06.04.2026 | Profiles for Stretch Ceilings

How to Choose a Stretch Ceiling Profile: Selection Guide

Profile selection guide for stretch ceilings: mounting method (wall or ceiling-mount SU profile), room height, the CLASSIC and COMFORT series with their stiffness grades (125/130 → HARD → 200), the DELTA NEO shadow-gap profile, GAMMA LED profiles, two-level and curtain-rail profiles and no-drill mounting (DELTA BOX, COMFORT BOX). A selection algorithm for installers and designers.

The stretch ceiling profile range includes dozens of models that differ in mounting method, weight, purpose and compatibility with lighting systems. Choosing the right profile for a specific project is a decision that affects installation quality, visual result and cost. In this guide we present a systematic profile selection process based on room conditions and project requirements.

Criterion 1: Mounting method – wall or ceiling

The first decision is between a wall profile and a ceiling-mount (SU) profile. A wall profile is fixed to the wall; a ceiling profile is fixed directly to the structural ceiling. It is the mounting method, not the number in the profile name, that determines how far the stretch ceiling drops below the slab.

Parameter	Wall profile	Ceiling profile (SU)
Fixing	To wall	To structural ceiling
Height loss	A few centimetres: profile height (approx. 3 cm) plus the installer’s margin	Set by the ceiling fixing, usually less than with a wall profile
Wall requirements	Must bear mounting loads	No wall requirements
Typical use	Standard rooms	Plasterboard walls, glazing, heritage interiors
Series	CLASSIC, COMFORT	CLASSIC-SU, COMFORT-SU

Rule of thumb: if the walls are brick, concrete or blockwork – use a wall profile. If the walls are plasterboard, glass or another material that cannot bear loads – use a ceiling-mount SU profile.

Criterion 2: Room height

In rooms with low ceilings every centimetre matters. With a wall profile the ceiling drops by a few centimetres: the profile height (approx. 3 cm) plus the margin the installer needs. Ceiling-mount SU profiles fixed directly to the slab help to keep this loss down. The height of CLASSIC and COMFORT wall profiles is similar – the number in the name (125, 200, 130) does not describe the ceiling drop.

Standard room height – any wall or ceiling profile
Low ceiling, every centimetre counts – ceiling-mount SU profile (CLASSIC-SU 125 or COMFORT-SU 130)

Criterion 3: Series – CLASSIC, COMFORT or DELTA NEO

The three main types of perimeter profile differ in design philosophy:

Series	Characteristics	Advantages	When to choose
CLASSIC	8 mm shadow gap at the wall; stiffness grades 125 → HARD → 200	High stability, easier levelling	Large areas, demanding projects
COMFORT	Harpoon channel that makes fitting and removing the membrane easier; masking insert; grades 130 → HARD → 200	Faster fitting and removal of the membrane	Small rooms, low-capacity walls
DELTA NEO	Shadow-gap profile, matt black	Shadow gap effect (floating ceiling)	Design projects, minimalism

What does the number in the name mean? Two naming systems coexist in the catalogue. In the CLASSIC and COMFORT series the number is approximately the mass of one running metre in grams (CLASSIC 125 ≈ 125 g/m, COMFORT 130 ≈ 130 g/m), not a distance from the slab. Profiles within a series differ in wall thickness and stiffness, not in height. In the GAMMA and GK LINE IN LED profiles the number is the approximate width of the light line in millimetres.

HARD is a stiffness grade, not an area threshold. The order of stiffness within a series is CLASSIC 125 (thinnest wall) → CLASSIC HARD (medium) → CLASSIC 200 (stiffest); likewise COMFORT 130 → COMFORT HARD → COMFORT 200. The stiffer the profile, the better it holds the membrane tension on long straight runs, in large rooms and with heavier membranes. The stiffness grade is chosen by the installer who assesses the specific object – it does not follow from a square-metre table.

Criterion 4: LED lighting integration

If the project includes LED light lines in the ceiling, dedicated LED profiles from the GAMMA series are needed in addition to the perimeter profiles.

