The opening, fully resolved. Sliding doors in steel and glass.

A top-hung system suspends the panel from a ceiling or header track — there is no floor guide rail, which means the floor surface runs uninterrupted beneath the door. This is the preferred option in premium interiors where continuity of the floor finish matters. A floor-guided system uses a track or channel in the floor to keep the panel aligned. It is structurally more straightforward in some configurations, but the visible floor element is a compromise for many projects. We advise on which is right for each opening during the specification stage.

Yes — exterior sliding doors are one of the most requested applications on the Costa del Sol, where connecting a living space to a terrace or garden is often the central design intention of a renovation or new build. For exterior use, the system needs certified thermal performance, weather sealing and hardware rated for exposure. Royal Design Marbella installs Sky-Frame and MHB systems for these applications — both are engineered specifically for exterior use, with certified thermal and weather resistance. We are the exclusive distributor for both on the Costa del Sol.

Sky-Frame is a frameless aluminium system — the glass panel moves without a visible perimeter frame, creating the impression that the glass floats in the opening. It is the right choice when the design intent is to make the boundary between interior and exterior disappear. MHB uses a slim solid steel frame as part of the design — precise, visible and architecturally considered. It is the right choice when the steel itself is part of the design language, not something to be hidden. Both are certified for exterior performance. The choice depends on the design intent, not on one being better than the other.

Yes — Royal Design Marbella is the exclusive distributor for Sky-Frame on the Costa del Sol. We supply and install Sky-Frame aluminium systems directly, without going through a third party. If your architect has already specified Sky-Frame, we work from that specification and manage the supply, installation and coordination with the rest of the build programme. Having the exclusive distributor as the single point of responsibility removes a layer of coordination that would otherwise sit on your project manager's desk. The same applies to MHB systems.

For bespoke interior steel systems, single panels up to approximately 1,800–2,000mm wide are achievable depending on the glass specification and track system. For Sky-Frame aluminium, panels up to 3,000mm wide per leaf are possible within the certified system parameters. For MHB steel, panels up to 3,600mm wide are achievable without structural reinforcement, thanks to the SL30-ISO® profile system. The practical limit in each case is a combination of glass weight, track load rating and the structural conditions of the opening. We confirm this as part of the specification process.

The glass specification depends on the application. For interior systems: clear toughened is standard; laminated, satin, tinted or acoustic-grade glass are available where the project requires them. For exterior systems: thermally insulated double-glazed units with a thermal break are standard, and triple-glazed options are available in Sky-Frame configurations. The glass specification is confirmed as part of the technical design stage — not selected from a catalogue at the end.

This is how many of our projects run. Many of our clients are based in the UK, Scandinavia or Central Europe and manage their Costa del Sol projects at a distance. We start with a detailed brief, confirm every element of the specification in writing before fabrication begins, and coordinate directly with whoever is managing the site — your project manager, main contractor or interior designer. You do not need to be present. You need to be confident that the person managing your project understands it.

Working with architects and interior designers is where we spend most of our time. Your designer handles the design intent and the client relationship — we handle the technical development, fabrication and installation. We work from their drawings, respond to technical questions with the detail they need, and flag any issues during the specification stage rather than on site. We do not need to be in every conversation, but we keep the right people informed at every stage.

For bespoke interior steel systems, we offer matte black, dark anthracite and brushed steel as standard, with bespoke RAL matching available. For Sky-Frame aluminium systems, the finish range includes standard and premium anodised and powder coat options determined by the system specification. For MHB steel systems, Qualisteelcoat-certified surface treatments are available, including bronze and precious metal finishes. Finish is confirmed at the specification stage and applied consistently across frame, track and hardware.

The more specific you can be, the faster and more useful our response will be. Ideally: architectural drawings or a dimensioned sketch of the opening, the location of the project, whether the application is interior or exterior, and the design intent in a sentence or two. If you have a finish or glass preference, include it. If you do not have drawings yet, a description of the project type, approximate dimensions and what you are trying to achieve is enough to start a useful conversation. Send us what you have and we will take it from there.