European manufacturer of aluminium windows, balcony doors, sliding systems and connected solutions, with production in Spain and France. Its windows stand out for their concealed sash and visual continuity between fixed and opening elements.

Survey and installation in Málaga and the Costa del Sol
K•LINE aluminium windows in Málaga and the Costa del Sol
Made-to-measure aluminium windows, balcony doors and sliding systems designed around light, slim profiles and visual continuity. With solutions such as MINIMA SLIDE, fixed elements can be integrated into the floor, walls and ceiling so the frame almost disappears.

Official image from K•LINE Spain. It is not a VentanaSol project.
Brand, product and installation
K•LINE and VentanaSol: a solution configured for your home
Made-to-measure product
Opening type, dimensions, internal and external colour, hardware, glass, security and solar control are specified for each opening. Availability depends on the system and final configuration.
VentanaSol
Advice, technical survey, proposal and installation in Málaga and locations along the Costa del Sol. Before production, we check the openings, supports, access and the real needs of the property.
Features verified against official information from K•LINE.
Selection guide
Which K•LINE window do you need?
The best solution does not depend on size alone. Available opening space, ventilation, terrace access, orientation, wind exposure and everyday use all matter.
Casement
One or two inward-opening leaves. It opens the full aperture and is suitable when there is clear space in front.
Tilt-and-turn
Combines side opening with a top ventilation position. Useful for airing a room without opening the sash fully.
Fixed or top-hung
A fixed pane prioritises light and views. A top opening can provide ventilation in small or high-level openings, subject to feasibility.
Sliding
The panels move along tracks without taking up interior space. Suitable for wide openings, terraces and indoor-outdoor connections.
Windows and balcony doors
Concealed sash and slim profiles: more glass, less frame
In a K•LINE window, the sash is visually integrated behind the outer frame. The aim is to maintain clean lines and increase the glazed area. K•LINE states up to 15% more glazed area than a traditional window with a visible sash.
- One- or two-leaf casement windows
- Tilt-and-turn opening
- Fixed panes and top-ventilation solutions
- One- or two-leaf balcony doors
- Visible or concealed hinges depending on configuration

Official K•LINE product image.

