Selecting Where to Mount Your Folding Arm Awning

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Installation guide · Part 1 of 2

Selecting where to mount your folding arm awning

A folding arm awning is heavy, and it hangs off a wall on a very long lever. Choose the wrong spot or the wrong fixings and it can tear off the wall — with people underneath. This guide is about getting that decision right before you drill a single hole.


pitch PROJECTION CLEAR- ANCE Wall bracket top bolts carry the pull-out Square bar (torsion tube) sits into the brackets Roller tube & cassette Arm shoulder all the load enters here Elbow joint Folding arm powerful internal spring Front bar + valance Fabric
The parts you'll be dealing with. Nearly every failure traces back to two of them: the wall bracket and the arm shoulder.
Who this is forConfident DIY installers
Applies toAll folding arm (retractable) awnings — open, semi-cassette and full cassette
Read withPart 2: the step-by-step install guide

1 · Take this seriously

A folding arm awning is the heaviest thing most people ever bolt to the outside of their house.

A 5 metre by 3 metre cassette awning weighs somewhere between 80 and 100 kilograms. That is a piano hanging above your outdoor table. But the weight on its own is not the problem — the problem is where that weight sits.

Everything on a folding arm awning hangs out in front of the wall. The cassette sits about 250 mm off the brickwork. The arms reach out 2.5, 3 or 4 metres. All of that has to be held by a bracket that is only about 200 mm tall. That difference in length is a lever, and it multiplies force enormously.

Load at the front bar weight + wind lift + trapped rain PULL-OUT on the top bolts this is what tears awnings off walls CRUSHING into the wall at the bottom of the bracket Lever back = 200 mm the bracket height Lever out = 3000 mm 3000 ÷ 200 = 15 Every 1 kg of load hanging at the front bar pulls roughly 15 kg on the top bolts.
The lever effect. The awning pushes out 3000 mm. The bracket only has 200 mm to push back with. Divide one by the other and you get a multiplier of about 15 — so a small load at the front bar becomes a very large pull on the top bolts.
80–100 kga 5 × 3 m cassette awning
≈15×force multiplier from projection to bracket — more on deep projections
≈3–4 kNuplift per bracket at the awning's rated wind — most of it on the top fastener

Three to four kilonewtons is roughly 300 to 400 kilograms of straight pull on one bracket — and it is prudent to assume most of it lands on the top fastener. That is the number your wall has to beat, not the 90 kg the awning weighs.

Failure one · the bolts pull out

The top fixings are in tension every minute of the awning's life, and that tension cycles every time the wind gusts. An anchor in weak or wrong material — or one that is quietly corroding — works its way out over months or years, then lets go without warning. Australian workplace safety regulators have investigated awning collapses caused by exactly this: expansion anchors prised out of their substrate, with corrosion named as a leading cause.

Failure two · the wall crushes

The bottom of the bracket presses into the wall just as hard as the top pulls out. Soft substrates — render over foam, aerated concrete panels, a single skin of veneer brick — crumble under that pressure. The bracket rotates, which shortens the lever it has to fight with, which increases the pull on the top bolts. It gets worse on its own.

Get the position and the fixings right and the installation should give long, trouble-free service. Get them wrong and no amount of care later will fix it.

2 · Six things to work out, in this order

Do them in order. Each one can change the answer to the next, and the last thing you want is a delivered awning that doesn't suit the wall.

  • 1How high does it need to be?
    Front clearance plus the fall across the projection sets your bracket height. If that height doesn't exist on your wall, nothing else matters.
  • 2What is the wall actually made of?
    Not what it looks like. What's behind the surface. This is the single most important question in the guide.
  • 3Wall, eave, roof or something else?
    If the wall can't take it, there may be a better load path a metre away.
  • 4Will the brackets land where they need to?
    Brackets have to sit beside the arm shoulders. Studs and window heads don't care about that.
  • 5What's in the way?
    Downpipes, lights, meter boxes, flues, windows that still need to open.
  • 6How exposed is the spot?
    Wind, salt, and what happens the day nobody's home to retract it.

1 · How high does it need to be?

Two numbers drive this. The first is the clearance you want at the front bar — the height people walk under. Around 2100 mm is comfortable; manufacturers commonly recommend 2000–2200 mm and Australian fitting instructions often set a minimum installed height of around 2500 mm at the wall. Treat that as a floor, not a target — on a deep projection it will not on its own give you the clearance you want at the front bar. Always work from the formula.

