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Shutters vs roller shutters vs solid shutters: which shading system to choose
Louvred shutters, roller shutters or solid shutters? A comparison of shading, security, insulation, footprint, appearance and indicative cost to help you choose the right system.
- Mirko Vanzo
- Author
- 21 February 2026
- Published
- 15 min
- Reading time
When windows and doors are replaced, the shading system is often decided at the last minute, almost out of inertia: “let’s just put back what was there.” That’s a mistake, because louvred shutters, roller shutters and solid shutters are not three versions of the same object. They are three different systems that shade the room in different ways, take up different amounts of space, cost differently and change the appearance of the façade. The right choice depends on the type of home, on any constraints (including aesthetic and sometimes heritage restrictions), on budget and on taste.
This post is a decision-making comparison between the three systems. We won’t go into how they’re motorised — for that there’s the dedicated post on motorised shutters, roller shutters and home automation — nor into the detail of the slat material for roller shutters, which you’ll find in the comparison PVC or aluminium roller shutters. Here we focus on which of the three systems makes sense for your situation.
The three systems, in brief
Before comparing them, it’s worth pinning down exactly what they are, because the names get mixed up in everyday speech.
Louvred shutters (hinged): sashes that open outwards, fixed to the wall or frame with hinges, made up of a frame with slats (horizontal, either fixed or adjustable). They open and close like window casements. They are the classic “Mediterranean” system, extremely common throughout Italy. Sliding and folding variants also exist, but the reference here is the hinged louvred shutter.
Roller shutters: a curtain of connected horizontal slats that runs vertically inside two side guides and rolls up into a box above the window. They’re operated by strap, crank handle or motor. They are the most common system in Italian residential construction over the last forty years.
Solid shutters (or internal shutters): solid panels without slats, in timber, aluminium or PVC. True solid shutters are external and hinged, similar to louvred shutters but with a solid panel; internal shutters (“shutter leaves”) open into the room and fold back against the reveal. They shade by “solid seal”, not by filtering light the way slats do.
The most immediate practical difference is the type of shading:
- Louvred shutters filter light and air: closed with fixed slats they let a thread of light through and allow air to circulate; with adjustable slats you control how much.
- Roller shutters, when closed, create near-total darkness and block airflow; lowered halfway they let light and air in from the bottom.
- Solid shutters, when closed, create complete darkness and block airflow, like a door.
Comparison table at a glance
| Criterion | Louvred shutters (hinged) | Roller shutters | Solid / internal shutters |
|---|---|---|---|
| Shading | partial, adjustable (slats) | total (solid curtain) | total (solid panel) |
| Ventilation with shading closed | yes (slats) | no | no |
| Footprint | external, needs space to open | none externally, box internal/external | external (solid) or internal (internal shutters) |
| Box required | no | yes | no |
| Summer solar shading | excellent (with slats open) | good, but also blocks air | good, but also blocks air |
| Basic security | medium | low to high (security models) | medium |
| Maintenance (comparison criterion) | more moving parts exposed | enclosed mechanism but box is critical | few parts, heavy sashes |
| Aesthetic result | traditional, “warm” | discreet/modern | traditional, essential |
| Indicative cost* | medium-high | low-medium | medium |
*Figures are illustrative, order-of-magnitude, Italian market 2026; they depend heavily on material, dimensions, finish and installation. Specific figures are given in the pricing section further below.
Shading and light management
This is the first criterion, because it determines how you live in the room.
Louvred shutters are the only system that separates light from air. With adjustable slats you can keep the room in half-light while maintaining airflow, shade the afternoon summer sun without closing completely, or let the night breeze in with the house “closed”. This flexibility is why they remain the standard in warm regions. The limitation: even closed, louvred shutters with fixed slats let a little light filter through — for anyone wanting total darkness in a bedroom (shift workers, children’s rooms) this may not be enough.
Roller shutters are the best system for total darkness: with the curtain lowered, the room is dark even at midday. This is a real advantage for bedrooms and home cinemas. The mirror-image drawback: to ventilate with the house “closed” you have to leave them halfway down, and at that point light comes in too. They don’t separate light and air the way louvred shutters do.
Solid shutters are solid panels: closed, they create total darkness just like roller shutters, but being hinged they have no fine adjustment. They are “all or nothing”. Internal shutters, in particular, are valued for darkening bedrooms and for the clean appearance of the façade (they’re invisible from outside).
Thermal insulation and summer comfort
Honesty is needed here, because the contribution of the shading system tends to be overrated.
