Service
Bespoke windows
High-quality wood, PVC and aluminium windows from our own workshop – for new builds, renovations and conversions.
Building your dream home and want high-quality windows? We make bespoke wood and PVC windows in our own workshop – exactly to your wishes. Whether new build, renovation or conversion: you’ve come to the right place.
We offer not only state-of-the-art window constructions, but also versions that fit perfectly into listed buildings. For PVC windows we rely on our profile supplier Kömmerling: stable, with a low Uf-value, lead-free stabilisers and a smart recycling concept.
When it comes to security, our range offers many options – from security fittings and alarm systems to security add-ons. Even retrofitting existing windows is no problem for us.
Quality that connects: Kömmerling windows
Set the highest standards for your home. Kömmerling windows stand for pioneering PVC technology, excellent thermal insulation and timeless design.
Whether new build or renovation – our solutions combine durability, security and energy efficiency at the highest level to noticeably improve your living comfort.
Materials
The right material for every requirement
Every material has its strengths. We advise you honestly on which material suits your project and budget.

PVC
Besides price, PVC scores with properties such as easy care, weather resistance and longevity. A real benefit for the homebuilder, as this material is highly durable.
- Inexpensive to buy
- Very long service life
- Easy-care material
- Low maintenance, no painting needed
- Energy-efficient designs possible
- Attracts dust particles through static charge
- No new coat of paint possible
- Can look artificial and static

PVC-alu
The combination of PVC and aluminium stands for particularly high-quality solutions. The aluminium gives the windows enormous stability – even large panes are possible – and protects the window against the weather on the outside.
- Ideal thermal protection with optimal U-values
- High weather resistance & longevity
- Very easy care, no maintenance needed
- High quality thanks to the best components
- Very high purchase price (cost-intensive)

Aluminium
Aluminium is characterised by its stability. It is also very weather-resistant, durable and easy to care for. Compared with other metals, aluminium is very light and recycles very well.
- Very stable, allows even large glass areas
- Robust & burglar-resistant
- Very resistant to weathering
- Easy care and low maintenance
- Available in many colours
- Very expensive purchase price
- High energy consumption during production
- Poorer thermal insulation

Wood
Wood is not only a very heat-insulating window material, its look also radiates warmth and creates a homely ambience. Wood is also breathable, can prevent mould and ensures good air quality.
- Renewable raw material
- Breathable for better air quality
- Radiates rustic & homely warmth
- Robust & stable, durable with regular care
- Repainting possible for a new look
- Very maintenance-intensive, regular repainting needed
- Susceptible to weather without lacquer/stain care
- High energy consumption during production
- Higher purchase cost than PVC windows

Wood-alu
The combination of wood and aluminium stands for particularly high-quality solutions. The aluminium gives enormous stability – even large panes are possible – and protects against the weather on the outside, while the warm wood look remains inside.
- Excellent stability allows very large windows
- Ideal thermal protection with optimal U-values
- High weather resistance & longevity
- Very easy care outside, no maintenance needed
- High quality thanks to the best components
- Very high purchase price (cost-intensive)
- Maintenance-intensive inside, regular repainting needed
Systems
Kömmerling profile systems

Kömmerling 76

Kömmerling 88
Design
Colours & surfaces
Foil colours, aluminium tones and wood stains – almost unlimited design options.

Foil colours with embossed surface

Foil colours with wood décor

Foil colours with metal effect

Foil colours with matt surface

Foil colours with smooth surface

Aluminium colours

Wood stains
Glazing
Glass for every requirement
From double to triple glazing with U-values down to 0.5 W/(m²K).

Double · U-value 1.0 W/(m²K)
- Improved insulation against heat loss
- Lower energy costs and environmental impact
- Minimised condensation
- Reduced draughts and outside noise
- Reduced harmful UV radiation

Double · U-value 1.1 W/(m²K)
- Good insulation against heat loss
- Lower energy costs and environmental impact
- Minimised condensation
- Reduced draughts and outside noise
- Reduced harmful UV radiation

Triple · U-value 0.5 W/(m²K)
- First-class insulation against heat loss
- Maximum comfort and sustainability
- Strong reduction of condensation
- Minimised draughts and outside noise
- Unique protection against UV radiation

Triple · U-value 0.6 W/(m²K)
- Very good insulation against heat loss
- Improves comfort and sustainability
- Reduced condensation
- Minimised draughts and outside noise
- Good protection against UV radiation

Triple · U-value 0.7 W/(m²K)
- Good insulation against heat loss
- Lower energy costs and environmental impact
- Reduced condensation
- Minimised draughts and outside noise
- Protection against harmful UV radiation
Sound insulation
Peace and quiet in your home
Special acoustic glass lowers outside noise by up to 50 dB.