The second is fall. The awning must slope down and away so rain runs off instead of pooling. That slope, multiplied by the projection, is how much lower the front bar sits than the brackets.

pitch ≥ 14° FALL 750 mm FRONT CLEARANCE 2100 mm — walk under it BRACKET HEIGHT 2850 mm above the paving PROJECTION 3000 mm Work it out first Bracket height = clearance you want + fall across the projection Fall per metre of projection 10° ≈ 176 mm minimum 14° ≈ 250 mm good · OK in rain 25° ≈ 466 mm steep Too flat and rain ponds on the fabric. Worked example 3.0 m projection at 14° Fall = 3.0 × 250 = 750 mm Clearance wanted = 2100 mm Brackets at 2850 mm Check that height exists before you buy.
Bracket height = the clearance you want + the fall across the projection. Work this out before you order. On a single-storey house with a low eave, a 4 m projection at a proper pitch often simply does not fit.
Pitch is structural, not cosmetic

A flat awning holds water. Twenty millimetres of ponded rain on a 15 m² awning is about 300 kg — several times the weight of the awning itself, hanging at the worst possible point on the lever. Manufacturers set a minimum inclination of around 10°, and at least one states that use in rain is not permitted below a 25% gradient — about 14° from horizontal. If you want to sit under it in a shower, aim for 14° or steeper.

2 · What is the wall actually made of?

This is the question that decides whether the job is straightforward or needs an engineer. A rendered wall and a solid double-brick wall look identical from three metres away and behave completely differently under load.

Brick veneer Most common Australian home MOST DANGEROUS 110 mm brick skin —NOT structuralCavity: use a sleeve sothe brick isn't crushedTimber/steel frame —you must reach thisBolts must pass through the brick and landin a stud, nogging or top plate behind it. Double brick / solid masonry Older and premium homes BEST CASE Solid, load-bearingChemical anchor orsleeve anchor, M10–M12Fix into the brick FACE,never the mortar joint7+ courses above,4+ below the bracketCored/perforated bricks hold far less — use aresin anchor with a mesh sleeve. Timber frame + cladding Weatherboard, fibre cement, steel NEEDS A SPREADER Cladding carriesZERO loadStud at 450 or 600 mmcentres — your bracketprobably won't line upFix a hardwood or steel spreader across everystud it crosses, then mount brackets to that.Through-bolt with a backing plate where you can. Rendered foam cladding EPS / polystyrene under render THE TRAP Looks and drills likemasonry. Isn't.Stand-off / thermalspacer anchor carriesload past the foamDrill a test hole. If the dust is white and fluffyand the bit drops through, it's foam. Stop. Aerated concrete (Hebel) Lightweight AAC panels WON'T HOLD Best rated fixing holdsabout 1.5 kN.A 5 × 3 m awning needs3–4 kN per bolt.Do not face-fix an awning to AAC panels.Bolt through to the frame or slab behind, or standthe awning on its own posts. Keep 100 mm off edges. Concrete / core-filled block Slab edge, beam, filled besser STRONGEST M12 anchor in 20–25 MPaconcrete ≈ 6 kN.Plenty — if embedmentand edge distances are met.Keep 100 mm+ from any edge, avoid thereinforcement, and clean the hole properly.
The six substrates you'll meet on Australian houses. The brick you can see is very often not the thing holding the awning up.
Find out for certain — drill a test hole

Pick a spot that will end up behind the bracket, or somewhere hidden, and drill in slowly with a 6 mm masonry bit. Read what comes out:

  • Red or brown gritty dust, steady resistance → clay brick. Note whether the bit suddenly drops through after 30–40 mm — that means the brick is cored, and cored bricks hold much less than solid ones.
  • Grey dust, hard going, bit wants to skate → concrete or core-filled block. Good news.
  • White fluffy dust or almost no resistance, bit plunges → foam insulation under render. Stop. You need stand-off anchors and probably advice.
  • Fine white powder, very easy drilling, no grit → aerated concrete (Hebel). It will not hold a folding arm awning by face fixing.
  • Timber shavings after a thin hard skin → cladding over a timber frame. You'll need a spreader.

Measure how deep the bit travels before it changes material. That number tells you the thickness of the skin you're going through, and therefore how long your fixings need to be.

Brick veneer deserves its own warning

Most Australian houses built since the 1960s are brick veneer: a single 110 mm skin of brick standing in front of a timber or steel frame, connected by thin wall ties across a cavity. That brick skin is cladding. It is not holding your house up and it is not designed to hold your awning up either.

The ties are made to stop the brick falling over sideways in the wind, not to drag a cantilevered load back into the frame. Fix an awning to veneer brick alone and you have three ways to fail: the anchor pulls out, the anchor brings a cone of brick with it, or a whole panel of brickwork rotates off its ties.

