Residential patios
Open the roof for sun in winter and close it for shade and rain cover in summer.
Outdoor living structures
Aluminium Pergola with Retractable Louvered Roof
A retractable louvered roof pergola has aluminium blades that rotate like a standard louvered roof and can also slide back and stack at one end, leaving the roof completely open to the sky. It gives the widest range of control: full sun, filtered shade, ventilation or a closed, rain-shedding roof. Metline supplies profiles and blade sections for retractable and rotating louvered pergolas to pergola makers for homes, hospitality and commercial projects worldwide.
- Frame alloy
- 6063-T5 / T6
- Roof action
- Rotate and retract
- Drive
- Motorised (manual on rotating types)
- Drainage
- Concealed via beams and posts
How a retractable louvered roof works
In a rotating louvered roof, each blade pivots in place: the roof can be opened to about 90° or more, but the blades always remain overhead. In a retractable louvered roof the blades are carried on trolleys in the side beams. A motor first rotates them, then draws them along the beams so they stack tightly at one end. The result is an open frame with nearly the whole area exposed to sky.
When closed, the blades lie flat and interlock, with a gutter edge on each blade that carries rain sideways into the perimeter beams and down inside the posts. Because the mechanism is more complex than a simple rotating roof, retractable systems are almost always motorised and are usually paired with rain and wind sensors that close or open the roof automatically.
Retractable and adjustable roof options compared
| Roof type | How it opens | Rain cover | Best for |
|---|---|---|---|
| Rotating louvered roof | Blades pivot 0 – 90° or more in place | Yes, when closed | Most residential and hospitality terraces |
| Rotating and retractable louvered roof | Blades rotate, then slide and stack at one end | Yes, when closed | Open-sky use, restaurants, premium homes |
| Sliding solid roof | Rigid panels slide over each other | Yes, when closed | Semi-covered lounges and terraces |
| Retractable fabric canopy | Fabric folds or rolls back on guides | Limited; light rain only with waterproof fabric | Light-duty and seasonal shade |
A hardtop louvered roof gazebo is a freestanding alternative with a fixed decorative roof, and an aluminium sunshade system suits façades where only solar control is needed.
Typical specifications
| Item | Standard system (indicative) | Heavy-duty system (indicative) |
|---|---|---|
| Frame alloy | 6063-T5 / T6, powder coated | 6063-T6, thicker walls or reinforced |
| Posts | About 120 × 120 mm, wall around 1.5 – 2 mm | About 150 × 150 mm, wall 2 mm or more |
| Beams | About 150 mm deep | About 180 – 220 mm deep |
| Blades | About 160 mm wide, double-skin flat | About 180 – 220 mm wide, flat or angled |
| Blade rotation | Up to about 90° | Up to about 135 – 150° on some systems |
| Retraction | Not on most standard rotating units | Available on retractable versions |
| Drainage | Blade gutters to beams, out through posts | Larger gutters for longer spans |
Dimensions are typical of the market and vary by system. Request engineering data for wind, snow and span limits for your chosen configuration and site.
Design and installation points
- Module layout: blade length and beam span set the module size; larger areas use joined modules, with the stacking end and post positions planned together.
- Wind: design to the site wind speed under ASCE 7 or EN 1991-1-4; a wind sensor should open the blades or stop retraction in storms.
- Snow: follow the published snow rating; if the roof is not rated to carry snow closed, retract or open it before snowfall.
- Power and controls: run mains supply to a post before the slab is poured; motors and controls should be outdoor-rated and carry the marking required locally.
- Foundations: anchor posts to a reinforced slab or footings sized for uplift and overturning.
- Side systems: zip screens, glass and slat walls add wind load; check the frame and retract screens in high wind.
- Maintenance: keep tracks, gutters and post outlets clean, and check the drive and trolleys annually.
Applications
Hotel courtyards and pools
Weather-proof outdoor dining and lounge areas that can open to the stars at night.
Restaurants and cafés
Keeps outdoor covers in use in changing weather, with lighting and heaters built in.
Commercial courtyards
Joined modules over large spaces, operated centrally with sensors.
References and standards
- ASTM B221 – Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes
- EN 1991-1-4 – Actions on structures: wind actions
- ASCE/SEI 7 – Minimum Design Loads and Associated Criteria for Buildings and Other Structures
- EN 13561 – External blinds and awnings: performance requirements including safety
Retractable louvered roof pergolas: FAQ
What is the difference between a louvered and a retractable louvered pergola?
A louvered pergola's blades only rotate, so they stay overhead even when fully open. A retractable louvered roof rotates the blades and then slides them back to stack at one end, opening almost the whole roof to the sky.
Is a retractable louvered roof waterproof?
When closed, the interlocking blades shed rain into gutters in the beams and down through the posts, keeping the area dry in normal rain. Wind-driven rain can still enter from the sides unless screens or glass are fitted.
Can the roof be operated manually?
Rotating-only roofs are often available with a manual crank. Retractable roofs are almost always motorised, because sliding and stacking the blades needs a powered drive, usually with remote control and optional rain and wind sensors.
What happens in snow or strong wind?
Follow the system's published ratings. Many owners retract or open the roof before heavy snow, and a wind sensor can open the blades or stop the roof moving in storms to reduce load on the structure.
What maintenance does a retractable roof need?
Clean blades, tracks and gutters regularly, keep post outlets clear, and have the drive, trolleys and seals checked once a year. Rinse more often in coastal areas.
Want a roof that opens to the sky?
Send the size, mounting, options, colour and destination to sales@metline.in for a quote on retractable pergola profiles.
