Domakihub How to Fit a Radiator Cover: A Step-by-Step Guide
Hide an ugly radiator, gain a shelf, and keep your room looking sharp — all in a weekend.
Reviewed by Domakihub home & decor pros · 2026-06-23 · 5 min read
A radiator cover is one of the tidiest upgrades you can make to a living room, bedroom, or hallway — and it costs a fraction of what a decorator would charge. The video above walks through the full process, including how to scribe the unit tight against an uneven skirting board; this article breaks down each stage so you can plan, buy, and fit your cover confidently. Whether you are sprucing up a villa in Crete, a rental apartment in Athens, or a small hotel room, the steps are the same.
Why Radiator Covers Are Worth the Effort
Exposed radiators are often the first thing that catches the eye in an otherwise well-finished room, and not in a good way. A well-fitted cover transforms that eyesore into a piece of furniture — it can double as a side table, a window seat shelf, or simply a clean white panel that blends into the wall.
In Greek holiday rentals and hotels, where first impressions matter enormously, radiator covers also reduce the risk of guests burning themselves or knocking sharp fins. That alone justifies the modest cost of materials.
Choosing the Right Cover
Radiator covers come in three broad types: flat-pack MDF units from hardware stores (the most common choice for rental properties), bespoke timber cabinets built on site, and clip-on decorative grilles that slot over the existing front panel. For most homes and rentals, a flat-pack MDF unit offers the best balance of cost, ease, and appearance.
Before buying, measure the radiator's width, height, and depth carefully. The cover must sit at least 50 mm proud of the radiator on each side and 100 mm above the top fins so hot air can circulate freely. Restricting airflow defeats the purpose and wastes energy — a real concern with rising energy costs in Greece.
How to Fit a Radiator Cover
- 1
Measure and buy the right unit
Measure your radiator's external width, depth from wall, and height including any valves at the side. Add at least 50 mm to the width on each side, 30 mm to the depth, and 100 mm to the height. Write these numbers down before ordering or buying in-store, because returning a large flat-pack is awkward. Also note the skirting board height — you will need this for scribing.
- 2
Assemble the flat-pack cabinet
Lay all parts on a clean floor and follow the manufacturer's instructions to glue and pin the carcass together. Most MDF units slot together with cam locks or dowels — hand-tighten everything before applying any adhesive, check that the unit is square by measuring diagonally corner to corner (both diagonals must match), then lock it all in place. Allow the glue to cure fully before moving the unit.
- 3
Scribe the base to the skirting board
This is the step most people skip — and it is why their cover looks gap-filled and amateur. Hold the assembled unit in position against the wall. Where the bottom front rail overlaps the skirting board, run a pencil along the top edge of the skirting to transfer its profile onto the rail. Use a jigsaw or coping saw to cut along that line, then test the fit. The cover should now sit flush against the skirting with no gap at the front.
- 4
Secure the cover to the wall
Push the cover into its final position and mark the wall through any pre-drilled fixing holes at the back or sides. Drill and plug the wall (use hammer-drill mode for masonry, which is standard in Greek construction), then screw the cover firmly in place. Do not over-tighten into MDF — two or three screws into solid wall fixings are more than enough to prevent the unit from tipping.
- 5
Fit the grille and finish
Click or slide the decorative front grille into the opening — most units use simple plastic clips or magnetic strips. Sand any exposed cut edges lightly with 120-grit paper, fill screw heads and any small gaps with fine-surface filler, and paint with two coats of water-based eggshell. Restore the thermostatic valve cap and check that the cover does not press against the valve body, as this can prevent the thermostat from reading room temperature accurately.
Rather have a pro handle it?
Get a vetted handyman pro in your city — one number, booked in EN/EL/DE.
FAQ
- Will a radiator cover make my heating less efficient?
- Not if it is sized correctly. The cover needs clear space above the radiator (at least 100 mm) and an open grille front so convection can carry warm air into the room. A well-designed cover can actually direct airflow upward more efficiently than an exposed radiator. Avoid covering the top completely — some covers include a solid top shelf, which is fine as long as the front grille is open.
- Can I fit a radiator cover over a radiator that has side valves?
- Yes, but you need to account for the valve bodies in your measurements. Buy a unit wide enough that the side panels clear the valves without pressing against them. Many flat-pack covers include a notch or cut-out template for exactly this situation. If the valves are thermostatic (TRV), make sure the sensor head is not enclosed — TRVs need free air circulation to sense room temperature correctly.
- What is the best paint to use on an MDF radiator cover?
- Prime bare MDF with a water-based MDF primer, which seals the porous surface and stops the topcoat from soaking in. Follow with two coats of water-based eggshell in your chosen colour. Eggshell is more durable and washable than matt emulsion, which matters near a heat source. Avoid oil-based gloss on MDF — it raises the grain and tends to yellow over time.