In winter, a shading system closed at night adds an air gap in front of the window and reduces heat loss. The effect is real but modest and similar across all three systems: as an order of magnitude, we’re talking about an improvement in night-time thermal resistance worth a few percentage points on the window’s heat loss, not a change of category. Most of the insulation is provided by the window itself (glazing and frame), not by the shading system, as we explain in the complete guide to PVC windows and doors.
The real difference comes from the roller shutter box, not the roller shutter itself. An uninsulated box is a thermal bridge that bypasses the window’s performance: in practice, a roller shutter can worsen the thermal balance if the box is an uninsulated open casing. Louvred shutters and solid shutters have no box, so they don’t introduce this problem. It’s a point in their favour that’s often overlooked.
In summer, solar shading matters: stopping the sun before it hits the glass. Here, louvred shutters with adjustable slats are unbeatable, because they shade while letting air through. Roller shutters and solid shutters shade the sun just as well, but they also close off the air: in summer, “I close it to stay cool but I’m stifled” is a real trade-off.
Security
No standard shading system is a burglary-resistant system, and it’s right to say so clearly. Genuine security comes from the combination of window, laminated glass and certified hardware, a topic covered in the complete guide to PVC windows and doors.
That said, there are practical differences:
- Roller shutters have the widest range: a thin PVC roller shutter can be forced in seconds, but there are security roller shutters in insulated aluminium with steel slats and an anti-lift lock, up to certified levels. It’s the only one of the three systems that reaches genuine integrated burglary resistance.
- Louvred shutters offer a medium physical and psychological barrier: a robust shutter with good hardware and internal locking is a deterrent, but the slats remain a weak point.
- Solid shutters, well anchored and with internal locking, offer protection comparable to louvred shutters.
If security is a priority, the most solid option is a security roller shutter, to be assessed on material together with the post on PVC and aluminium roller shutters.
Footprint, architectural context and appearance
This is the criterion that often decides the matter, especially in renovations.
Louvred shutters need external space to open: a clear reveal is needed for the sash to fold back against, and in towns facing the street they can interfere with pavements or projecting sills. Aesthetically they are the “traditional Italian” reference: in historic centres and prestigious contexts they are often the only accepted solution. In many restricted areas, local planning regulations or heritage constraints specifically require louvred shutters (or solid shutters) and prohibit visible roller shutters — always check local restrictions before choosing.
Roller shutters have zero external footprint: no sash projecting outwards, ideal where there’s no space to open (narrow balconies, windows onto the street). The price to pay is the box: either it’s internal (stealing a few centimetres of height, as well as being the critical thermal point) or it’s external and visible, which is aesthetically less appealing. The look is more “modern/neutral” and in some historic contexts it isn’t permitted.
Hinged solid shutters have the same footprint as louvred shutters; internal shutters, on the other hand, are invisible from outside (clean façade) and fold back into the thickness of the wall — an elegant solution where you want to preserve the external appearance while achieving total darkness, typical of certain prestigious architecture and many villas.
In summary, the aesthetic choice is linked to the type of home:
| Type of dwelling | Most common trend |
|---|---|
| Historic centre / listed building | louvred or solid shutters (often mandated) |
| Villa or modern detached house | louvred shutters or roller shutters, by taste |
| Flat in a 1970s-2000s block | roller shutters (already fitted for) |
| Country house / farmhouse | solid or timber louvred shutters |
| Narrow street-facing window with no space | roller shutters (no external footprint) |
Maintenance as a comparison criterion
Without going into operating instructions, maintenance weighs differently on the three systems and should be factored into the choice.
- Louvred shutters have more moving parts exposed to the elements (hinges, espagnolette bolts, and any adjustable slat mechanism). In timber they require more upkeep over time; in aluminium or PVC, much less.
- Roller shutters have a relatively enclosed mechanism, but the weak point is the box and the winding system (straps that wear out, motors with a finite service life). A fault inside the box is less convenient to deal with than a hinge.
- Solid shutters have few moving parts (just the hinges and the catch), but the solid sashes are heavy and put considerable strain on the fixing points.
Material matters more than system: PVC and aluminium require less attention than timber, regardless of whether it’s louvred shutters, solid shutters or roller shutters. It’s a topic we go into in more depth in the section dedicated to louvred shutters.
