re aiming for modern minimalism, acoustic control, or classical elegance, selecting the right finish and material is key to a successful outcome.
At BSG Commercial, we work closely with clients to deliver commercial building projects on time and on budget. From fast-track commercial fit-outs to detailed refurbishments, our team ensures every finish performs and impresses.
Need expert help on your next project? Contact us today for advice and a competitive quote.