Wall-mounted or free-standing pergola: how to choose and install

A wall-mounted pergola, also called a lean-to or attached pergola, is fixed along one side to the wall of the house and carried at the front by two or more posts. A free-standing pergola, also called an island pergola, stands on its own four or six posts and goes wherever shade is needed: by the pool, in the garden, over the parking space, in a restaurant courtyard. Both come as bioclimatic pergolas with adjustable aluminium louvres (a louvered roof, in American usage) and as retractable-fabric pergolas; Michelessi, in Aprilia between Rome and Latina, sells and installs both versions by Gibus, KE Outdoor Design and Pratic. How the louvres, sensors and drainage work is explained on the page bioclimatic pergola: what it is and how it works.

A wall-mounted pergola is the right choice when the space to cover borders the house: the penthouse terrace, the porch, the French window of the kitchen. With the wall as the fourth side you need fewer posts, the passage between inside and outside stays clear and the shade also falls on the glazing, which heats up less in summer. In the configurations declared by Gibus for its bioclimatic pergolas it is called «Addossata frontale 2 gambe» (front-mounted, two legs), «Addossata frontale 4 gambe» or «Addossata laterale 3 gambe»; KE Outdoor Design marks it with the letter A (Kedry Plus A, Keplan A, Isola 2 A); Pratic declares its bioclimatic pergolas «free-standing or wall-mounted».

The wall and the slab

Before ordering we check three things during the survey: what the wall is made of (brick, stone, a load-bearing frame, or external insulation that needs through-fixings), how much load the terrace slab can take where the posts stand, and where the existing drains are, because the water from the closed louvres runs down inside the posts and must end in a gully, not on the neighbour's floor below.

A wall-mounted pergola on a condominium terrace

On a privately owned terrace the attached pergola is almost always anchored to the façade, which is a common part of the building: the Italian Civil Code requires prior notice to the building administrator and forbids works that harm the stability, safety or architectural decorum of the building, and the condominium rules may add colours or further authorisations. The guide pergola on a condominium terrace covers it in full; at the design stage we read the rules with you.

A free-standing pergola is the right choice when shade is needed where the house does not reach: the lawn with the big table, the poolside, the cooking corner at the bottom of the garden, a restaurant courtyard, the parking space. Four posts make it independent of any wall; joined modules cover long surfaces without changing the profile. Gibus calls it «Isola 4 gambe» and «Isola 6 gambe» (island, four or six legs); KE Outdoor Design declares for Isola 2 a free-standing module of up to 550 cm in width by 1,000 cm in projection and for Kedry Plus up to 400 by 810 cm; Pratic declares for Opera modules from 200 to 550 cm wide and from 180 to 700 cm deep.

By the pool and in the garden: paving, posts and water

In a garden the delicate point is the base: the posts need a flat, solid footing, the water running down them needs a gully, and the paving must be laid after deciding where the columns stand, not before. That is why we design the pergola together with the stone paving and the pool surround: the anchor plates stay under the stone, the drain joins the rainwater network and the posts avoid the pool steps. On sloping ground KE Outdoor Design declares height-adjustable columns for Keplan. On the coast we choose models with a declared wind resistance. For KE Outdoor Design models the UNI EN 13561 classes, declared by the manufacturer, are as follows (Kedry Skylife, Kedry Prime, Kedry Plus, Keplan, Isola 2, Gennius Vega and Xtesa: class 6 declared; Kedry Neos class 5; Hydra class 3). Gibus and Pratic declare Qualicoat Seaside pre-treatment for their coated aluminium, which helps against salt air, but their web pages do not publish a wind class for their pergolas: we check it in the catalogue of the chosen model.

A free-standing pergola over the car

A free-standing pergola also covers the parking space: with the louvres closed it shelters the car from rain and hail, open it lets the heat of the engine escape, and the gutter carries the water away from the bodywork. As a design example, a 3×5 metre module holds one car with room to open the doors. Two warnings: the sides must stay open, because closing them permanently would turn it into a garage, with a different building regime; and the floor beneath must carry the weight of the car, which we check when laying the stone driveway paving. Anyone who wants the cover to produce energy as well will find the bioclimatic pergola with integrated photovoltaic panels (Gibus offers it as Energy Pergola) on the page photovoltaic pergolas.

A pergola «without posts» can be had in three ways. The first is the roof-only pergola, the louvred or fabric cover alone, resting between two walls or on an existing structure: KE Outdoor Design marks it with the letter T (Kedry Plus T, Isola 2 T, Hydra T) and Pratic offers Brera B, a single post-free module with retractable louvres, declared up to 430×585 cm for light wells and existing structures. The second is the post-free outdoor cover, with a fabric roof sliding on rails between two walls: Pratic's Tecnic, One and Veranda. The third is the wall-mounted pergola with only two front legs, which keeps the footprint on the ground to a minimum: in the Gibus configurations it is the «Addossata frontale 2 gambe». Gibus also declares its fabric covers adaptable to existing pergolas.

Versions and module sizes as the manufacturers declare them; final sizes are set on the drawing.

The brand pages show the full ranges: Gibus pergolas, KE Outdoor Design pergolas, Pratic pergolas.

The most requested sizes, 3×4, 4×4 and 5×4 metres, are good starting points, not a price list: the pergola is drawn on the real space. With an outdoor kitchen along one side you usually need 5 or 6 metres of length, because the worktop, the barbecue and the passage behind the cook all want room. When the surface exceeds the manufacturer's maximum module, two or three modules are joined with a shared post, placed where it cuts neither the view from the glazing nor the path to the pool. The clear height under the louvres is set on the French window and, for wall-mounted pergolas, on any awning or shutter box already on the façade. What the quote for a pergola depends on, wall-mounted or free-standing, is covered in the guide how much does a bioclimatic pergola cost.