Indicative cost
The prices below are illustrative and order-of-magnitude, referring to the Italian market in 2026, for supply and fitting of a shading system on a standard window (approximately 120×140 cm), carried out by third-party installers: these are not LMT rates, as LMT supplies the product only. They vary considerably with material, finish, motorisation, site accessibility and region. They are intended only to compare systems against one another, not as a quote.
| System | Material | Indicative cost per window* |
|---|---|---|
| Roller shutter | standard PVC, manual | €120-210 |
| Roller shutter | insulated aluminium, manual | €250-360 |
| Security roller shutter | reinforced aluminium | €350-520 |
| Louvred shutter | aluminium, hinged | €300-550 |
| Louvred shutter | timber, hinged | €350-700 |
| Solid shutter | aluminium/PVC, hinged | €300-550 |
| Internal shutter | timber, internal | €250-500 |
*Indicative figures, order of magnitude, fitting included (third-party installer market reference, not an LMT quote), VAT excluded from the comparison; motorisation and box excluded. Specific figures noticeably lower than the range indicated often signal non-certified components or undeclared labour.
It’s worth adding that roller shutters, when the box already exists, are the most economical system to replace; when the box needs to be rebuilt or insulated, the cost advantage narrows. Louvred shutters and solid shutters have no box, so their price is more “all-in” but without hidden surprises in the recess above the window.
Can they be combined?
Yes, and it’s a more common solution than you might think. In some configurations, external louvred shutters coexist with an internal roller shutter or internal shutter (for total darkness in the bedroom) — the louvred shutters providing appearance, solar shading and ventilation. This is typical of villas or high-end renovations where both a traditional external appearance and total darkness in the bedroom are wanted. The cost obviously adds up, so it only makes sense where both functions are genuinely needed.
When it’s NOT the right choice
Every system has situations where it’s the wrong choice.
When a roller shutter is NOT the right choice:
- In a listed building where regulations require visible louvred or solid shutters: a roller shutter wouldn’t even be authorised.
- If the box is small, deteriorated or cannot be insulated and you don’t want to intervene: you risk introducing or maintaining a thermal bridge that undermines the new window.
- In a bedroom where night-time ventilation is needed with the house closed and partial darkness: a roller shutter doesn’t separate light and air.
When louvred shutters are NOT the right choice:
- On windows with no external space for the sashes to fold back against (narrow balconies, windows flush with the street).
- Where total darkness is needed and you want to avoid the light filtering through the slats.
- If you’re seeking maximum security integrated into the shading system: there, a security roller shutter is more suitable.
When solid shutters are NOT the right choice:
- Where summer sun needs shading while keeping some air and light: a solid shutter is all-or-nothing.
- If the desired look is modern/minimal and traditional solid shutters clash with the context.
- Where heavy sashes would be inconvenient to operate daily (very large windows without motorisation).
FAQ
Which system darkens the room the most?
For total darkness, roller shutters and solid shutters are the best: closed, they create near-complete darkness at any time of day. Louvred shutters, even closed, let a thread of light filter through the slats. For a bedroom where full darkness is needed, a roller shutter or internal shutter is the most suitable choice.
Do louvred shutters insulate less than roller shutters?
The thermal contribution of the shading system is modest and similar across all three systems: the window itself does most of the work. The practical difference is the box: roller shutters need one, and if it isn’t insulated it can worsen the overall thermal balance. Louvred shutters and solid shutters have no box and therefore don’t introduce this weak point. As an illustrative figure, we’re talking about differences of a few percentage points, not a change of category.
Can I switch from roller shutters to louvred shutters during a renovation?
Technically, often yes, but you need to assess the existing box recess (which would be left unused or would need closing off) and, above all, local planning and heritage restrictions, which can mandate or prohibit a given system. It’s a choice that affects the appearance of the façade, so it’s worth checking your local council’s regulations first.
Are solid or internal shutters suitable for flats?
Internal shutters, yes, and they’re valued precisely because they don’t alter the building’s external appearance (useful in blocks with uniform façades) and guarantee total darkness. External hinged solid shutters are more typical of detached houses and villas, where there’s space and a suitable architectural context.
Which system costs the least?
As an order of magnitude, replacing a roller shutter and reusing the existing box is usually the cheapest option. When the box needs to be rebuilt or insulated, or when timber louvred or solid shutters are chosen, the costs converge. All figures should be taken as indicative and verified case by case.
Which system is most secure against break-ins?
No standard shading system is truly burglary-resistant: security comes from the combination of window, laminated glass and hardware. Among the three systems, however, only roller shutters have certified security versions (reinforced aluminium, steel slats, anti-lift lock) that reach genuine burglary-resistant function. Robust louvred and solid shutters remain a medium deterrent.
Choosing the shading system isn’t a last-minute detail: it affects everyday comfort, the appearance of the home and, via the box, even the performance of the new window. The right system depends on the type of dwelling, any constraints, budget and taste — and often the best answer emerges by looking at each window individually, not with a single rule for the whole house. If you’d like a comparison of windows and doors and their shading systems for your specific case, request a quote and we’ll assess the shading system, box and window together as a single package.