299 Lighting · Trimless Lighting · London & Bristol
No trim. Just light.
Trimless linear lighting and trimless downlights for architects, interior designers and contractors. Plastered flush into the ceiling, with corners, shapes and made-to-measure lengths.
Explore trimless lighting →
Only the light
remains.
01 — Collections
Trimless ranges.
Plaster-in linear profiles and large trimless downlights, all available in custom configurations.
Continuous lines
Rio Recessed Trimless
Performance-driven trimless linear for continuous light lines with corners and angles, plastered flush into the ceiling.
Made in Britain
Clyde Recessed Trimless
UK-made trimless linear that integrates seamlessly into plasterboard ceilings, from standard lengths to made to measure.
Lit corners
Lopen Recessed Trimless
Trimless linear with a wide selection of lit corner sections for unbroken shapes, perfect for custom and bespoke.
Large trimless disc
Segura Recessed Trimless
A large trimless circular downlight in six sizes from 260 mm to 1200 mm, a seamless disc of light.
02 — Selector
Choose your trimless detail.
Pick a trimless type and we'll shortlist the right profile, output and installation details.
A
Trimless linear
A single, unbroken line of light cut into the ceiling.
B
Corners & shapes
L-shapes, rectangles and continuous perimeters with lit corners.
C
Trimless downlights
Large-format trimless discs like Segura, plastered in so only a calm, luminous circle remains.
D
Trimless walls & details
Trimless profiles can also be detailed into walls, bulkheads and coves for grazing light and architectural accents.
03 — Detailing
Detailing is everything.
Trimless lighting only looks effortless when it is planned early. We help with plaster-in frames, sequencing, driver access and finishing.
Detailing →
04 — Journal
Trimless lighting guides.
Practical notes on specifying, detailing and installing trimless lighting.
Guide · 5 min
What is trimless lighting?
Trimless lighting is recessed and plastered into the ceiling or wall so there is no visible frame, leaving only a clean line or disc of light.
Installation · 6 min
How trimless lighting is installed, step by step
Trimless lighting is installed by fixing a plaster-in profile to the ceiling board or framing, taping and skimming it in, decorating, then fitting the light engine and diffuser.
Installation · 5 min
Trimless lighting: getting the installation sequence right
A clear sequence of set out, profile fixing, first fix, plastering, decoration and second fix is the key to flawless trimless lighting.
FAQ
Frequently asked questions
What is trimless lighting?
Trimless lighting is recessed into the ceiling or wall and plastered in, so there is no visible frame or flange. Only the light remains.
How is trimless lighting installed?
A plaster-in profile or frame is fixed to the board or framing before skimming. The plasterer finishes up to the edge, then the diffuser or light engine goes in after decoration.
Who supplies the lighting on trimlesslighting.com?
All trimless lighting on this site is designed, supplied and supported by 299 Lighting, a UK commercial lighting design and supply specialist based in London and Bristol.
Can trimless lighting turn corners?
Yes. Rio and Lopen trimless systems support corners, and Lopen offers lit corner sections for unbroken shapes.
Is trimless lighting suitable for offices?
Yes. Trimless linear with low-glare optics delivers LG7-compliant office lighting with a seamless ceiling.
Start a project
Send us your ceiling plan. We'll detail it with you.
Book a free consultation, or send drawings for a trimless lighting layout, installation details and quote.
Enquire with 299 Lighting →