The frame is easy to get right. But it’s the roof that most people get it wrong.
Some buyers pay extra for a louvred pergola when a fixed polycarbonate roof would have suited them better. Then there are those who opt for a polyester fabric roof for aesthetic reasons, but find out that their back garden space isn’t well-covered for such a roof. And plenty of people ask for a “waterproof pergola” when the real issue is side rain, drainage or wind, not just the roof above their head.
Here is a review of the different metal pergola roofs – electric louvred roof, polycarbonate, polyester fabric and open roof – comparing their features and capabilities.
Quick answer: which metal pergola roof is best?
The best metal pergola roof depends on how you use the space.
For maximum control, choose an electric louvred pergola. For constant overhead rain cover while keeping daylight, choose polycarbonate.
For seasonal shade on a tighter budget, fabric can work well. If you mainly want structure, lights or climbing plants, an open roof may be enough.
| What you mainly want | Best roof type | Why it works | Watch out for |
|---|---|---|---|
| Adjustable shade and rain control | Electric louvred roof | Opens for sun, closes for shelter | Costs more and needs safe outdoor electrics |
| Light rain cover and daylight | Polycarbonate roof | Fixed cover without making the patio too dark | Needs proper run-off and cleaning |
| Summer shade on a lower budget | Polyester fabric roof | Softer look, simpler shade | Less useful in heavy rain or exposed wind |
| Structure, lights and planting | Open roof metal pergola | Simple, airy, easy to dress | Not a rain shelter |
| Privacy and side wind protection | Roof plus side panels | Helps stop wind and overlooking | Adds wind load and can feel enclosed |
If you are still at the early browsing stage, start with the full Metal Pergolas collection. If you already know the roof style you want, it makes sense to compare Louvered Pergolas, Pergolas With a Polycarbonate Roof and Polyester Fabric Roof Pergolas separately.
What actually matters when choosing a metal pergola roof?
A pergola roof is not just about shade!
In a UK garden, the roof affects how often you use the space, how dry the furniture stays, how much light reaches the house, how the frame handles wind, and how much cleaning you need to do.
There are five things to think about before choosing.
1. How much rain cover do you really need?
Light rain and proper wet-weather use are different. A fixed polycarbonate roof gives constant overhead cover. A louvred roof can close when needed, but rain performance depends on the design, seals, drainage and wind direction.
Fabric roofs are usually better for shade and lighter showers than proper rain shelter. An open roof is not designed to keep rain off at all.
Be honest here. If you want to leave cushions, dining chairs or a BBQ prep area outside most of the year, you need more than decorative shade.
The new louvered 3m x 3m pergola we offer comes with LED lights and a handy remote to control the roof. We can deliver nationwide for free in 2-3 days.
2. Is your patio exposed to wind?
Wind changes everything.
A roof gives the wind something to push against. Side panels add even more resistance. That does not mean roofed pergolas are a bad idea. It means the base, fixings and position matter.
A sheltered patio by the house can handle different choices to an exposed new-build garden with low fences and no mature planting. If your garden gets gusty, read our guide which covers whether or not you can put a metal pergola on patio slabs, decking or grass before committing to a roofed or panelled design.
Check out our metal pergolas with side curtains for added privacy and shade from the wind.
3. How much daylight do you want to keep?
A covered pergola near the back of the house can affect how much light enters the kitchen or living room.
Polycarbonate is actually useful because it lets light through. Louvres can open when you want more brightness. Fabric roofs give softer shade, but darker fabrics can make the area feel more enclosed.
This matters most if the pergola sits outside bifold doors, patio doors or a north-facing room.
This covered polycarbonate roofed pergola has detachable curtains - perfect for lean to's.
4. Do you want shade all day or just at certain times?
A south-facing patio may need proper shade during the day. A shadier garden may only need a frame to define the seating area.
If your garden gets harsh sun at lunchtime but feels lovely in the evening, a louvred roof gives more control. If the spot is already shaded, paying extra for adjustable louvres may be overkill.
So if your garden gets harsh sun at lunchtime but feels good later, a louvred roof gives you more control. You can always close or tilt the blades when the sun is strong, then open them back up when you want light and airflow. But if the spot is already shaded for most of the day, paying extra for adjustable louvres may be overkill. In that case, spend the budget on better sizing, a stronger base, side screening, lighting or furniture you’ll actually use.