The fix is to go through the veneer and land in the frame behind it, with a rigid sleeve or spacer over the bolt so the bracket bears on the sleeve rather than crushing the brick. Don't pack the cavity solid — it's there to stop water reaching the frame.

You can't find studs through brick

A stud finder won't see through 110 mm of brick and an air gap. Locate the studs from inside the house, or work off window and door jamb positions, and transfer the measurements outside. Frames are generally at 450 or 600 mm centres, but verify rather than assume.

3 · Wall, eave, roof — or something else?

Face-fixing to the wall is the default, but it isn't always the strongest option available. If the wall is marginal and the roof structure is sound, a rafter bracket may be a far better answer than reinforcing the wall.

1 · Face-fixed to wall Simplest — if the wall is sound Everything rests on what is behind the surface you can see. 2 · Top-fixed under eave Gains height, keeps the wall clear Only into solid framing above — never into eave lining board. 3 · Roof / rafter bracket Best when the wall can't be used Bolt to the rafters, not the battens, and reseal every roof penetration. 4 · Fascia — usually NO Colorbond fascia is 0.4–0.55 mm steel. Timber fascia is ~19 mm, nailed into the end grain of the rafters. Neither holds a folding arm awning. Go past it to the rafters, or fit a proper structural timber behind it first.
Four mounting methods. Bracket kits differ between them — a rafter bracket set is not the same part as a wall bracket, so decide the method before you order.
Fascia is not a structure

Colorbond fascia is roll-formed sheet steel, typically 0.42 mm base metal thickness. Timber fascia is typically a 19–25 mm board nailed into the end grain of the rafter tails — the weakest possible direction to fix into. Neither is remotely capable of the 3–4 kN per bolt an awning demands. If the fascia line is where the awning has to go, the correct approach is to bridge between the rafter ends with proper structural timber (90 × 45 mm treated pine or heavier), fix a new structural fascia to that, and mount the awning to it.

One more rafter rule: the end rafters at the corner of a house are not load bearing. Come in at least two rafters from the corner.

4 · Will the brackets land where they need to?

Bracket positions are not free. The entire cantilever load enters the awning at the arm shoulders, so a bracket must sit right beside each one. On many systems that band is roughly 100 to 250 mm — close enough to pick up the load, not so close that it fouls the mechanism. Always work from your awning's own bracket table.

Looking at the wall — where the brackets go The whole cantilever load enters the awning at the arm shoulders. A bracket far from a shoulder twists the square bar instead of holding it. cassette / roller square bar 100–250 mm either side 100–250 mm either side Arm shoulder bracket it on both sides Centre support stops the cassette sagging — it does not carry the cantilever Keep-out zone — never put a bracket over an arm shoulder, centre support or hood bracket Count: roughly one bracket per 1.2–1.5 m of width — and add more as the projection grows. A 4 m wide awning at 2 m projection may need 2 brackets; the same width at 4 m projection needs 4 or 5. Always follow your awning's own bracket table.
Bracket positions are set by the awning, not by the wall. Measure the arm shoulder positions on your actual awning before you mark anything out.

A centre bracket does a different job. It stops the cassette sagging between the arms, which matters for how the awning looks and how squarely it closes — but it does not carry the cantilever. Adding one is never a reason to move the arm brackets away from the shoulders.

When the brackets and the studs disagree

On a timber or steel framed wall, this is the usual conflict: the arm shoulders are at, say, 640 mm and 3860 mm from one end, and the studs are at 600 mm centres. Nothing lines up. The answer is a spreader.

Straight into the cladding The brackets landed between the studs. Weatherboard, fibre cement and steel sheet tear out long before the bolt does. Spreader across every stud 190 × 45 or 240 × 45 hardwood / LVL, or 100 × 50 steel SHS Two coach screws or through-bolts into every stud it crosses. Now the brackets can sit exactly where the arm shoulders need them.
A spreader converts a point load into a line load. It also frees the brackets to sit exactly where the arm shoulders need them.

3 · Choosing the brackets and fixings

Check what fixings, if any, come in the box — where they are supplied they are usually sized for solid brick or concrete, and if your wall is anything else you must choose your own.

Awning manufacturers commonly specify two M12 × 75 mm coach bolts or dyna-bolts per wall bracket, or M10 × 75 mm for rafter and fascia brackets. Those are the sizes; whether they will hold depends entirely on what they go into.

