A balcony is not a small patio. It sits on a structure with a weight limit, it has a waterproof layer underneath that must not be punctured, it drains to one edge or one outlet, and whatever you lay on it usually has to be carried up several flights of stairs in 25kg boxes. Those constraints narrow the field quickly, and they are the reason the balcony floor tiles conversation almost always comes down to two options: porcelain, or outdoor vinyl.
Both work as balcony floor tiles. They suit different flats, different budgets and different tenancies. This guide sets out where each one wins, then gives you a straightforward way to work out how many tiles the job needs.
What Makes a Balcony Different From a Patio Floor
Four things change the calculation compared with a garden patio.
The structure carries a load. UK domestic balconies are generally designed to a minimum imposed load under BS EN 1991-1-1 and its UK National Annex, and any finish you add sits within that allowance alongside people and furniture. On a modern flat this is rarely an issue. On a converted Victorian building or an older concrete balcony with unknown history, it is worth an engineer's opinion before you add a heavy floor.
There is a waterproof membrane below. Screwing, drilling or bonding directly into it is how balconies start leaking into the flat underneath. Any floor you add should sit on top of the membrane rather than fix through it.
Water has to leave. The existing fall and the drainage outlet were designed for the original surface height. Raise the floor and you can end up with water sitting under a door threshold instead of running off the edge.
You may not own the decision. In a leasehold flat, external alterations often need freeholder consent, and some buildings have rules about balcony finishes for fire safety reasons after the changes to building regulations on external walls. Check before you buy.
Porcelain Patio Tiles On a Balcony
Porcelain is the long-term answer. Outdoor porcelain patio tiles are made at 20mm thick, vitrified so water absorption sits at 0.5 percent or lower, and finished matt for grip. That combination survives frost, UV, barbecue fat and standing water without fading, warping or needing sealing.
On a balcony the usual method is adjustable pedestals. The tiles sit on plastic supports that rest on the existing surface, water drains freely through the joints and away underneath, and the membrane is never touched. Pedestals also let you level a floor that has a fall built into it, so you get a flat, comfortable surface with the drainage still working below. If the balcony needs attention later, individual tiles lift out by hand.
Weight is the one number to check. A 20mm porcelain tile at 600 x 900mm weighs roughly 25kg, which works out around 44 to 46kg per square metre once laid, plus the pedestals. For a typical 6 square metre balcony that is under 300kg spread across the whole slab, well within a modern design load, but it is real weight and worth confirming on an older structure.
The Axar Tiles outdoor range runs 18 products, all 600 x 900mm and 20mm, in a matt finish, across the Crystal, Eclipse, Canyan, Forest, Desert, Gemstone and Lime Stone ranges. Grey, anthracite, beige, ivory, white and tan are all covered, and prices sit between £21.60 and £23.40 per square metre. Since the same tile works on a patio and on a balcony, people running both spaces in one project usually order them together so the shades match.
Where Outdoor Vinyl Tile Flooring Makes Sense
Outdoor vinyl flooring for balconies normally means interlocking PVC or composite deck tiles that click together over the existing surface. No adhesive, no mortar, no tools beyond a knife or a small saw for the edge pieces. You can lay a balcony in an afternoon and take the whole floor with you when you move.
That last point is the real argument for outdoor vinyl tile flooring. If you rent, you cannot justify installing a permanent surface, and you may need to return the balcony to its original state at the end of the tenancy. Vinyl solves that. It is also light, at roughly 5 to 7kg per square metre, which puts it far below porcelain on structures where weight is genuinely tight.
The trade-offs are honest ones. Vinyl fades under sustained UV, and a south-facing balcony in a hot summer will show it. It gets soft and noticeably hot underfoot in direct sun. Colour and texture read as convincing from standing height and less so up close. Most outdoor vinyl systems have a realistic life somewhere between three and eight years depending on exposure, against a porcelain floor that will outlast the flat's next two owners.