5. What will annoy you later?
This is the bit product pages rarely spell out.
| Roof type | People like it because | It can annoy you because |
| Electric louvred | Flexible, modern, good control | Costs more, has moving parts, needs electrics |
| Polycarbonate | Constant cover, keeps light | Leaves and dirt show, run-off needs managing |
| Fabric | Softer look, usually cheaper | Can flap, stain, sag or need retracting |
| Open roof | Simple and airy | No real rain protection |
| Side panels | Privacy and wind shelter | More enclosed feel, more wind pressure |
None of these are deal-breakers. They are just the realities to know before buying.
Electric louvred pergolas: best for control
An electric louvred pergola is usually the most flexible metal pergola roof. The roof is made from adjustable slats, or louvres, that can open, close or sit somewhere in between.
On a bright day, you can open the louvres for sun and airflow. When it gets too hot, angle them for shade. If rain starts, close them for more shelter.
That flexibility is the main reason people choose Electric Louvered Pergolas.
Where louvred roofs work best
Louvred pergolas are strongest in gardens where the weather changes through the day.
That is most of the UK, really.
They suit:
- South-facing patios that get too hot in summer
- Dining areas where you want shade at lunchtime but light later
- Modern patios beside the house
- Outdoor sofa areas used across spring, summer and early autumn
- Larger setups where the pergola is a main garden feature
- People who want a cleaner, more premium finish
They also work well over a 4m x 3m layout. A [4m x 3m Metal Pergola] with a louvred roof can feel like a proper outdoor seating or dining zone, not just a canopy over a table.
Where louvred roofs are less suitable
A louvred roof may not be worth the extra cost if you only want cheap summer shade. It is also more involved than a basic roof because there are moving parts and, for electric versions, a power supply.
The base needs to be level and the frame needs to sit square. If the pergola is twisted because the patio is uneven, the roof mechanism may not behave as it should.
You also need safe outdoor electrics. If the pergola has electric louvres, lights, heaters or sensors, get the power supply planned properly. Outdoor electrics and “that extension lead will do” is not a good mix.
Is a louvred pergola waterproof?
It is better to think of it as weather-controllable rather than fully waterproof in every situation.
A good louvred roof can give strong overhead rain cover when closed, especially if the design includes drainage channels. But wind-driven rain can still come in from the sides. Leaves and dirt can also collect in channels, so some cleaning is still needed.
If you want the most flexible roof and you are happy to pay more for it, louvred is usually the best choice. If you just want a simple fixed rain cover, polycarbonate may be the better-value option.
Polycarbonate roof pergolas: best for constant rain cover and daylight
A polycarbonate roof pergola has fixed roof panels that let light through while giving overhead shelter. It is one of the most practical choices for UK patios because it deals with a very ordinary problem: you want to sit outside even if the weather is a bit questionable.
Pergolas With a Polycarbonate Roof are especially useful near the house, over dining areas, or anywhere you want to keep the patio brighter than a solid opaque roof would allow.
Above shows one of our polycarbonate roof pergolas in action.
Where polycarbonate roofs work best
Polycarbonate makes sense if you want:
- Constant overhead cover
- Light rain protection
- Daylight through the roof
- A more affordable alternative to electric louvres
- A covered dining area
- A roof that is always “on” without adjusting anything
It is good for people who do not want to think about opening or closing a roof. It is just there, doing its job.
A polycarbonate roof can be a strong fit for a 3m x 3m Metal Pergola over a compact dining set, or a 4m x 3m Metal Pergola where you want more comfortable family seating.
What polycarbonate does NOT solve
Polycarbonate gives overhead cover, not full enclosure.
If rain is coming sideways, it can still blow under the roof. If the patio is exposed, you may need side protection as well. That is where [Metal Pergolas With Side Panels] can be useful, especially on the wind-facing side.
The other thing is run-off. Rain needs somewhere to go. A roof without sensible drainage can drip in annoying places or send water towards the wrong side of the patio.
And yes, it needs cleaning. Leaves, algae, dust and bird mess are more visible on a clear or translucent roof than on a darker material. Not every week, but it will need attention.