For Italian law the difference matters. A wall-mounted pergola with adjustable louvres or a retractable fabric falls in many cases under free building activity (edilizia libera: art. 6, letter b-ter, of the Consolidated Building Act); a free-standing pergola does so if it is «annexed», that is close to the house and serving it. An isolated structure at the bottom of the garden is assessed instead as a pergola «of limited size and not permanently fixed to the ground» under the Glossary of free building works (Ministerial Decree of 2 March 2018, item 46), or as a temporary work. The full conditions and the case law are in the guide permits for pergolas in Italy; to tell a pergola from the other covers see the guide bioclimatic pergola vs pergotenda, gazebo and veranda.

The municipal building regulations, landscape restrictions (on the coast, in the Castelli Romani, in historic centres), anti-seismic rules, the condominium rules and the distances always remain to be checked. The Civil Code requires three metres between buildings on adjoining plots (art. 873) and from neighbours' views (art. 907), and local regulations may require more: whether and how these rules apply to a pergola depends on the municipality and on the type of structure, so we do not give a single figure but verify it during the survey, looking at the boundary and at the neighbours' windows, which for a pergola in the garden are often the deciding point. A pergola permanently closed on all sides must be checked with the municipality. We tell you at the design stage, before ordering.

This is where the Michelessi pergola department makes the difference: the pergola is born in the same drawing as the stone outdoor kitchen, the paving and the pool, and the same team installs them. With a wall-mounted pergola the kitchen usually runs against the wall, with the refractory-stone barbecue under louvres that stay open above the hood and the granite, quartzite or sintered-stone worktop in front of the French window. With a free-standing pergola the kitchen becomes an island by the pool: two posts frame the worktop, the third and fourth the dining area, and the rainwater from the louvres runs down the post furthest from the fire. The levels of posts, worktop and paving are the same in a single 3D design, so no column lands in front of the sink. The kitchen stays outdoor furniture and, if the pergola is closed on all sides, we first ask the municipal technician for an opinion. The page outdoor kitchen under a pergola shows the solutions and explains the limits; the department's main page, bioclimatic pergolas, awnings and bespoke covers, lists every type, from retractable-fabric pergolas to enclosures with sliding glass walls and zip screens.

The path (survey, 3D design, installation by the Michelessi team) is the same as for our other pergolas and is described in bespoke pergolas: survey, design, installation. What changes is the survey: for a wall-mounted pergola we start from the wall, the slab and the existing drains; for a free-standing one, from the footing of every post, the gully for the water and the boundaries. Then the model is chosen among Gibus, KE Outdoor Design and Pratic according to location and local wind, and before the order we check permits, condominium rules and distances.

The survey and the quote are free of charge in Lazio: write or call Michelessi SRL, Via Pontina km 45.350, Aprilia (Latina); phone and WhatsApp +39 06 9275383, or fill in the quote form.

1. Look at where the shade is needed
   If the area to cover touches the house (terrace, porch, kitchen door) the answer is a wall-mounted pergola; if shade is needed by the pool, in the garden or over the parking space, a free-standing one.
2. Check the wall and the slab
   A wall-mounted pergola needs a wall that can take the fixing and a slab that can carry the posts; if they are missing, a free-standing pergola solves it without touching the façade.
3. Decide where the water goes
   The water from the closed louvres runs down the posts: on a wall-mounted pergola towards the terrace drains, on a free-standing one into a gully to be built into the paving.
4. Design pergola, kitchen and paving together
   The posts go where they do not get in the way of the worktop, the glazing and the pool steps: that is why at Michelessi they come from a single 3D design.
5. Check permits, condominium rules and distances before ordering
   Municipal regulations, landscape restrictions, condominium rules and boundary distances change the choice: we tell you at the design stage, before ordering.

• Pergolas: the main page
• Tax deductions for awnings and pergolas in Italy 2026: the rules
• Pergola Enclosures: Sliding Glass Walls and Zip Screens
• Outdoor kitchen under a pergola: stone and shade, one design
• Gibus vs KE vs Pratic: how to choose a bioclimatic pergola
• Bioclimatic pergola maintenance: wind, snow and winter
• Bioclimatic pergola: what it is, how it works, how to choose
• Bioclimatic pergola or pergotenda: differences, canopy, veranda
• Pergola on a condominium terrace in Italy: rules and neighbours
• Pergolas in Anzio and Nettuno: Bioclimatic Pergolas & Awnings
• Bioclimatic pergolas Aprilia, Pomezia, Ardea: sales and fitting
• Pergolas in the Castelli Romani: Bioclimatic, Awnings, Screens
• Photovoltaic pergolas: Gibus Energy Pergola and KE Sunlight
• Bioclimatic pergolas in Frosinone: snow loads and winter use
• Gibus Pergolas in Lazio: Models, Awnings and Installation
• KE Outdoor Design pergolas in Lazio: Kedry, Isola, Gennius Vega
• Bioclimatic Pergolas and Awnings in Latina and Cisterna
• Bioclimatic Pergolas on the Lazio Coast: Terracina to Gaeta
• Bioclimatic Pergolas for Restaurants, Hotels and Beach Clubs
• Pratic Pergolas in Lazio: Opera, Vision, Brera and Awnings
• Bioclimatic Pergolas in Rome: Installation and Stone Kitchens
• Bespoke pergolas: survey, 3D design and installation, Lazio
• Retractable fabric pergolas (pergotende) in Lazio, Italy
• Pergola Permits in Italy 2026: Edilizia Libera and Its Limits
• How much does a bioclimatic pergola cost: what drives the price
• Folding-arm, drop and cassette awnings in Aprilia and Lazio