An old fireplace is often the best feature in a house — and the one most in need of dragging into the present. Whether it’s a 1930s tiled surround, a Victorian cast-iron insert buried under decades of paint, or a 1970s stone-clad monstrosity, you can make an old fireplace look modern again without ripping it out. In fact, original fireplaces add value precisely because they’re original; the trick is updating the finish, not replacing the character. I’ve modernised two fireplaces (one painted, one restored), and both cost under £300.
First: work out what you’ve got
Before doing anything, identify the fireplace: Victorian/Edwardian cast iron (often hidden under paint — the good stuff), 1930s tiled (fireplace tiles are collectible; think before covering them), 1950s–70s stone or brick (the dated ones most people want to change), or modern gas/electric inset in a tired surround. Also check: is the chimney still functional? Is there a gas supply? A chimney sweep (£60–£90) can tell you if it’s safe to use for solid fuel.
Safety first: if you’re changing anything structural (removing a surround, opening up a blocked fireplace), check whether the chimney breast is structural and whether you need building control approval. Cosmetic updates — paint, tiling, new mantels — need no permission.
Option 1: paint it (biggest impact, lowest cost)
Cost: £30–£60. Time: a weekend.
Painting a fireplace surround is transformative. The method:
- Clean thoroughly — soot and grime prevent adhesion. Sugar soap, twice, then rinse.
- Strip loose paint — scrape flaking areas; you don’t need to strip to bare metal/wood unless it’s very bad.
- Prime with a stain-blocking primer (soot bleeds through ordinary paint — Zinsser BIN is the pro choice).
- Paint with heat-resistant paint for the firebox surround (normal paint near actual flames discolours) and quality eggshell or satin for the mantel and surround.
Colour strategy: matt black on a cast-iron insert with a white or pale surround is the timeless modern look. Same colour as the walls makes the fireplace recede elegantly. Bold contrast (deep green, navy) makes it the room’s focal point. Avoid gloss white — it yellows with heat and looks cheap within a year.
For painting technique that lasts, see how to paint like a professional decorator — the prep principles are identical.
Option 2: update the hearth and surround materials
Cost: £100–£400. Time: 1–2 days.
- Retile the surround: modern large-format tiles, handmade-look zellige, or classic metro tiles over a dated 1970s surround. Tile adhesive rated for heat near the opening.
- Replace the hearth: a honed slate or granite hearth (£80–£200 cut to size) instantly modernises any fireplace. It’s the first thing the eye lands on.
- Limewash or microcement over dated stone cladding — microcement (£30–£50/m² DIY kits) gives a sleek concrete look over almost any surface.
- New mantel beam: an oak beam (£80–£200) over a painted surround is the modern-rustic look every interior magazine features. Fix it properly — mantels carry weight and get leaned on.
Option 3: change what’s inside
The firebox is often the most dated part:
- Log burner: £1,500–£3,000 installed, but transforms both the look and the room’s warmth. Check your area’s smoke control status first — many UK cities are smoke control areas requiring DEFRA-exempt stoves.
- Bioethanol fire: £200–£600, no flue needed, real flame. Less heat than a burner, but stunning and simple.
- Electric inset fire: £150–£400, modern flame effects are genuinely convincing now, and zero maintenance.
- Styled empty: candles, fairy lights, or a stack of birch logs in an unused firebox looks intentional and costs almost nothing. Sometimes the modern answer is no fire at all.
Stovax’s buying guides are useful if you’re considering a burner — sizing the stove to the room matters more than most people realise.
Styling: the finishing touches
A modern fireplace is styled, not just renovated: a large mirror or artwork above the mantel (not a tiny picture lost on a big chimney breast), a pair of simple objects rather than a clutter of ornaments, and logs or greenery for texture. Keep the mantel styling minimal — three items maximum is the designer rule. And paint the chimney breast wall a considered colour; it’s the largest surface in most living rooms.
What not to do
Don’t rip out an original Victorian or Edwardian fireplace — they’re worth £500–£2,000+ as salvage and add character (and value) that reproductions can’t match. Don’t block ventilation to a working chimney (it needs airflow even when unused). And don’t use standard paint inside the firebox — it will scorch, smell and peel.
Opening up a blocked fireplace
Many old fireplaces are blocked up — boarded over by previous owners when central heating arrived. Opening one up is straightforward but needs care. Check the chimney first: shine a torch up from below (or get a sweep to inspect) — birds’ nests, rubble and decades of soot are common. Ventilation: an unused chimney still needs airflow to prevent damp — fit a vent grille in the blocking board, or leave the flue open with a cowl on the pot.
What you’ll find: often the original fireplace intact behind the boards — Victorian inserts, tiled surrounds, sometimes beautiful. Sometimes just a builder’s opening (a plain hole) — which you can fit with a modern insert or leave as an inglenook-style feature. Structural check: the chimney breast is structural — don’t remove it without an engineer’s advice. But opening the fireplace mouth itself (removing infill brickwork within the existing opening) is cosmetic and safe. Budget £200–£500 for a professional opening-up including making good, or DIY it in a day if you’re handy — it’s mostly careful demolition and cleaning.
The takeaway
Paint the surround (£40), replace or refresh the hearth (£150), update the firebox contents (£0–£600), and style the mantel with restraint. Total: £200–£800 for a fireplace that looks like a £5,000 renovation. The character was already there — you just had to strip away the decades. If the rest of the room needs the same treatment, updating old kitchen cabinets uses the same philosophy: refresh, don’t replace.