A: window open

B: old window closed

C: acoustic window closed
Glazing bars
Character through bars

Internal glazing bars
Placed inside the window frame – not on the glass surface.
- Aesthetic and appealing look
- Makes cleaning the windows easier
- Cost- and energy-efficient
- Available in various styles and patterns
- Easily replaceable

Glued-on bars
Also known as applied or decorative bars: glued onto the glass surface to create the impression of divided panes.
- Attractive, individual appearance
- Versatile design options
- Easier window cleaning
- Cost-efficient solution
- Insulation is not affected

Viennese bars
A modern interpretation: built into the cavity between the panes for a smooth glass surface with no protruding elements.
- Modern and aesthetic design
- Clear view outside
- Insulation is not affected
- Long service life of the insulating glass
- Flexibility in design

Glass-dividing bars
True bars: actual divisions of the glass surfaces and an integral part of the window construction.
- Authentic appearance
- Tangible separation of the panes
- Durable and resistant
- Ideal for historic restoration projects
- Relatively high purchase cost
Glass patterns
Clear and ornamental glass
From transparent clear glass to decorative ornamental glass for more privacy.

Clear glass
- No colour distortion
- Allows a clear view outside
- Various thicknesses and tints
- Transparent and neutral

Cathedral ornamental glass
- Fascinating light effects
- Balance between aesthetics and privacy
- Available in various colour variants
- Delicate contours with a soft sheen

Chinchilla ornamental glass
- Interesting light refraction and diffusion
- Provides a degree of privacy
- Various thicknesses and colour variants
- Decorative and functional at once

Satinato ornamental glass
- Smooth, silky texture
- Privacy through diffuse light diffusion
- Available in various thicknesses
- Elegant yet subtle aesthetic

Mastercarré ornamental glass
- Exciting geometric light refraction
- Atmosphere and privacy at once
- A range of designs and textures
- An impression of artistic finesse

Silvit ornamental glass
- Translucent but only partly see-through
- Protects from prying eyes
- Available in various thicknesses
- Decorative and functional at once
Safety glass
Protection that convinces
ESG and VSG up to resistance class P4A – for the highest security.

ESG – toughened safety glass
- High strength and breaking resistance
- A range of applications
- Withstands higher temperatures
- Clear view and transparency
- Meets international safety standards

VSG glass 8 mm outer
- Increased breaking resistance through 8 mm thickness
- Plastic interlayer
- Resistant to external influences
- Improves safety and burglary protection
- Glass shards are held in place if broken

VSG glass 8 mm inner
- Increased breaking resistance through 8 mm thickness
- Plastic interlayer
- Suitable for railings or stair cladding
- Improves safety and burglary protection
- Glass shards are held in place if broken

VSG P2A
- Increased resistance to break-in attempts
- Possible reduction of insurance premiums
- Plastic interlayer
- Glass shards held in place if broken
- A range of applications

VSG P4A
- Top class of burglary protection
- Strong plastic interlayer
- Glass shards held in place if broken
- A range of applications
- Possible reduction of insurance premiums
Fittings
Security starts in the detail
From mushroom-head locking to resistance classes RC 1 and RC 2.

Mushroom-head locking
- Mushroom-head cams in hardened special steel
- Effectively resists levering
- More secure than classic roller cams
- Difficult to manipulate
- Popular for burglar-resistant windows and doors

Burglary resistance RC 1
- Four locking points
- Basic protection against break-ins
- More affordable than RC 2
- Meets burglary protection standards
- Acts as a deterrent

Burglary resistance RC 2
- Eight locking points
- Good value for money
- For increased security needs
- Meets regulations and standards
- High deterrent effect
Handles
Operation with style

Classic window handle
- From renowned manufacturers
- Timeless and functional
- In various colours and materials
- Simple, proven operation
- Minimalist and elegant design

Security handle with push button
- Child- and theft-proof
- Stylish, minimalist design
- User-friendly operation
- Robust construction for a long life
- Suitable for various window and door types

Lockable window handle
- Effective child safety
- Improved burglary protection
- Controlled access by key
- Allows controlled ventilation
- Can increase resale value
In detail
Our services in detail

Wood windows
Wood windows radiate natural warmth and create a homely, breathable indoor climate. We make them from meranti or pine – also for listed buildings.

Aluminium windows
Aluminium windows are extremely stable, weather-resistant and allow large glass areas with slim frames. Available in almost any RAL colour.

Wood-aluminium windows
The premium combination: warm wood inside, a low-maintenance aluminium shell outside. Optimal thermal insulation meets a long service life.

Bespoke windows
We make every window to the millimetre for your opening – in shape, colour, glazing and bars entirely to your wishes.

Window replacement
When replacing old windows we work cleanly and on schedule. You benefit immediately from better insulation, less noise and lower energy costs.

Windows for new builds
For new builds we supply windows to passive-house standard with triple glazing and U-values down to 0.5 W/(m²K) – energy-efficient and future-proof.
FAQ
Good to know
Do you also make windows for listed buildings?
Yes. We produce windows that fit perfectly – visually and structurally – into listed buildings, with true glass-dividing bars on request.
Can existing windows be retrofitted?
Retrofitting existing windows with security fittings or add-ons is no problem for us either.
What U-value do your windows achieve?
With our triple glazing we achieve U-values down to 0.5 W/(m²K) – ideal for energy-efficient new builds.
Interested in new windows?
Request your personal quote with no obligation – we’re happy to advise you.