Most new homes in Werribee, Tarneit, Truganina and Point Cook hand over with a concrete alfresco slab and nothing over it. In summer that slab sits in full sun, and in winter it is too wet and cold to use. A steel patio roof fixes both, turning the slab into a room the family actually lives in. Peak Pergolas designs and builds Colorbond steel patios across Wyndham: attached to the house, freestanding in the yard or raised as a fly-over above the existing gutter. Each patio is engineered for the site, the roof sheeting is chosen for how hot or bright the space needs to be, and the building permit is arranged as part of the job. Call Peak Pergolas for a free measure and a written quote.
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Outdoor patios in Werribee are built in a handful of standard layouts, and the layout follows where the outdoor space is and how the house roof is built. In Australia a patio usually means a steel-framed roof over an outdoor living area, open on the sides, and the steel frame is what lets it span wide with only a few posts.
An attached patio is fixed to the house along one side and supported by posts on the other. It is the most common choice over an alfresco slab because it extends the living area straight out from the back door, and the house carries one side of the roof.
A freestanding patio stands on its own posts away from the house, over a pool area, a firepit or an outdoor kitchen at the back of the block. It suits homes where the eave is too low to attach to, or where the best spot for shade is not against the house. Larger freestanding builds have their own page on free standing pergolas.
A fly-over patio is lifted above the existing gutter on brackets fixed to the roof frame, so the new roof sits higher than the eave. On single-storey homes with low eaves this gives far more headroom and lets more light and air into the house.
A patio awning is a smaller, single-slope roof for a spot that does not need a full patio: over a back door landing, a side path or a west-facing window that takes the afternoon sun. It is fixed to the wall or fascia on brackets, roofed in Colorbond or polycarbonate sheet and usually needs only one or two posts, or none on a short cantilevered awning. Owners choose an awning when the goal is shade and weather protection for a doorway or window rather than a space to sit in.
Many patios go over a slab or paving that is already there. The posts can land beside the slab on new footings, or the slab can be core-drilled or cut so a footing goes through it. Either way, the existing surface stays and only the post positions are disturbed.
The roof shape changes the feel of the patio. A flat roof keeps a low, simple line under the eave, a skillion roof rises at a single steeper pitch for height and light, and a gable roof peaks in the middle for the most open, airy space.


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A patio in Wyndham has to cope with long, bright summers and a steady wind across the plains. The Bureau of Meteorology's long-term averages for Laverton RAAF show a mean January maximum of 25.8 degrees and about 8.5 hours of sunshine a day in January, which is exactly when an uncovered alfresco becomes unusable. The engineering makes sure the roof that blocks that sun stays put in the wind.
Posts and beams are galvanised steel, usually square or rectangular hollow section, sized by the span and the roof load. Galvanising protects the steel from rust where posts meet the ground and where water runs off the roof. A steel beam can span further than timber of the same depth, so the patio needs fewer posts in the way of the table and the view.
A Colorbond patio roof uses single-skin pre-painted steel sheeting in a profile and colour chosen to suit the house. It is light, strong and the most economical roof. Insulated patio roof panels sandwich a foam core between two steel skins, which keeps the space underneath noticeably cooler and quieter in rain. Polycarbonate roofing lets daylight through where the patio would otherwise darken a living room.
How the patio joins the house depends on the house. On a strong fascia the patio beam fixes to the fascia board with brackets. Where the fascia cannot take the load, a beam is fixed to the wall below the eave. On a fly-over, brackets are fixed into the roof rafters or trusses so the load goes into the frame of the house, not into the gutter.
Every post sits on its own concrete footing, sized for the soil and the uplift. Much of Wyndham sits on reactive basaltic clay, so footings go deep enough to reach stable ground. A post simply bolted to the top of an alfresco slab is not a footing, because a slab is not designed to hold a roof down in a strong gust.
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Choosing patio builders comes down to who measures properly, who engineers for the site and who looks after the permit. Peak Pergolas specialises in outdoor structures across Werribee, Point Cook, Tarneit, Truganina, Hoppers Crossing, Wyndham Vale and Manor Lakes.
Working across one council area means the builder knows the common house types, the estate design guidelines that can set colours and setbacks in newer suburbs, and the soil conditions on the plains. That local knowledge shortens the design stage and avoids surprises at the footing stage.
At the measure the builder checks the condition and height of the fascia, the roof pitch and gutter line, where stormwater can drain, and whether services such as gas or water run under the slab where a post needs to go. Those checks decide whether the patio attaches, flies over or stands free, before a price is put on paper.
Once a structure has a roof, Victorian building rules treat it differently from an open pergola, and a roofed patio generally needs a building permit. The drawings, engineering and permit application are prepared as part of the job, so the owner does not need to find a building surveyor separately. The pergola permits guide explains the rules in plain language.


