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ESG or VSG? Choosing the Right Safety Glass for Loft Doors and Room Dividers (with All 5 Glass Types)

Alexander Stelzner · November 11, 2025 · 18 min read · Regensburg workshop
ESG or VSG? Choosing the Right Safety Glass for Loft Doors and Room Dividers (with All 5 Glass Types)

Standard interior doors and partitions rarely fit well - not because rooms are unusual, but because rooms simply are. Period apartments with walls that have shifted over decades, new-builds with non-standard ceiling heights, open-plan spaces that need structure without sacrificing light. Custom-made furniture solves a concrete problem: you define the dimensions, the materials, and the look. This guide covers everything you need to know before configuring a loft door or room divider with Manufaktur X - from glass types and safety glass options to taking accurate measurements and understanding what each choice actually means for your space.

Why Custom Steel-and-Glass Furniture Makes Sense

When you order a made-to-measure piece, you are not adapting your room to a product - the product is built around your room. That means:

  • Exact fit for any opening, niche, or spatial situation
  • No gaps or awkward workarounds caused by off-the-shelf sizing
  • Full design control over colour, glass type, and bar pattern
  • Lasting quality through safety glass and powder-coated steel rather than mass-produced materials
  • Style flexibility - the same product works for industrial, minimalist, Scandinavian, and vintage interiors

Every piece that leaves the Manufaktur X workshop is a one-off. There are no production runs, no stock sizes, no compromises.

The Product Range at a Glance

The collection divides into two categories: steel-and-glass products, and steel-and-solid-wood products. Knowing the difference before you start configuring saves time.

Steel-and-Glass Products

Exactly two products combine a powder-coated steel frame with safety glass:

  • Loft door - a genuine hinged interior door with a door stop (left or right), opening direction, opening angle, door handle, and hinges. The frame is powder-coated steel; the glass panels are safety glass.
  • Room divider - a fixed steel-and-glass partition wall. No door leaf, no handle, no hinges. An open walk-through passage can be incorporated as a frameless cut-out if you need access without a door.
Fixed black steel and glass room divider with transom light in bright living space

Steel-and-Solid-Wood Products (no glass)

  • Large shelf - steel frame with solid wood compartments, optional integrated wooden cabinets
  • Dining table - table top on a steel base frame
  • Coffee table - table top on a steel base frame
  • Bench - solid wood seat with steel base frame
  • Pipe shelf - steel pipe construction with solid wood shelves

None of these include glass, but they share the same core principles: oak, beech, or ash only; powder-coated steel in any RAL colour; millimetre-precise production.

Loft door - 3D-configurator, Manufaktur X
Loft door

Materials: Wood, Steel, and Glass at Manufaktur X

Solid Wood: Oak, Beech, and Ash

Only three hardwood species are used - oak, beech, and ash - chosen for their density, workability, and longevity. Species such as pine, walnut, maple, or cherry are not part of the range. More than 50 stains are available to finish the wood surface, covering everything from a light natural tone through warm honey brown to deep tobacco or near-black - all on real wood grain that remains visible.

A note on table and bench tops: dining tables, coffee tables, and benches are available either as solid glued-board tops (Leimholz - genuine solid wood, the standard option) or as veneer tops. Shelves - both the large shelf and the pipe shelf - are always solid wood with no veneer option.

Steel: Powder-Coated in Any RAL Colour

Floor-to-ceiling black steel glass partition with grid pattern dividing open living area

All steel frames and base structures go through a powder coating process - not conventional paint. Powder coating produces a finish that is scratch-resistant, uniformly even in colour, and more durable than wet paint. It is also an environmentally friendlier process because it generates no solvent emissions. Any RAL colour is available, from deep black (RAL 9005) and pure white through petrol, terracotta, and anthracite. The frame colour can be matched precisely to your interior concept.

Glass Options for Loft Doors and Room Dividers

Five glass types are available for both loft doors and room dividers:

  • Clear glass - maximum transparency, optimal light transmission, no privacy
  • Milk glass - white-matte finish, allows light through while blocking the view
  • Smoked glass - a subtle blue-grey tint, contemporary feel, slight darkening effect
  • Dark smoked glass - stronger tint, more privacy, stronger visual impact
  • Textured glass - embossed surface pattern, moderate privacy, interesting light diffusion

Each option is a single clear selection in the configurator - there are no sub-types or variable opacity levels to navigate.

