To choose between a recessed or surface-mounted downlight, start with the ceiling: a recessed model needs a suitable cavity, while a surface-mounted model leaves its body visible below the mounting surface. Then compare the fixings, maintenance access and the light you need. A square or round shape and the wattage alone do not answer those questions.
Recessed mounting places most of the body inside the ceiling, with the front trim finishing the opening. Surface mounting can be an alternative when there is not enough ceiling void, provided the mounting surface and connection allow that installation.
| What to compare | Recessed | Surface-mounted |
|---|---|---|
| Space required | Opening, depth and installation clearances | Visible height and space planned for the connection |
| Key measurement | Permitted cut-out, which differs from the front trim | Base, fixing points and overall height |
| Fixing | Mounting surface compatible with the clips or specified system | Anchors suitable for the ceiling and weight |
| Future replacement | Keep a compatible cut-out or adapt the opening | Check fixings, footprint and cable entry |
| Finish | Front trim close to the ceiling plane | Visible body projecting from the ceiling |
If you are replacing a light fitting, note the actual shape and dimensions of the hole. Compare them with the cut-out specified for the new model, rather than its outer width. A front trim that covers the edge does not guarantee that the body will fit or that the fixings will work correctly.
Check the condition around the opening. Damaged board, an uneven cut-out or an oversized opening may require a repair or a specific accessory. Do not assume the clips will compensate for any difference, and do not enlarge the hole before confirming the model.
Check the available void, any framing or obstructions and the space needed for the driver and connectors. The driver is the LED power supply when the design uses a separate unit. A front-view photograph does not tell you how much space the complete assembly takes up.
Follow the manufacturer's requirements for clearances, ventilation and contact with insulation. Do not choose a model advertised as slim on the assumption that it will fit between any ceiling and structural slab. If the drawing or installation depth is missing, request those details before buying.
Measure how far it will project and check the opening clearance of cupboard doors, access panels and other nearby elements. Also consider how it will look from the room entrance: the external body will be part of the finish.
Locate the electrical supply point and the fixing supports. The base can only house connections if it is designed to do so. If you plan to cover an old hole, verify that the anchors will grip sound material; covering the opening does not prove that the fitting can be secured there.
Calculate the full cost: light fitting, compatible accessories, fixings, labour and any repairs. Surface mounting may avoid a large cut-out, but it does not necessarily eliminate drilling or wiring work.
Once you have established that the fitting will fit, compare luminous flux, colour temperature, light distribution and dimming if you need it. Two units with the same wattage can produce different results. Do not decide how many fittings a room needs from its floor area alone: height, finishes and activities all matter.
The guide to LED spotlight beam angles helps explain light distribution. To assess future replacements, also see integrated LEDs or replaceable bulbs. The diffuser and mounting type alone do not guarantee freedom from glare.
Imagine a kitchen with a square opening and an old light fitting. You can compare the 20 W square recessed downlight with the 20 W square surface-mounted downlight. Those details appear in the catalogue; they do not confirm that the models are interchangeable.
If neither option fits without adapting the ceiling, ask the installer to assess the alteration before ordering. If you are actually looking for a large panel with a frame, see how to choose a surface-mount kit for an LED panel.
A selection from the catalogue relevant to this decision. Check the product information and variant before buying; photographs do not replace a drawing or confirm compatibility.
An option for comparing a recessed solution: check the actual cut-out, depth and fixings before ordering. The image shows a pack presentation; choose and confirm the number of units in the variant.
View product details and options
An alternative mounted below the ceiling. Check the base and available anchoring points; it is not automatically compatible with an existing opening. The quantity depends on the selected variant.
View product details and optionsInstallation must be carried out by qualified personnel, with the power disconnected and absence of voltage verified, following the product instructions.
Only when the manufacturer provides for that mounting method or specifies a compatible accessory. The LEDVANCE downlight technical catalogue documents options for specific ranges; that compatibility does not extend to other models.
Not necessarily. It may avoid the opening needed to house the body, but appropriate fixings and a cable entry are still required.
It depends on how the fitting and its power supply are removed. Check the actual access and keep the model reference and instructions.
Only with explicitly confirmed compatibility. The same wattage or a similar connector is not enough to select the new fitting's power supply.
Obtain those measurements with the installer's help before choosing. Then compare LedsCome LED downlights with the requirements you have noted.
For additional reference, see the instructions for a LEDVANCE surface-mounted light fitting. To continue preparing your purchase, return to the lighting guides.