Will a polycarbonate roof make the pergola look like a carport?
It can, if the rest of the setup is badly done.
This is where styling matters. A polycarbonate roof works best with a clean metal frame, decent furniture, tidy guttering and planting around the edges. If the area underneath becomes a dumping ground for bikes, storage boxes and half-empty compost bags, it will feel like a utility cover.
Used well, it is a practical patio roof. Used badly, it can look like a lean-to you forgot to finish.
Our popular polycarbonate hard top pergola in action.
Polyester fabric roof pergolas: best for seasonal shade
A polyester fabric roof is the softer, simpler option. It is usually chosen for shade rather than serious all-weather use.
Polyester Fabric Roofed Pergolas work well in summer seating areas where you want to take the glare off the patio without making the space feel too solid or permanent.
This double-tiered top canopy in beige is a great addition to a UK garden.
Where fabric roofs work best
Fabric roofs suit:
- Summer seating areas
- Softer garden styles
- Smaller patios
- People working to a tighter budget
- Gardens where heavy rain cover is not the main aim
- Seating areas that feel too harsh in direct sun
A fabric canopy can make a metal frame feel less hard. It works nicely with rattan-style furniture, planting, gravel, decking and informal dining setups.
For a small garden, a fabric roof on a 3m x 3m pergola can be enough. It gives shade without making the patio feel overbuilt.
Where fabric roofs struggle
Fabric is not the best option for very exposed gardens. It can flap in wind, collect dirt, stain, sag if water pools, or need retracting/removing depending on the design.
This does not make fabric a bad choice. It just means it needs the right garden.
A sheltered patio? Fine. A windy corner with no planting, no fences and constant gusts? I’d be careful.
Fabric also needs more seasonal thinking. You may need to clean it, let it dry properly, or protect it during rough weather. If you want a roof you can mostly forget about, look at polycarbonate or louvred designs instead.
Is fabric good enough for rain?
For shade and the odd light shower, yes, depending on the product. For reliable rain cover, not usually.
If the buyer’s main phrase is “I want to keep the dining area dry”, fabric would not be my first suggestion. If they say “I want the patio to feel cooler and softer in summer”, fabric makes more sense.
That distinction matters.
Open roof metal pergolas: best when you want structure, not full shelter
An open roof metal pergola does not pretend to be a rain cover. It gives the garden structure, shade potential, somewhere to hang lights, and a frame for planting or screening.
This is a good choice if you want the patio to feel more finished but do not need a full roof.
Where open roof pergolas work well
Open roof metal pergolas suit:
- Decorative garden zoning
- Seating areas that do not need rain cover
- Pergola lighting ideas
- Climbing plants
- Patios that already feel sheltered
- Gardens where a solid roof would block too much light
They also work well if you want a low-maintenance frame and plan to soften it with planting. Metal gives the structure; plants, furniture and lighting make it feel less stark.
If you want to use the area in drizzle, an open roof will not help much. It may give partial shade depending on the frame design, but it is not the right choice for wet-weather dining.
Also, climbing plants take time. A bare open pergola can look a bit unfinished for the first year unless you dress it with lights, planters or furniture.
Choose open roof if you want definition and style. Do not choose it if you are trying to keep cushions dry.
Should you add side panels to a roofed metal pergola?
Side panels can make a bigger difference than the roof, especially in UK gardens where the weather often comes in sideways.
A roof stops overhead rain and sun. Side panels help with wind, privacy and low-angle rain.
Metal Pergolas With Side Panels are worth considering if:
- Your patio is overlooked
- Wind comes across one side of the garden
- You want to use the pergola in the evening
- The pergola is for a hot tub
- You want more of a sheltered outdoor room feel
- The site is open and exposed
But side panels are not automatically better. They can make a small pergola feel tight, and they add more surface area for wind to push against. So the fixing surface and pergola position matter more.
The best setup is often partial screening. One or two protected sides, not every side closed off.
For example, if the wind comes from the left and the garden view is to the right, screen the left side and keep the right open. Sounds simple, but people often over-screen and then wonder why the space feels boxed in.
Which metal pergola roof is best for UK rain?
For rain, the best options are usually polycarbonate or electric louvred roofs.