Safety Glass Explained: ESG and VSG

Regardless of which glass type you choose, you also select the safety glass construction. These are two different things: the glass type determines appearance and privacy; the safety glass type determines how the glass is constructed and how it behaves under stress.

ESG - Toughened Safety Glass

ESG (toughened or tempered safety glass) is produced by heating float glass to around 620 °C, then rapidly cooling it with jets of cold air. This creates compressive stress at the surfaces that makes the glass approximately five times stronger than ordinary float glass. It is also more resistant to temperature fluctuations and surface scratching. In the workshop, the glass is cut, edged, and drilled to final dimensions before tempering - because once ESG has been toughened, it cannot be cut or drilled again. Any modification to a toughened pane would disturb the internal stress pattern and cause it to shatter. This is why precise measurement before ordering is not just recommended - it is essential. When ESG does break, it fragments into small, blunt-edged pieces rather than large shards, significantly reducing the risk of injury.

Black steel glass partition with open doorway separating living room and dining area

In our production process, ESG panels are checked for optical distortion after tempering, because the rapid cooling cycle can introduce a slight waviness visible at certain angles. Panes that do not meet tolerance are rejected before assembly.

VSG - Laminated Safety Glass

VSG (laminated safety glass) consists of two or more glass panes permanently bonded together by a flexible plastic interlayer - typically PVB (polyvinyl butyral) film. When VSG breaks, the fragments stay adhered to the film: the pane holds together rather than collapsing. For larger formats - wide room dividers, floor-to-ceiling loft doors with generous dimensions - Manufaktur X recommends VSG because the laminated construction maintains structural integrity even after impact. The glass does not create a dangerous open gap. For standard room dimensions, ESG is an excellent choice; for larger or more exposed installations, VSG adds a meaningful layer of safety. Neither alarm glass nor any other specialist glazing is part of the range.

The Loft Door in Detail

The loft door is a fully functional hinged interior door built in an industrial aesthetic: powder-coated steel frame, safety glass panels, hinges, door stop, and handle. It separates rooms acoustically and visually without making them feel closed off - light travels through the glass, and the space reads as larger than it is. In a European period apartment where the original room heights often reach 2.8 m or more, a full-height loft door becomes an architectural feature in its own right.

What You Can Configure on a Loft Door

  • Width and height to the millimetre
  • Door stop - left or right hinge side
  • Opening direction and opening angle
  • Bar pattern - number and arrangement of horizontal and vertical bars
  • Glass type (clear, milk, smoked, dark smoked, or textured glass)
  • Safety glass type (ESG or VSG)
  • Frame colour (any RAL colour, powder-coated)
  • Door handle - three designs available

Three Handle Designs

Handles are only available for the loft door - not for the room divider, which has no door leaf. The three options are:

  • Elongated - a classic bar handle with a clean horizontal line
  • Discreet - a slim, understated profile that recedes into the frame
  • Half-moon - a curved form that works as a subtle design statement

Where Does a Loft Door Work Best?

  • Living room / kitchen: connect the spaces while still controlling cooking aromas
  • Home office: acoustic separation with a visual connection - focused work without complete isolation
  • Bedroom: privacy through milk glass or textured glass, without darkening the room
  • Bathroom: milk glass or textured glass for full discretion with maximum light transmission
  • Hallway: a design statement that transforms what is often the least considered room in a home

The entry price for a loft door starts at 1,157 €. The actual price depends on dimensions, glass type, bar configuration, and other parameters - calculated instantly as you configure.

The Room Divider: A Fixed Steel-and-Glass Partition

Room divider - 3D-configurator, Manufaktur X
Room divider

The room divider is a permanent structural element, not a movable one. It divides a space without enclosing it - there is no door leaf, no handle, no hinges, and no opening mechanism. An open walk-through passage can be built into the frame as a cut-out if you need to pass between areas without adding a door. The room divider starts from 2,212 € in the standard configuration.

Typical applications include:

  • Structuring open-plan living areas without building walls
  • Separating a dining zone from a living area
  • Defining a home office within a larger room
  • Creating a visual threshold between a hallway and a living space

The same five glass types and full RAL colour palette available for the loft door apply to the room divider. Optional side panels and a top section can be added to extend the partition around a corner or up to a ceiling.

