A skillion roof pergola has a single roof plane that slopes one way, steeper than a flat roof and simpler than a gable. That one clean line suits modern homes, and because the roof can rise towards the garden rather than the house, it can lift the outer edge high to let light and winter sun into the rooms behind. Peak Pergolas designs and builds skillion roof pergolas and patios across Sunshine, Cairnlea, Derrimut, Deer Park, Taylors Lakes and the rest of Brimbank. Each skillion is pitched to suit the house, drained to one well-sized gutter, framed and tied down for the open-plain wind and roofed in Colorbond, clear sheet or insulated panels.
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Skillion roof pergolas in Sunshine can be fixed to the house, raised to open up the view, or built as stand-alone structures. The form depends on the height available at the house and where the light needs to go.
An attached skillion patio is fixed to the house wall or fascia and slopes down and away to a gutter on the outer beam. It is a straightforward, economical design that suits a back alfresco on a single-storey home, and its steeper pitch sheds rain faster than a flat roof.
A raised or reverse skillion is fixed low at the house and rises towards the garden, so the outer edge is the high side. That opens the view of the sky from inside, lets winter sun reach the back rooms and gives the patio a modern, airy feel. The gutter then runs along the house side, so it is detailed carefully to carry water away from the wall.
A free standing skillion stands on its own posts over a deck, an outdoor kitchen or a garden seating area. Its single slope gives a strong modern shape and suits a spot beside a fence or wall, where the low side can face the neighbour and the high side face the garden.
A skillion is the natural roof for narrow spaces beside the house, such as a side path to the bins, a courtyard off a bedroom or a covered walkway from the back door to the garage. A single slope can run along the side of the house and drain to one gutter on the boundary side, keeping water off the path and away from the neighbour. On a narrow side setback, the low edge sits along the fence and the high edge against the house, so the roof does not crowd the boundary and still gives full headroom at the door.


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A skillion looks simple, but its pitch, its gutter and its fixings decide whether it drains well and stays put.
A skillion usually has a noticeably steeper pitch than a flat patio roof, which gives it its look and helps it shed water and leaves. The direction of fall is the key decision: falling away from the house keeps the house side high and simple, while rising away from the house opens the view. The pitch is also checked against the 3.6 metre height limit and setbacks that the building permit assesses.
Because all the water runs to one side, a skillion has a single gutter that collects the whole roof. Melbourne Airport averages about 537 mm of rain a year over roughly 86 days, so the gutter and downpipes are sized to the roof area and connected to stormwater rather than spilling onto paving or the house slab.
The Bureau of Meteorology's long-term record at Melbourne Airport shows a mean 3pm wind speed of 22.0 km/h across the year, rising to 24.4 km/h in September. A skillion's high edge catches the wind, so rafters are fixed to beams with framing brackets, beams are bolted to posts and posts are fixed to footings sized to the soil test on Brimbank's reactive basalt clay, with holes cored where rock sits near the surface.
Colorbond steel sheet is the standard skillion roof and comes in colours that match the house. Clear polycarbonate keeps light reaching the house, and insulated panels make the space cooler and quieter with a flat ceiling underneath. See polycarbonate pergolas and insulated patios for those options.
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Skillion patio builders need to plan the fixing point, the fall and the gutter around the house, because a skillion shows every misjudged angle. Peak Pergolas measures, designs and builds each skillion with a written, itemised quote, and two things set the work apart.
On a two-storey home, a skillion can be fixed to the wall below the upper-floor windows, so it covers the ground-floor alfresco without blocking the view from upstairs. The fixing height, flashing and pitch are worked out from a measure of the wall and the window heads, and the ledger is bolted into the frame and flashed to keep water out of the wall.
A roofed skillion attached to the house is treated as a verandah in Victoria and needs a building permit. The drawings, engineering and permit application are prepared as part of the job, and lighting or fan cabling is run inside the frame by a licensed electrician during the build. See pergola permits for when a permit applies.


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A skillion roof pergola is priced from a free measure and a written, itemised quote. As a guide, a skillion costs a little more than a flat roof of the same size because of its taller posts on the high side, and less than a gable, which needs a ridge and more roofing.
The floor area sets the amount of roofing and the size of the beams. A steeper pitch means taller posts on the high side and a slightly larger roof area. A raised skillion with a tall outer edge needs heavier posts and bracing for the wind it catches.
Downlights, LED strips, a ceiling fan and screens on the windy or overlooked side are each quoted as their own line. Insulated panels cost more than plain Colorbond sheet, and removing an old structure is priced separately, so the owner can see exactly what each choice adds.
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The roof shape sets the look of the pergola and how it sits with the house. A skillion is often the right middle ground between a flat roof and a gable.
A flat roof is the most economical and suits homes with low eaves where height is limited. A skillion has a steeper, more visible slope that gives a deliberate modern look, sheds water faster and can be raised to let light in. Where there is enough height at the house, a skillion usually looks more designed than a flat roof.
A gable roof rises to a central ridge and suits homes with a pitched tiled roof and large entertaining areas that need height. A skillion is simpler and more economical, has one gutter rather than two, and suits modern homes with flat or skillion roof lines. See gable roof pergolas for pitched designs.


A visit to measure the house and the yard, talk through materials, roofs and colours, then a written, itemised quote.

Drawings and engineering are prepared for the site and the building permit is arranged wherever 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 cost depends on the floor area, the pitch, the roofing and the extras. A skillion generally costs a little more than a flat roof of the same size and less than a gable. Insulated panels, a raised design and difficult access add to the price. A free measure gives a written, itemised quote.
A skillion roof is a single roof plane that slopes in one direction, at a steeper pitch than a flat patio roof. It has one high side, one low side and one gutter, and its clean line suits modern homes.
Sloping away from the house is simpler and keeps the gutter on the outer edge. Rising away from the house opens the view and lets winter sun into the back rooms, but puts the gutter along the house side, so it needs careful flashing and drainage.
A roofed skillion attached to the house is treated as a verandah in Victoria and needs a building permit. The permit checks the structure, the height and the setbacks. The drawings and application are prepared as part of the job.
Yes. A skillion can be fixed to the wall below the upstairs windows, with the ledger bolted into the house frame and flashed to keep water out. The fixing height and pitch are set from a measure of the wall and the window heads.
Yes. Its steeper pitch sheds water and leaves faster than a flat roof, and all the water runs to one gutter sized for the roof area. Peak Pergolas connects the downpipes to stormwater so water does not pool against the house.
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