Balcony Floor Tiles Compared: Porcelain VS Outdoor Vinyl Flooring
On durability, porcelain wins comfortably. It does not fade, it does not soften in heat, and frost has nothing to work with.
On weight, vinyl wins. Around 6kg per square metre against around 45kg matters on an older or lightly built structure.
On installation, vinyl wins for speed and simplicity. Porcelain on pedestals is still a manageable job, but it involves planning the layout, setting levels and handling 25kg tiles in a confined space.
On reversibility, vinyl wins. Lift and go. Porcelain on pedestals is also removable, which is worth knowing, but it is a bigger afternoon.
On cost, it depends on the timeframe. Vinyl is cheaper to buy and to fit. Porcelain costs more upfront and then costs nothing for twenty years, so on any balcony you plan to keep, the ten-year figure usually favours the tiles.
On appearance, porcelain looks like stone because it is fired, coloured and textured all the way through, rather than printed. That difference shows most on larger balconies where the eye has more surface to read.
Which Balcony Floor Tiles Suit Your Flat
If you own the flat and plan to stay, porcelain is the sensible spend. Buy once, and the floor stops being a maintenance item.
If you rent, outdoor vinyl flooring is the pragmatic choice, and there is no shame in a floor that leaves with you.
If the balcony is a roof terrace over a membrane, porcelain on pedestals is the standard specification, and it is what most terrace projects in London use.
If the balcony is small, north facing and mainly seen from inside through glass doors, either set of balcony floor tiles works, and the decision comes down to budget.
If the structure is old and the load capacity is unknown, get advice first and treat weight as the deciding factor rather than the finish.
How Many Tiles Do I Need? A Balcony Tile Calculator Without The Calculator
This is the question that stalls most orders, and you do not need a tile calculator to answer it. The maths takes thirty seconds.
Measure the balcony in metres and multiply length by width to get the area. Then divide by the coverage of one tile. A 600 x 900mm tile covers 0.54 square metres, so one square metre of floor takes about 1.85 tiles.
Add wastage. Ten percent covers a standard straight layout with a few cuts. Fifteen percent is safer on a narrow balcony where almost every tile needs trimming at one end, or if you are laying diagonally.
Two worked examples. A 1.5m by 3m balcony is 4.5 square metres, which is nine tiles, so order ten with wastage. A 2m by 4m balcony is 8 square metres, which is about 15 tiles, so order 17. At £21.60 per square metre, the second one comes to roughly £190 in materials.
Two rules that save money. Order the full quantity in a single batch, because shade varies between production runs and a top-up delivery weeks later rarely matches. And measure the balcony at both ends before you calculate, since older buildings are seldom square and the widest measurement is the one that governs your cuts.
Any tile calculator online will do the same arithmetic, but knowing the coverage figure lets you sanity check the answer rather than trusting it blindly.
Tile Shops Near me, or ordering Balcony Tiles Online
Searching tile shops near me makes sense when you want to see a finish in daylight before committing, and for a balcony you are looking at from the sofa every day, that instinct is right. Grey is not one colour, and the difference between a cool grey and a warm one only shows in person.
The practical alternative is ordering samples to your own balcony, where you can see the tile in the actual light it will live in, against your own brick or render. That beats a showroom under LED lighting.
Axar Tiles is based at Devonshire House, 582 Honeypot Lane, Stanmore, HA7 1JS, in north west London, and delivers across the UK. Delivery is free on orders over £500, which a full terrace will clear and a small balcony probably will not, and returns run to 100 days.
One logistical point that catches balcony buyers out. Porcelain arrives on a pallet by kerbside delivery, and 20mm tiles are heavy. If your flat is on the fourth floor with no lift, plan how the boxes are getting up there before you place the order.
Fitting Outdoor Tiles For Balcony Use Without Causing Damage
Whichever material you choose, three things protect the flat below.