Illustrative visualisation of the continuous-floor detail. The final solution depends on the configuration and the building project.
MINIMA SLIDE · indoor–outdoor continuity
K•LINE minimalism with a threshold integrated into the floor
MINIMA SLIDE minimises the visual presence of the frame. Fixed elements can be recessed into the floor, ceiling and walls, while the floor finish can be integrated into the lower track to maintain visual continuity between the interior and terrace.
- Perimeter frame almost completely concealed in the construction
- Large glazed areas with minimal visible profiles
- Option with the floor finish integrated into the lower track
- Only the functional guide channels and brush seals remain visible
- Recessed drainage channel, with or without a grille, depending on configuration
Quick comparison
Casement, tilt-and-turn or sliding
| Solution | Best suited when | What to check |
|---|---|---|
| Casement | You want full opening, weather-tightness and convenient access outside. | Interior space required for the sash to swing. |
| Tilt-and-turn | You need frequent, controlled ventilation without opening fully. | Handle height, curtains and space above the sash. |
| Sliding | You want large glazed areas without taking up interior space. | Number of tracks, clear opening, threshold and wind exposure. |
| Fixed | Light and views are the priority and no opening is needed. | Exterior cleaning, additional ventilation and access. |
Costa del Sol
Glass and solar control: as important as the frame
In Málaga, a well-specified window must manage light, heat, noise and security. There is no single glass specification suitable for every orientation. VentanaSol assesses each façade and combines the K•LINE system with appropriate glazing.
Solar control
Helps limit solar heat gain on exposed elevations. It is specified according to orientation, glass size and external shading.
Low-emissivity glass
Reduces heat loss through the glazing. Its suitability is assessed together with solar control and the cavity.
Acoustic insulation
The noise type and suitable glass thicknesses must be assessed; performance does not depend only on the number of panes.
Laminated glass
Can improve safety in use and resistance to impact. The build-up is selected for each location.
Customisation
K•LINE colours and dual-colour finishes
The general K•LINE Spain colour range includes 30 colours and, depending on the configuration, allows an external colour to be combined with white inside. This can respect the façade design without visually darkening the room.
On-screen sample for guidance only: choose the actual colour using a physical swatch. Some finishes are available only as dual-colour options or on specific products.
Distinctive architecture
Special-shape K•LINE windows
The range includes special compositions and frames: arched balcony doors, triangles, trapezoids and multi-element assemblies. They can preserve the character of a property or resolve non-rectangular openings.
What affects feasibility
Dimensions, radius or angles, sash layout, opening, glass, colour, hardware, access and installation complexity. Every geometry must be technically validated before the final quotation.
Ask about a special shape
Official K•LINE options
ArchedTriangularTrapezoidalComposite assembly
Certain shapes may be fixed or opening. Availability is confirmed for the specific project.
Complementary options
Solar protection, insect screens and connected control
Monobloc roller shutters
Roller-shutter solutions for new build or renovation. Box integration depends on the façade, the opening and the planned insulation.
ScreenBlock, K•FLEX and K-PLISS
External screens, adjustable louvres and pleated insect screens available according to dimensions and compatibility with the window system.
K•LINE AIR
Venetian blind integrated in a protected cavity to control light and privacy. This is a specific option, not the main selling point of the window.
Smart Home
Integrated closing sensor and other connected functions where supported by the selected configuration.
Renovation and installation
Replacing old windows with K•LINE
1. Enquiry
Send us the municipality, photos, approximate dimensions and what you want to improve: heat, noise, security, opening or appearance.
2. Technical survey
We check openings, supports, shutter boxes, access, junctions, drainage and finishing requirements.
3. Proposal and installation
We define the system, glass, colour and options. Once the configuration is confirmed, we prepare the quotation and installation.
Service in Málaga, Marbella, Benalmádena, Fuengirola, Mijas, Torremolinos, Estepona and other Costa del Sol locations, depending on the project.
Real VentanaSol project
K•LINE balcony door installed on the Costa del Sol
In this video we show a K•LINE aluminium casement door installed by VentanaSol. The concealed sash and visually reduced profiles give more prominence to the glass and maintain a clean appearance from inside.
Clear answers for an informed choice
Frequently asked questions about K•LINE windows
What characterises K•LINE windows?
Their aluminium design uses a concealed sash and slim profiles to give more prominence to the glass. K•LINE states up to 15% more glazed area than a traditional window with a visible sash.
Which opening types are available?
The official range includes one- or two-leaf casement windows, tilt-and-turn windows, fixed panes, top-ventilation windows and balcony doors. Availability depends on dimensions and configuration.
Which sliding systems does K•LINE Spain offer?
The range includes 2- and 3-track sliding systems, Total Vision, MINIMA SLIDE, pocket sliding doors and lift-and-slide systems. Feasible dimensions are checked for the selected system and project.
What is a pocket sliding door?
It is a sliding door whose panels disappear inside the wall when opened. It provides a wider clear opening but requires compatible wall space and specific construction planning.
Can I choose one colour outside and another inside?
K•LINE Spain offers dual-colour finishes on certain configurations: the selected colour outside and white inside. Colour availability depends on the product.
Can arched or triangular windows be made?
The Spanish range includes arched, triangular, trapezoidal and composite structures. Dimensions, geometry, opening and glass must be technically validated.
Which glass is suitable for Málaga?
It depends on orientation, size, shading, noise and security. Solar-control glass is often considered for highly exposed façades; low-emissivity, acoustic or laminated glass may also be relevant.
Can K•LINE windows include roller shutters?
Yes. The Spanish range includes Monobloc roller shutters and different solar-protection and shading solutions. The system, opening and project compatibility must be checked.
Can the threshold of a K•LINE sliding system be integrated into the floor?
Yes. MINIMA SLIDE offers a recessed-track option with a continuous floor: the floor finish covers the fixed-frame area and reduces the visual interruption between inside and outside. Levels, waterproofing and drainage must be designed correctly.
How much do K•LINE windows cost in Málaga?
The price depends on dimensions, opening, glass, colour, hardware, shutters, home automation, access and installation. VentanaSol prepares an estimate after reviewing the project and confirming the survey.
Can I replace an old window with a shutter box?
In many cases, yes, but the box, insulation, support and finishes must be checked. The technical survey determines whether it is retained, replaced or integrated into a new solution.
Where does VentanaSol install K•LINE windows?
We work in Málaga and Costa del Sol locations such as Marbella, Benalmádena, Fuengirola, Mijas, Torremolinos and Estepona, depending on the project.
Made-to-measure quotation
Tell us which window you want to improve
Enter the municipality, property type and approximate dimensions. We will assess whether a casement, tilt-and-turn, sliding or another K•LINE configuration is appropriate.
VentanaSol showroom in Málaga
See samples and configure your K•LINE window
Visit us at C. del Alcalde Díaz Zafra, 12, Local comercial 1-C, 29006 Málaga. You can see finishes, compare solutions and discuss your project with our team before the technical survey.