Indicative working loads assembled from various suppliers' published data at their stated embedment and edge distances, for comparison against roughly 3 kN of uplift per bracket — most of which lands on the top anchor. This is not a specification. Anchor capacity must be assessed against the actual substrate, embedment, edge distance and an appropriate safety factor, using the anchor manufacturer's current data.
Anchor and substrate Tension General indication only
M12 expansion anchor in 20–25 MPa concrete ≈ 6.1 kN Ample
M10 sleeve anchor in solid / 3-hole brick ≈ 3.9–4.1 kN Workable
M12 coach screw ~96 mm into seasoned framing timber ≈ 4.3 kN Workable — but a 45 mm stud can't give you 96 mm face-on
Approved plug in solid brick ≈ 2.0 kN Marginal — needs several per bracket
M12 chemical anchor in hollow concrete block ≈ 1.8 kN Marginal — core-fill or use a mesh sleeve
M8 coach screw + plug in aerated concrete (Hebel) ≈ 1.5 kN Not adequate
Approved plug in perforated / cored clay brick ≈ 1.2 kN Not adequate on its own
Nylon wall plug, any substrate — Never. Nylon creeps under permanent load, and a hot north-facing wall makes it worse

Prefer chemical anchors in masonry

An injection (resin) anchor puts no expansion force into the brick, so it can't split it, and in cored or hollow units a mesh sleeve lets the resin key across the webs. It also resists the slow ratcheting-out that kills expansion anchors under cyclic wind load.

The catch: they are unforgiving about hole cleaning. Blow, brush, blow — twice. Drilling dust left in the hole can halve the bond.

Through-bolt where you can

A bolt that passes right through the wall or the stud and picks up a large washer or backing plate on the far side is stronger and far more inspectable than any insert. Where access allows it, take it.

After investigating awning collapses, Australian regulators have asked designers to consider through-bolts instead of insert-type anchors in critical support locations.

Masonry geometry rules that are easy to miss
  • Fix into the face of the brick, not the mortar joint. Perimeter joints are often only partly filled and split out when drilled.
  • Keep back from edges — at least 100 mm from any corner, control joint or opening, and more in perforated brick.
  • Manufacturers commonly ask for seven or more courses of brick above the mounting position; trade practice adds four or more courses below a spreader plate.
  • Don't put two anchors in the same brick if you can avoid it, and keep them well apart vertically.
  • Within about a kilometre of surf, use 316 stainless fixings. Corroded anchors are a documented cause of awning collapse.

4 · Walking the site

5 · What's in the way?

Every one of these has stopped an installation on the day. Ten minutes with a tape now saves a return trip and a repatched wall later.

Walk the wall before you buy anything 1 2 3 4 5 6 7 What to check for 1 · Downpipes & stormwater Can't be crossed. Relocate or shift the awning. 2 · Window and door swings Will the sash still open past the cassette? 3 · Lights, cameras, sensors The cassette will sit ~250 mm off the wall. 4 · Air conditioner & flues Never blank off an appliance flue or vent. 5 · Meter box & switchboard Must stay clear and accessible. 6 · Subfloor and wall vents Blocking them causes damp. 7 · Trees, boundaries, neighbours Nothing may overhang the boundary line. Before you drill: check inside for wiring, water and gas in the wall you are about to bolt into.
Mark it all up before you commit. Remember the cassette projects roughly 250 mm from the wall, so anything within that band is a clash even if it is nowhere near the brackets.

6 · How exposed is the spot?

Here is the thing most people never get told: a folding arm awning is not a wind-resistant structure. It's a fabric sail on two spring-loaded arms with nothing supporting the outer edge. Manufacturers rate them under the European standard EN 13561, and most folding arm awnings are rated to Wind Class 2 or 3 (38 or 49 km/h).

EN 13561 wind classes as published by awning manufacturers. Turnils publishes Class 2 (up to 38 km/h) for the Sirocco FA22 Piccolo and Class 3 (up to 49 km/h) for the FA42, FA44, FA45 and FA48 — always "up to", and only as good as your fixings.
Class Wind speed What it means
Class 0 Not tested No rating. Retract it in any real wind
Class 1 Beaufort 4 · ≈ 20–28 km/h May stay extended in a moderate breeze
Class 2 Beaufort 5 · ≈ 29–38 km/h The practical ceiling for folding arm awnings. Above this the awning must be retracted
Class 3 Beaufort 6 · ≈ 39–49 km/h Turnils rates the Sirocco FA42, FA44, FA45 and FA48 in the Awnly range to Class 3 (49 km/h); heavier braced systems also sit here

Thirty-eight kilometres an hour is a fresh breeze — the kind of afternoon southerly that arrives on the Australian coast most weeks. It is a fraction of the wind your house is designed for. The awning survives by being retracted, not by being strong.