Polycarbonate gives constant overhead cover. It is simple and dependable, provided the roof is installed with sensible run-off. It is good for keeping a patio table drier, protecting furniture from light rain, and making the space less weather-dependent.
Electric louvred roofs give more control. You can open them when dry, close them when rain starts, and adjust them for shade. They are usually the better premium option if you want flexibility.
Fabric roofs are less suitable if rain cover is your main reason for buying. Fine for shade, less convincing as a wet-weather solution.
Open roofs are not rain covers.
| Rain need | Best option |
| Light rain over a dining area | Polycarbonate roof pergola |
| Adjustable cover and shade | Electric louvred pergola |
| Occasional summer showers | Fabric roof pergola |
| No rain protection needed | Open roof metal pergola |
| Side rain is the issue | Add side panels or change position |
A small note here: “waterproof” is often used too casually. Even with a covered pergola, rain can still blow in from the sides. If the patio is exposed, the roof alone will not do all the work.
Which roof is best for wind?
There is no roof type that makes wind irrelevant.
For windy gardens, the safest approach is to think about position, fixing and side exposure before roof style.
An open roof catches the least wind. Fabric can be fine in sheltered spots but may struggle if exposed. Polycarbonate and louvred roofs are more substantial, so they need proper anchoring. Side panels can help comfort inside the pergola, but they also increase wind load on the frame.
If your garden is windy, ask three questions:
- Where does the wind usually come from?
- What will the pergola be fixed into?
- Are we adding panels or a roof that gives the wind more to push against?
A [Metal Pergola With Side Panels] can be excellent in the right position. But if the pergola is poorly fixed onto loose slabs, the side panels make the weakness worse.
This is why base preparation matters. A roof comparison is only useful if the pergola is fixed properly underneath.
Which roof is EASIEST to maintain?
None of the roof types are maintenance-free. Some are just easier to live with.
| Roof type | Maintenance level | What you’ll likely need to do |
| Open roof | Low | Wipe frame, clear leaves, check fixings |
| Polycarbonate | Medium | Clean panels, clear debris, check drainage |
| Fabric | Medium | Clean fabric, dry properly, retract/remove if needed |
| Electric louvred | Medium | Clean louvres/channels, check moving parts and electrics |
| Roof with side panels | Medium | Clean panels/screens, check wind-facing fixings |
Open roof is the simplest. Polycarbonate is straightforward but shows dirt. Fabric needs care to stop it looking tired. Louvred roofs need occasional cleaning around blades and drainage channels.
The important thing is expectation. If someone wants a pergola that stays perfect with no cleaning, they will be disappointed. Outdoor products live outside. They get leaves, pollen, rain marks, dust and the odd bird choosing violence.
A quick wash now and again is normal.
Best metal pergola roof by garden situation
This is probably the most useful way to choose. Start with the garden, then pick the roof.
| Garden situation | Best roof choice | Why |
| Small sunny patio | Fabric or louvred | Shade without making it feel too heavy |
| Small patio used for dining | Polycarbonate or louvred | More reliable cover for furniture |
| Large family patio | Louvred or polycarbonate | Better for regular use |
| Windy new-build garden | Roof plus careful side panel use | Side shelter may matter more than roof type |
| Patio near kitchen doors | Louvred or polycarbonate | Keeps the space practical, but watch indoor light |
| Hot south-facing garden | Electric louvred | Best control over heat and glare |
| Shaded north-facing garden | Open or clear roof | Avoid making the space darker |
| Hot tub area | Roof plus side panels | Privacy, shelter and comfort |
| Budget summer seating | Polyester fabric | Good shade without premium spend |
| Low-maintenance modern garden | Metal pergola with louvred or polycarbonate roof | Clean look, practical shelter |
Best roof for a small patio
For a small patio, avoid making the pergola too heavy. A [3m x 3m Metal Pergola] with a fabric roof can be enough for shade. If you want proper rain cover, polycarbonate may work better. If budget allows, louvres give the most control.
Try not to overbuild a small space. A fully enclosed roofed pergola with panels on every side can feel cramped.
Best roof for a dining area
Dining areas benefit from more reliable cover. Polycarbonate and louvred roofs are the strongest options here.
For four seats, a 3m x 3m pergola may be fine. For six seats, bigger table settings or more comfortable movement, look at [4m x 3m Metal Pergolas].