Keep the membrane intact. No screws, no drilled fixings, no bonded adhesive straight to the waterproofing. Pedestals for porcelain, and a floating click system for vinyl.
Keep drainage clear. Leave the outlet accessible, do not block the gap along the edge, and lift a couple of tiles once a year to sweep out leaves and grit before they clog anything.
Watch the finished height. Adding 20mm tiles plus pedestals raises the floor, and if that brings the surface too close to a door threshold or above a balustrade fixing detail, you have a water path into the building. Measure the available height before ordering, not after.
Cleaning and Maintaining Balcony Floor Tiles
Porcelain needs brushing, an occasional wash with warm water and mild detergent, and clear joints in autumn. No sealing, ever, because there is nothing porous to seal.
Outdoor vinyl needs the same brushing plus a periodic lift and clean underneath, since dirt and moisture collect below the tiles and can mark the surface below over time. Check for movement and lifting after high winds too, because lightweight floors on an exposed balcony can shift.
Frequently asked questions
Can my balcony take the weight of porcelain tiles?
Laid 20mm porcelain weighs roughly 44 to 46kg per square metre, so a 6 square metre balcony carries around 270kg of tiles spread evenly across the slab. Modern balconies are designed with a comfortable margin for this. On an older or converted building where the structure's history is unknown, ask a structural engineer to confirm before ordering.
Do I need permission to tile a balcony in a flat?
Often yes. Leasehold agreements commonly require freeholder consent for external alterations, and many buildings have added rules about balcony finishes since the changes to regulations around external walls. Check your lease and speak to the managing agent before you buy anything.
Is outdoor vinyl flooring any good on a balcony?
For the right situation it is a sound choice. Outdoor vinyl tile flooring is light, clicks together without adhesive, costs less upfront and can be lifted and taken with you, which makes it ideal for rented flats. Expect fading under strong sun and a realistic life of roughly three to eight years, against decades from porcelain.
Can I lay balcony floor tiles over the existing concrete?
Yes, and on a balcony that is usually the correct approach. Porcelain sits on adjustable pedestals over the existing surface, and vinyl clicks together as a floating floor. Neither should be fixed through the waterproof membrane, because that is the most common cause of leaks into the property below.
How many tiles do I need for my balcony?
Multiply length by width in metres to get the area, then divide by 0.54 for 600 x 900mm tiles, which works out at about 1.85 tiles per square metre. Add 10 percent for cuts, or 15 percent on a narrow balcony where most tiles need trimming. A 2m by 4m balcony needs about 17 tiles including wastage.
Are porcelain patio tiles slippery on a balcony?
Outdoor porcelain is supplied with a structured matt surface made for wet conditions, which is why the whole Axar outdoor range is matt rather than polished. R11 is the usual minimum slip rating for domestic outdoor use. Ask for the technical datasheet if a specific rating is needed for the property. Polished indoor tiles should never be used outside.
Do balcony tiles need a drainage gap?
They need water to keep leaving the balcony the way it always did. Pedestal systems drain through the open joints and away underneath, so the fall built into the original slab still works. Keep the outlet clear and avoid sealing the edge gap, or water will pool and find another route.
Where can I see the tiles before ordering?
Searching tile shops near me is the usual starting point, and seeing a finish in daylight is genuinely useful. Ordering samples to your own balcony is better still, because you get to judge the colour against your own light, brickwork and furniture rather than under showroom lighting. Axar Tiles is based in Stanmore, north west London, and delivers nationwide.
Planning a balcony or terrace floor?
Measure the space, divide by 0.54, add 10 percent, and you have your order. Then browse the Axar Tiles outdoor collection to see the full 600 x 900mm range in grey, anthracite, beige, ivory, white and tan, all 20mm and all suitable for outdoor tiles for balcony, terrace and patio use. Free delivery applies over £500 and returns run to 100 days. If you want a technical datasheet or a shade check before committing, call 0203 355 1197 or message the team on WhatsApp.