How the Manufaktur X Configurator Works

The online 3D configurator reflects every change in real time: dimensions, glass type, bar pattern, frame colour - and the price updates instantly with each adjustment. Delivery costs and lead times are shown transparently in the basket before you commit to anything.

The configuration process, step by step:

  1. Choose your product - loft door or room divider
  2. Enter your dimensions (width and height - after taking accurate measurements)
  3. Set the bar pattern (number and arrangement of horizontal and vertical bars)
  4. Select a glass type (one of the five options)
  5. Choose the safety glass type (ESG or VSG)
  6. Pick a frame colour (any RAL colour)
  7. For loft doors: set the door stop side, opening direction, opening angle, and handle design
  8. Read the live price and place your order

Technical drawing downloads are not available from the configurator. For unusual projects or bespoke requirements - irregular openings, multi-panel constructions, combined door-and-fixed-panel setups - you can upload a sketch at manufakturx.com, and the team will assess feasibility and provide a custom quote.

Black steel glass room divider with wide open walkthrough between two bright living spaces

Taking Accurate Measurements: What the Workshop Actually Sees

The most common reason a custom-made piece does not fit is a measurement error, not a production fault. You enter your exact desired dimensions directly into the configurator - not the rough construction opening. This means the measurement work is yours, and it matters.

The Core Rule: Measure in Multiple Places, Use the Smallest Figure

Walls, floors, and ceilings are rarely perfectly straight - especially in older buildings. Even a relatively modern apartment block can have openings that are a few millimetres wider at one point than another. Measure the width at a minimum of three heights (top, middle, bottom) and the height at a minimum of three widths (left, centre, right). Always use the smallest measured figure as your working dimension. Production is based precisely on the numbers you enter.

Installation Clearance for Loft Doors

A hinged door needs a small installation gap to sit and swing correctly, even when the opening looks perfectly square. Subtract approximately 5 mm per side from your smallest measured width - so 5 mm on the left and 5 mm on the right. Apply the same 5 mm at the top. This clearance allows clean installation even if the opening is very slightly out of square.

Worked example: if the smallest measured clear width is 990 mm, enter 980 mm in the configurator (two times 5 mm installation gap).

Measurement Checklist

  • Measure width at a minimum of three different heights
  • Measure height at a minimum of three different widths
  • Note the smallest figure in each direction
  • For loft doors: subtract the installation gap (approximately 5 mm per side)
  • Check the squareness of the opening with a spirit level and plumb line
Black steel glass box partition with open passage enclosing a dining table and chairs

Choosing the Right Glass Type: Transparency vs. Privacy

The glass type controls how much light passes through and how much visual privacy the door or partition provides. This table gives a direct comparison:

Glass type Transparency Privacy Typical use
Clear glass Very high None Living rooms, hallways, open-plan areas
Milk glass Diffuse High Bathrooms, bedrooms, dressing rooms
Smoked glass Medium Low Living areas, home offices, contemporary interiors
Dark smoked glass Low Medium to high Design accents, more privacy without full opacity
Textured glass Diffuse-structured Moderate Bathrooms, work areas, decorative features

Milk glass delivers the strongest privacy while still letting light pass freely - the right choice wherever discretion matters more than the view. Textured glass creates interesting light patterns through its embossed surface while offering moderate privacy. Clear glass maximises light flow and allows rooms to read as one continuous space - with no privacy at all. The choice between smoked and dark smoked often comes down to how strong a design statement you want the frame to make; both pair well with a black or anthracite powder-coated steel frame.

ESG or VSG - Deciding Between the Two Safety Glass Types

When ESG Is the Right Choice

ESG is the standard choice for interior doors and partitions in typical residential settings. It is considerably stronger than ordinary float glass - roughly five times so - and resists everyday knocks, temperature changes, and surface contact well. The fracture pattern (small, blunt-edged granules rather than large shards) means that if breakage does occur, the risk of serious injury is low. The critical point to remember: once toughened, ESG cannot be modified. All dimensions, holes, and cut-outs must be finalised before the tempering process. If you later decide you want a different height or need an extra fixing hole, a new pane must be produced from scratch. Accurate measurement before ordering is not optional - it is the foundation of a successful installation.