The wind class you get depends on your fixings, not on the awning

European installers are required to declare, in writing at handover, what wind class the installation actually achieved — because the number depends on the fasteners used and the substrate they went into, both of which are the installer's decisions. A Class 2 awning bolted into soft brick is not a Class 2 installation.

Fitting a wind sensor is the single best protection for a motorised awning, because the day it matters is the day nobody is home. Set it to retract below your awning's rated limit, and lower again on an exposed or coastal site.

Also worth thinking about

  • Salt. Coastal sites need stainless fixings and a shorter maintenance interval — six months rather than a year on powder coating.
  • Aspect. A west-facing wall gets fierce late-afternoon sun and the hottest wall surface; a north-facing awning gives the most useful shade for the most hours.
  • Funnelled wind. A gap between two buildings, a driveway alongside, or a first-floor balcony above can all accelerate wind locally well beyond what the rest of the yard feels.
  • Trees. Falling branches and constant leaf litter both shorten fabric life, and sap staining is generally not covered by fabric warranties.

5 · When to stop and get help

There is no shame in this. Half the value of a good installer is knowing which walls to walk away from.

Get professional advice before you go any further if…
  • The test hole says foam under render, aerated concrete (Hebel), or you can't identify the material at all.
  • The wall is brick veneer and you cannot confirm where the frame behind it is.
  • The brickwork is cracked, spalling, drummy, or has efflorescence or rust staining around existing fixings.
  • The awning is wider than about 5 metres or projects more than 3.5 metres — loads climb steeply and the margin for error disappears.
  • You are planning to fabricate your own brackets. Queensland requires engineering design to be certified by a Registered Professional Engineer of Queensland, and Victoria and NSW run their own engineer registration schemes — check your state. In 2025 a Queensland company was fined $70,000 and its director $5,000 (no convictions recorded) after a 620 kg awning collapsed during installation and seriously injured a worker; its brackets had been designed in-house and never certified.
  • The awning would go over a public footpath, a driveway used by others, or across a boundary.
  • You are working at height above a hard or sloping surface and don't have safe access.
  • Anything at all needs to be hardwired — that is licensed electrical work in every Australian state and territory.

6 · Go / no-go checklist

Tick every line before you order the awning. Any blank is a decision you haven't made yet.

  • Bracket height available. Clearance wanted + fall across the projection, and that height physically exists on the wall.
  • Pitch achievable. At least 10°, and steeper if you want to use it in rain.
  • Substrate identified by test hole — not by appearance — and its thickness measured.
  • Load path confirmed. You know exactly what structural element each bracket bolt will land in.
  • Fixings chosen and rated for that substrate, with a real margin over 3–4 kN per top bolt.
  • Edge distances and course rules met — 100 mm from edges, courses above and below.
  • Bracket count and positions checked against the awning's own bracket table, with one beside every arm shoulder.
  • Spreader specified if the wall is framed, clad, or the studs don't line up.
  • Obstructions cleared — downpipes, lights, meter box, flues, vents, window swings.
  • Services checked inside the wall before drilling.
  • Exposure assessed and a wind sensor specified if the awning is motorised.
  • Corrosion grade chosen — 316 stainless if you're near the coast.
  • Access and crew planned. Two people minimum, three or more above 5 metres wide.
  • Boundaries and any council or strata requirements confirmed.
One last sanity check

Stand where the front bar will be and look up. Ask yourself honestly: if the top bolts let go right now, what happens? If the answer involves a table, a doorway or a walkway that people use, spend the extra hour on the fixings.

Next: Part 2 — How to install a folding arm awning, step by step.

About the figures in this guide. Load figures are indicative and drawn from published manufacturer and anchor-supplier data, plus a worked example for a 5 × 3 m awning at its rated wind limit. They are provided to show the order of magnitude involved, not as a structural design. Your awning's own installation manual and your anchor supplier's current technical data take precedence over anything here. Where a wall is marginal, get a qualified engineer or a licensed installer to size the fixings.

Sources consulted include Turnils/Sirocco FA Series installation manual (Hunter Douglas Australia), Contract Blinds "Fitting Instructions of Folding Arm Awning — Australia", Aluxor product and maintenance documentation, markilux and weinor fitting instructions (EN 13561), SunAir and SunSetter installation manuals, Ramset and Hilti Australian anchoring data, CSR Hebel Fixing to Hebel guide, AS 1720.1 timber connection design, AS 3700 masonry, AS 5216 fastenings in concrete, WorkSafe Queensland awning collapse safety alert, and the Office of the Work Health and Safety Prosecutor (Qld) awning installation prosecution.

Keep this one handy on site, and read the other half of the pair before you drill.

Download the PDF Next: how to install it All installation guides