Ventmann’s Plaster vent covers offer an unrivalled blend of elegance and ventilation performance. Whether renovating ac sleek modern living room or outfitting a minimalist commercial space, our invisible vents deliver clean lines and consistent air circulation—all while staying virtually unseen.
What Are Plaster Vent Covers?
Plaster vent covers are architectural ventilation panels crafted to be embedded flush into walls or ceilings and plastered over so that only subtle airflow slots are visible. Unlike standard grilles, Ventmann’s plaster covers are designed for discretion. They allow fresh air intake or exhaust airflow while vanishing into the surrounding plaster surface, ensuring an uninterrupted visual aesthetic.
This minimalist approach appeals especially to modern interiors, design-led homes, boutique offices, and upscale hospitality venues. Perfect for when form and function must coexist without compromise.
How Do Ventmann Plaster Vent Covers Work?
Ventmann’s design incorporates a low-profile frame that sits just beneath the plaster surface. The visible section—the air slots—is extremely narrow, styled to match the final plaster finish.
Key components:
- A corrosion-resistant metal or high-strength polymer core, ensuring long‑term durability.
- A slip-fit installation flange that integrates with wall or ceiling plaster.
- Finely tuned airflow openings that guarantee efficient ventilation (supply or extract) while preserving vacuum effect.
- Options for supply and extract airflow in various capacities, compatible with typical HVAC systems or integral extract fans.
Once plastered and painted, only a subtle grille line remains—allowing discreet air movement while maintaining total visual harmony.
Why Choose Ventmann for Plaster Vent Covers?
When you select Ventmann, you choose precision engineering, premium materials, and design-centric solutions:
- Superior build quality: aerospace-grade alloys or UV-stable polymers for longevity.
- Custom sizing: from tiny 100 mm diameter discs to long linear vents up to 2 metres.
- Seamless finishes: pre‑paintable or ready‑to‑finish models guarantee even surfaces.
- Expert support: design consultation included to ensure perfect integration.
- Satisfaction guarantee: 10-year warranty on structural integrity and airflow performance.
Our goal is to elevate the utility of ventilation while making it feel invisible—and dependable.

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Contact UsTypes of Ventmann Plaster Vent Covers
Ventmann offers a variety of styles to suit different architectural needs:
Round & Square Models (Retractable Considered)
- Retractable models allow fine-tuning of airflow strength or shut-off.
- Sizes range from compact 100 mm to larger 300 mm in diameter or side length.
- Ideal for wall installations near ceilings, or discreet ceiling spots.
Linear & Retractable Models
- Slim, elongated slots that may be positioned flush along ceiling junctions or in walls.
- Available in standard lengths (300 mm, 600 mm, 1200 mm, custom up to 2000 mm).
- Provide high airflow rates with minimal visual impact.
- Retractable versions offer adjustable ventilation control.
Key Benefits of Ventmann Plaster Vent Covers
Ventmann’s plaster vent solutions deliver numerous advantages:
- Invisible Integration
Blends into plaster surfaces; no bulky grilles or visible frames. - Enhanced Airflow
Optimized slot design allows high volume air transfer with low noise. - Design Flexibility
Available in various shapes, sizes, and adjustable retractable styles. - Robust Durability
Engineered to resist warping, corrosion, and aging—ideal for bathrooms or kitchens. - Easy Maintenance
Once installed, simple cleaning of slots is sufficient; internal frame rarely needs access.
Improved Indoor Air Quality
Efficient air exchange supports ventilation compliance and occupant comfort.
Plaster Vent Covers vs Traditional Grilles
Feature | Ventmann Plaster Vent Covers | Traditional Vent Grilles |
Visibility | Minimal – almost invisible | Prominent frames and slats |
Design aesthetics | Seamlessly integrated | Often detracts from décor |
Airflow performance | Smooth and quiet | May cause turbulence and noise |
Maintenance | Slot cleaning only | Requires grille removal or dusting |
Customisation options | Wide size/shape and material choice | Standard sizes and materials |
Lifecycle durability | Long-lasting, corrosion-resistant | Varies—often plastic or low-grade metal |
Ideal Applications
Ventmann’s Plaster vent covers are perfect for:
- Living rooms and bedrooms, where homeowners prefer sleek, uninterrupted wall/ceiling surfaces.
- Bathrooms & wet zones, for discreet extract ventilation near ceilings.
- Kitchens, where standard vent grilles clash with backsplash or cabinetry.
- Boutique hotels and designer offices, where every surface matters.
- Loft conversions and modern renovations, where traditional ducts must be hidden.
Design Integration Tips
- Coordinate the vent slots’ orientation with architectural lines—for example, align linear slots with join lines or wall panels.
- Match your paint or plaster finish perfectly—premade slots allow final skim plaster to blend invisibly.
- Use geometry: round vents complement curved ceilings or art features; linear vents emphasise sleek transitions.
- Consider acoustic dampers or sound‑attenuating cores if needed—Ventmann can supply optional liners that reduce hallway noise by up to 30%.
Installation Guide
Preparing the Plaster Surface
- Cut your plaster board accurately to match vent frame dimensions.
- Use spirit levels and straight edges to ensure flush alignment.
- Anchor the vent securely to the stud or substrate behind the plaster.
- Tools needed: fine saw, leveller, screw anchors when required.
Fitting and Finishing
- Apply bonding agent to vent flange, then plaster over to ground flush.
- Allow initial skim to dry completely; sand lightly.
- Check slot alignment and integrity—a minute adjustment may be needed.
- Finish paint or plaster finish to uniform texture; Ventmann offers grainless models for seamless coating.
Maintenance & Care
- Use a soft brush or vacuum attachment to gently clean dust from slots once or twice a year.
- For humid zones, wipe with a damp cloth to prevent dust accumulation.
- Inspect retractable mechanisms annually to ensure movement is smooth.
- Replace filters—if internal—every 1–2 years, depending on usage and air quality.
LSI‑Related Insights
In addition to their low‑profile design, Ventmann’s Plaster vent covers enhance acoustic privacy, maintain optimum airflow rates (up to 150 m³/h in linear models), and support indoor air quality standards such as ASHRAE and UK building regulations. Their slot width is engineered to minimize draft while delivering A‑weighted noise levels below 30 dB at nominal speed.
FAQs about Plaster Vent Covers
Q1: Are Ventmann plaster vent covers compatible with bathroom extract systems?
A: Yes, they integrate seamlessly with standard extract fans, including in-line duct fans and heat-recovery units.
Q2: Can they be painted over?
A: Absolutely. Ventmann supplies paintable surfaces matched to bespoke plaster skim finishes.
Q3: Do they require professional installation?
A: For the best finish, we recommend qualified plasterers or HVAC specialists. A DIY-savvy homeowner can also achieve excellent results with care.
Q4: What warranty comes with Ventmann products?
A: All our plaster vent covers come with a 10‑year structural and performance warranty.
Q5: Can I adjust airflow after plastering?
A: Retractable models allow manual adjustment of airflow rates even after installation.
Q6: Do they meet ventilation regulations?
A: Yes—our models conform to UK Part F ventilation standards and EU air permeability codes.

Request a free consultation or quote.
Ready to upgrade your home with seamless, invisible air vents?
Contact UsVentmann’s Plaster vent covers are the ultimate solution for design‑led spaces that demand both elegance and high performance. With invisible integration, precise airflow control, durable materials, and lasting dependability, our products are built to elevate every room.
Ready to combine superior airflow with seamless design? Explore our full range of plaster vent covers at Ventmann today, or contact our design team for a customised specification.