Measure with chairs pulled out, not tucked in. That one detail saves a lot of regret.
Best roof for a hot tub
Hot tub pergolas need shelter, privacy and airflow. A roof is useful, but side control matters too.
A louvred roof gives ventilation when open and cover when closed. Polycarbonate gives constant overhead shelter. Side panels help with privacy, but do not box the whole area in unless airflow and access are sorted.
Also leave room to remove the hot tub cover and reach service panels. Looks obvious on paper. Gets forgotten in real life.
Best roof for a north-facing garden
A north-facing patio may not need more shade. It may need shelter and definition.
Polycarbonate can work because it keeps daylight. Open roof can also work if the goal is structure rather than rain cover. Be careful with dark fabric or heavy roof designs near the house, because they can make the inside feel dimmer.
Best roof for an exposed garden
For exposed gardens, start with fixing and wind direction. Then choose the roof.
A sturdy louvred or polycarbonate roof can work well if installed properly. Side panels may help, but only if the structure is designed and fixed for that extra wind load.
If the garden is very exposed, fabric may not be the best first choice.
Quick buying checklist
Before choosing a roof, run through this.
| Check | Why it matters |
| Main use | Dining, lounging, hot tub and BBQ areas all need different cover |
| Patio exposure | Wind changes the best roof choice |
| Rain expectation | Shade roof and rain roof are not the same |
| Daylight | Covered roofs near the house can affect indoor light |
| Drainage | Rain needs somewhere sensible to go |
| Base | Roofed pergolas need secure fixing |
| Side panels | Great for comfort, but add wind load |
| Electrics | Louvres, lighting and heaters need safe outdoor installation |
| Cleaning | Clear roofs and fabric need more visible upkeep |
| Size | A roof feels different on 3m x 3m than 4m x 3m |
FAQs
Which metal pergola roof is best?
An electric louvred roof is best if you want the most control over shade, sun and rain. A polycarbonate roof is better if you want constant cover and daylight without paying for moving louvres.
A polyester fabric roof suits seasonal shade and lower budgets. The best choice depends on your patio, weather exposure and how often you use the space.
Are louvred pergolas worth it?
Louvred pergolas are worth it if the pergola will be used often and you want adjustable shade and rain control.
They do make less sense if you only need occasional summer shade. They cost more than simpler roof types and need a suitable base, a square frame and safe outdoor electrics for motorised systems.
Is a polycarbonate pergola roof good for rain?
Yes, polycarbonate is one of the better pergola roof options for regular rain cover. It lets daylight through while giving fixed overhead shelter. It still needs proper run-off, and wind-driven rain can come in from the sides. For exposed patios, side panels or better positioning may be needed too.
Are fabric pergola roofs waterproof?
Some fabric roofs can handle light rain, but they are usually better for shade than serious wet-weather use. Fabric can flap in wind, collect dirt and may need retracting or removing in bad weather depending on the design. If rain cover is the main priority, polycarbonate or louvred roofs are usually stronger choices.
Can you add side panels to a metal pergola roof?
Yes, side panels can be a good addition, especially for privacy, side wind and hot tub areas. The main thing is not to overdo it. One or two panels may solve the problem better than closing all sides. Side panels also add wind load, so the pergola must be fixed properly.
Which pergola roof is easiest to clean?
An open roof is usually easiest because there are fewer surfaces to clean. Polycarbonate needs occasional washing because dirt and leaves show. Fabric roofs need more care to prevent staining or mildew. Louvred roofs need cleaning around the blades and drainage channels, especially after autumn leaves and bad weather.
Final recommendation
If you want the most flexible metal pergola roof, choose an electric louvred pergola. It gives the best control over light, shade and rain, but it costs more and needs a properly planned installation.
If you want simple, constant rain cover while keeping the patio bright, choose a pergola with a polycarbonate roof. It is practical, especially for dining areas and patios near the house.
If you mainly want softer summer shade without spending as much, a polyester fabric roof can be a sensible choice, provided the garden is not too exposed.
If you just want the patio to feel more finished, with lights, plants and a clean frame, an open roof metal pergola may be enough.
The right choice is not always the most expensive one. It is the roof that fits your garden, your weather, your budget and the way you actually sit outside.
