Fluted glass in a black steel frame door
Practical Guide · March 2026

Glass & steel
Options that shape the room

The glass specification is as important as the frame. Here is how to think about it for OC Slimline internal doors.

Why it matters

Light, privacy, and the character of the space

Steel frame internal doors are as much about the glass as the metal. Clear glass maximises connection between rooms; textured and frosted options give privacy without losing the sense of openness. In Irish homes, where daylight is precious, the right glazing makes a measurable difference to how a house feels day to day.

TDS manufactures each door to your opening, so glass type, thickness, and any acoustic or safety layers are chosen with your project — not picked from a limited shelf range.

Common choices

Clear glass

Maximum light and visual flow. The steel grid reads clearly — ideal for living spaces, hallways, and open-plan divisions where you want the rooms to feel connected.

Frosted / satin

Diffused light and obscured detail. Well suited to bathrooms, studies, and utility areas where you need separation without a solid wall.

Fluted (reeded)

Strong directional texture and privacy with a decorative, art-deco inflection. One of the most requested finishes for contemporary residential projects.

Tinted & specialist

For specific aesthetics or performance (acoustics, safety laminates), we can advise during specification and site survey.

Interior with black steel frame glass doors and natural light

The frame stays slim; the glass does the emotional work — brightness, rhythm, and calm.

Sliding and hinged configurations

Sliding doors can free floor space in tighter plans; hinged doors often feel more traditional and formal. Both can use the same glass palette — the choice is about circulation and how you use the rooms on either side.

For a deeper dive on moving light through a plan, see Bringing Light In and for industrial-era aesthetics and fluted glass in context, Industrial Style Guide.

TDS · OC Slimline

Specify glass with your opening — not from a catalogue grid.