Requirement	Recommended LED profile
Narrow contour line (approx. 20 mm)	GAMMA 20 SLIM
Standard light line (approx. 30 mm)	GAMMA 30 SLIM
Higher-power light line	GAMMA 30 HP
Vertical wall line	GAMMA 30 VERT

Perimeter profiles (CLASSIC, COMFORT, DELTA NEO) and LED profiles (GAMMA) are two independent system elements. The perimeter profile holds the membrane; the GAMMA profile creates the light line. Both types can be combined in a single room.

Criterion 5: Multi-level constructions

Ceilings at two or more heights require two-level profiles. A single profile accepts two membranes at different heights, eliminating the need for two separate perimeter frames.

Criterion 6: Concealed curtain rail

If curtains are to descend directly from the ceiling with no visible rail, a curtain rail profile is needed. It is installed in the window zone and creates a recess that conceals the curtain track.

Criterion 7: No-drill mounting

On surfaces where drilling is not possible (ceramic tiles, stone, glass), adhesive-mounted profiles are used:

DELTA BOX – glued to the wall and/or fixed to the ceiling with brackets, no drilling
COMFORT BOX – multi-function profile with no substrate penetration

Profile selection algorithm

The following decision flow leads to the right profile based on project conditions:

Can the walls bear mounting loads? Yes – wall profile. No – ceiling-mount SU profile
Is a shadow gap effect required? Yes – DELTA NEO. No – CLASSIC or COMFORT
How much force will the profile carry? Long straight runs, a large room, a heavier membrane – a stiffer grade (HARD or 200). A typical residential room – the basic variant (125/130). The installer decides
Does the project require LED light lines? Yes – add a GAMMA profile (20 SLIM, 30 SLIM or 30 HP)
Is it a multi-level construction? Yes – two-level profile
Should curtains descend from the ceiling? Yes – curtain rail profile
Does the surface not tolerate drilling? Yes – DELTA BOX or COMFORT BOX

Typical project configurations

Scenario	Perimeter profile	Additional profiles
Living room, masonry walls	CLASSIC or COMFORT – stiffness grade as assessed by the installer	–
Bathroom, tiled walls	DELTA BOX (adhesive mount)	–
Living room with LED light line	CLASSIC or COMFORT	GAMMA 30 SLIM
Hotel lobby, long straight runs	Stiffer grade: CLASSIC HARD or CLASSIC 200	GAMMA 30 HP + two-level profile
Bedroom, low ceiling	CLASSIC-SU 125 or COMFORT-SU 130	–
Living room with hidden curtain rail	CLASSIC or COMFORT	Curtain rail profile

Frequently asked questions

Can I combine profiles from different series in one room?

Yes. CLASSIC and COMFORT profiles use the same harpoon system. In one room you might use a wall profile on masonry walls and a ceiling-mount SU profile along a plasterboard wall.

Which profile is best for curves and arches?

CLASSIC 125 and COMFORT 130, with the thinnest walls, are easier to bend on curves.

Is it worth paying extra for a HARD variant?

HARD is the medium stiffness grade between the basic variant (125/130) and the stiffest one (200). It is justified on long straight runs, in large rooms and with heavier membranes. In standard residential rooms the basic versions are usually adequate – the installer decides for the specific object.

How do I calculate the number of profiles for a room?

Measure the room perimeter in linear metres. Add 5–10% for waste and cuts. Profiles are sold in 2 m lengths, so divide the perimeter by 2 and round up.

Does 2K-Trade offer help with profile selection?

Yes. Our sales team will help you select profiles based on a drawing or project description. Get in touch and send your room dimensions.

Summary

Choosing a stretch ceiling profile depends on several key factors: mounting method, room height, aesthetic requirements, LED lighting integration and substrate type. Working systematically through the criteria in this guide allows you to select the right profile without unnecessary cost or compromises. The full profile catalogue with technical data is available in the aluminium profiles for stretch ceilings section.