Floor-to-ceiling black steel glass wall with four columns separating living and dining zones

When VSG Is the Better Option

For larger formats - think a room divider spanning 3 m or a loft door approaching ceiling height in a generous open-plan space - Manufaktur X recommends VSG. The laminated interlayer keeps the pane intact after impact: no dangerous open gap, no falling shards. This structural advantage matters most where the glass area is large and a failure would be more consequential. In the configurator, you can freely choose between ESG and VSG for any product. If you are unsure which applies to your project, the room divider product page and loft door product page include further guidance, or you can contact the team directly.

Industrial Style in the Home: Why Steel and Glass Have Staying Power

The combination of slender steel profiles and clear glass panels has its roots in early twentieth-century industrial architecture - factory buildings, workshops, and the converted warehouse lofts that became a defining image of urban living. What began as pure engineering logic became one of the most enduring interior design directions of the past thirty years, and there is a straightforward reason: it works in almost any context.

Double black steel and glass doors with transom light leading from hallway to living room
  • Glass keeps spaces visually connected and lets natural light travel further into a floor plan
  • Steel provides structure, precision, and a graphic quality that anchors a room
  • Together, the combination adapts - it reads as industrial with a black frame and many bars, as minimalist with a white frame and very few, and as warmly Scandinavian with a light frame paired with an oak bench or shelf

Unlike furniture trends that date quickly, a well-proportioned steel-and-glass door or partition tends to outlast the other design decisions in a room. The frame colour can be repainted if a concept changes; the proportions and quality of the glass do not age.

Matching Loft Doors and Room Dividers to Interior Styles

  • Industrial: matte black frame (RAL 9005), clear or smoked glass, a generous bar grid - the classic loft look
  • Minimalist: slim profiles, one or two bars at most, clear glass, a neutral RAL such as anthracite or off-white
  • Scandinavian: white or light grey frame, clear glass, handle or shelf in oak as a warm contrast element
  • Vintage / retro: more bars, textured glass, darker frame colours such as olive or deep blue

The steel profiles are 3 cm wide as standard. Non-standard profile widths can be discussed on request via the sketch upload service.

Care and Maintenance: Keeping Your Loft Door or Room Divider in Good Condition

Cleaning the Glass Panels

  • Use a microfibre cloth or a soft, lint-free cloth for regular cleaning
  • A streak-free glass cleaner works for most dirt; isopropyl alcohol diluted with water handles stubborn marks
  • For milk glass and textured glass: use a soft cotton cloth rather than microfibre - microfibre can leave microscopic scratches in a matte surface over time
  • For textured glass: a soft brush helps clean the recessed areas; avoid pressing hard
  • Clean on overcast days or in the evening - direct sunlight dries the cleaner too quickly and leaves streaks
  • Never use steel wool, abrasive pads, or scouring powder on any glass surface
Full-height black steel glass partition dividing bright living room with grey sofas on both sides

Caring for the Powder-Coated Steel Frame

  • Wipe down with a damp cloth; no aggressive cleaning agents
  • Avoid abrasive products that could break down the powder-coated surface
  • Lubricate the loft door hinges once a year with a light machine oil to prevent squeaking
  • Check all fixings periodically for tightness

Caring for Solid Wood Surfaces

  • Wipe regularly with a slightly damp cloth
  • Do not allow water to stand on the wood surface
  • Use the appropriate care product for the specific finish (oiled, stained, or lacquered)
  • Avoid prolonged direct sunlight on the wood to reduce fading over time

Pricing: What Does a Custom Loft Door or Room Divider Cost?

The entry price for a loft door starts at 1,157 €. The room divider starts from 2,212 € in the standard configuration. Both prices reflect the base specification; the actual figure updates in real time as you configure dimensions, glass type, bar count, and additional options. There are no hidden fees - what the configurator shows is what you pay. Delivery costs and the production lead time of 5 to 6 weeks are shown clearly before checkout.