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Patio prices vary more than most owners expect, because the same floor area can be roofed in very different ways. A free measure leads to a written, itemised quote, so each choice can be weighed against its cost.
The floor area sets the base price, because it decides how much roof sheeting is needed and how long the beams must span. A small patio of around 20 square metres over a back door costs far less than a wide patio running the length of the house, but the cost does not rise in a straight line: longer spans may need heavier beams or an extra post, and the fixing method and footings are needed whatever the size.
Single-skin Colorbond sheeting is the most economical roof. Polycarbonate sits close to it, depending on the grade. Insulated roof panels cost the most per square metre but bring the greatest comfort in summer. A fly-over or gable design adds framing and labour compared with a flat attached patio, and removing an old structure or cutting a slab for footings is quoted separately.
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Owners comparing patios usually weigh up three options: a built steel patio, a pergola, or a patio kit from a hardware store. Each suits a different budget and a different use of the space.
A patio has a solid roof that blocks sun and rain, so it works as an outdoor room all year. A pergola traditionally has open rafters or battens that filter sunlight, which suits a garden setting or a climbing plant. Many homes use both: a roofed patio over the alfresco and an open timber pergola over a garden path or deck.
A patio kit supplies a frame and roof sheeting in fixed sizes. It does not include the footings for the site's soil, the engineering for the block's wind exposure, the building permit, or the labour to fix it safely to the house. Those items are often where the real cost and risk sit.
On a level site with good access, an owner with building skills can save on labour by installing a kit, and that is usually the cheapest way to cover a patio. It still needs a permit and correct footings. Where the house fascia is weak, the eave is low or the soil is reactive, a built patio is the safer choice.


The builder visits, measures the house and the site, talks through materials, roofs and colours, and follows up with a written, itemised quote.

Drawings and engineering are prepared for the site, estate guidelines are checked and the building permit is arranged where one is needed.

Footings, frame and roof are built and inspected at each stage, the site is cleaned up and the finished structure is handed over.
The price depends on the size, the roof sheeting, the design and how the patio fixes to the house. Single-skin Colorbond is the most economical roof and insulated panels cost the most. A fly-over or gable patio costs more than a flat attached patio. A written, itemised quote follows the free measure.
A patio with a solid roof is generally treated like a verandah under Victorian building rules, so it needs a building permit. Only a small open pergola within the height, size and siting limits is exempt. The permit is arranged as part of every Peak Pergolas patio build.
Yes. The posts either sit on new footings just outside the slab or go through it where the slab is core-drilled or cut. The rest of the slab stays in place. Posts should never be bolted only to the slab surface, because the slab is not designed to hold a roof down in the wind.
A fly-over patio is raised above the existing gutter on brackets fixed into the roof frame. It gives more headroom than a patio fixed under the eave and lets more light into the house. It suits single-storey homes with low eaves.
Single-skin steel sheeting absorbs the sun and radiates heat down onto the space below, especially in dark colours. Lighter roof colours help, and insulated roof panels with a foam core cut the heat far more. Raising the roof with a fly-over or gable design also lets hot air escape.
Colorbond single-skin sheeting is the best value and suits most patios. Insulated panels suit patios used heavily in summer or next to living rooms. Polycarbonate suits patios that would otherwise darken the house. Peak Pergolas shows each option at the free measure.
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