Current prices for all products:

ProductFromNote
Lofttür1.157 €Lowest possible option
Raumteiler2.212 €Steel + laminated glass, custom width
Großes Regal3.200 €Solid wood, steel frame, floor-to-ceiling
Esstisch1.580 €Solid wood, steel frame
Couchtisch1.155 €Solid wood, steel frame
Sitzbank1.100 €Solid wood, steel frame
TV-Board1.540 €Solid wood, steel frame
Rohrregal1.065 €Modular pipe shelf

Custom Projects Beyond the Configurator

Some projects cannot be fully described through a standard configurator. Irregular wall openings with a sloped reveal, multi-panel partitions that turn a corner, a combined loft door and fixed glass panel side-by-side in a single installation - these require a conversation rather than a form. For these situations, uploading a hand sketch or technical drawing allows the production team to assess feasibility and provide an individual quote. This service is particularly useful for:

  • Openings that are notably out of square or have unusual reveals
  • Multi-section room divider constructions
  • Combined elements - a door leaf next to a fixed glass panel within one frame
  • Non-standard profile widths or custom details

Custom-Made vs. Off-the-Shelf: A Direct Comparison

It is worth being clear about what you are comparing. IKEA and similar retailers offer interior glass elements at lower price points, and for some situations that is entirely appropriate. Where custom-made becomes the practical choice is when dimensions do not conform to standard sizes - which, in a typical European period apartment with walls that have been plastered and replastered over generations, is more often than not. The comparison below covers the dimensions that matter most:

Criterion Off-the-shelf Custom-made by Manufaktur X
Size Fixed standard dimensions Exact fit for any opening
Design Limited options Full freedom - bars, glass, colour, handle
Fit precision Compromises, often visible gaps Millimetre-accurate production
Frame colour A few standard colours Any RAL colour, powder-coated
Material quality Often composite or MDF Safety glass (ESG or VSG), powder-coated steel, solid hardwood where used
Price transparency Often unclear until checkout Real-time price display as you configure

In a new-build apartment with standardised openings, an off-the-shelf door may well be adequate. In any building with character - older construction, converted spaces, attic rooms with sloped ceilings - the standard sizes simply do not fit, and workarounds rarely look right. Custom-made is not always the most expensive option once you factor in adaptation work and the longevity of the result.

Frequently Asked Questions

Which wood species does Manufaktur X work with?

Black steel glass partition with four wide mullion panels separating living and dining areas

Only three hardwoods are used: oak, beech, and ash. Species such as pine, walnut, maple, and cherry are not available. Over 50 stains can be applied to achieve a wide range of tones on a genuine wood surface.

What is the difference between a loft door and a room divider?

A loft door is a fully functional hinged interior door with a door stop (left or right), opening direction, opening angle, hinges, and a handle. A room divider is a fixed steel-and-glass partition - no door leaf, no handle, no hinges, no opening mechanism. An open walk-through passage can be integrated into a room divider as a cut-out without adding a door.

How do I measure correctly for a loft door?

Measure the opening at a minimum of three points in both width and height. Use the smallest measured figure in each direction as your reference dimension. Then subtract the installation gap: approximately 5 mm per side (left, right, and top). The production is based exactly on the dimensions you enter in the configurator.

When should I choose VSG instead of ESG?

For larger widths or heights - for example, a room divider spanning a wide open-plan space, or a loft door approaching ceiling height - Manufaktur X recommends VSG. The laminated interlayer holds the pane together after breakage, preventing a dangerous open gap. For typical room dimensions, ESG is an excellent and very common choice. If you are unsure, the loft door page and room divider page provide further guidance.

Can ESG glass be modified after toughening?

No. ESG must be cut, edged, and drilled before the tempering process. Any attempt to cut or drill a toughened pane afterwards would disrupt the internal stress pattern and cause the glass to shatter. This makes accurate measurement before ordering genuinely essential - not just a recommendation.

Black steel glass partition with central open passage between kitchen and herringbone parquet living area

What handle options are available for the loft door?

Three handle designs are available: Elongated, Discreet, and Half-moon. Handles are exclusively for the loft door - the room divider has no door leaf and therefore no handle.

Can I download a technical drawing from the configurator?

Technical drawing downloads are not available from the configurator. The tool displays a real-time 3D preview and live pricing. For bespoke projects that require a technical drawing or detailed discussion, you can upload a sketch via the contact section at manufakturx.com.

What is the starting price for a loft door?

Loft doors start from 1,157 €. The exact price depends on the dimensions, glass type, safety glass type, bar pattern, and other configuration choices - all shown in real time as you build your specification in the configurator.

How long does production take?

Production takes 5 to 6 weeks from order confirmation. All pieces are made to order in the EU; there are no stock items. The lead time is shown clearly in the basket before you place your order.

Manufaktur X - custom furniture in steel, glass and solid wood in the 3D configurator - Raumteiler
Manufaktur X - custom furniture in steel, glass and solid wood in the 3D configurator
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