Retractable Awning Special Brackets

Retractable folding arm awnings are a popular shading solution for patios and terraces. However, single storey buildings, including bungalows, extensions, conservatories, and orangeries, present unique installation challenges not encountered on standard two storey houses. These challenges can be confidently resolved using a range of specialist steel bracketry, from spreader plates to goalpost frames, each suited to different building scenarios.

Every retractable awning must ideally  be installed at a pitch, typically a minimum of 14 degrees. This ensures rainwater runs off the fabric rather than pooling, while also improving sun shading performance. On a single storey building, the distance between the top of the patio doors and the roofline is often very small, leaving insufficient room to mount the awning high enough.

If you are using the awning purely for sun shade then of course the awning pitch can be less but the onus is on the operator to close this is rainy conditions.

[IMAGE: side profile diagram showing mounting height, pitch and walk under height]

On a two storey house, the weight of the upper storey brickwork provides downward compression on the ground floor wall to help resist pull out forces. A single storey building lacks this compressive load, meaning standard awning brackets could literally pull the bricks away from the structure. The wind loading on an extended awning acts as a massive lever, making proper specialist bracketry essential to ensure a safe installation.

[IMAGE: extended awning in wind, arrows indicating wind load on fabric]

[IMAGE: extended awning in wind, arrows indicating wind load on fabric]

The table below shows the required mounting height for various awning projections at different pitch angles, based on a 2-metre walk under height:

[IMAGE: simple chart or graphic highlighting required heights vs typical bungalow wall height]

Spreader plates are vertical metal plates with multiple fixing points distributed down the length to spread the load across a larger area of brickwork. They are ideal for single storey extensions with adequate height or above wide bi-fold doors where steel lintels cannot handle twisting forces. They are also crucial on cavity walls where the outer brick leaf needs extra support, though they do not solve height issues.

[IMAGE: close up of spreader plate with multiple fixings on brick wall]

Cantilever brackets, or gutter brackets, spread the fixing load down the wall facade while featuring an arm that extends forward and upward. This wraps under and in front of the fascia board and guttering to position the awning cassette above the roofline. They are required on bungalows where the wall height below the eaves is too low to achieve a 14-degree pitch.

[IMAGE: cantilever brackets lifting cassette in front of gutter on bungalow]

Stand-off brackets are heavy-duty spacer brackets that project the awning away from the wall to clear exterior plumbing. When a downpipe or soil pipe runs vertically exactly where the awning needs to sit, these brackets allow the awning cassette to bridge the pipework safely without crushing it.

Goalpost frames are freestanding or wall supported box section steel frameworks where the awning is suspended from a horizontal beam. They are necessary on fully glazed elevations, conservatories, or orangeries where there is no solid brickwork available for mounting. They also provide a solution for heavily modified extensions with weak wall materials or for creating standalone shading zones.

[IMAGE: goalpost frame in front of fully glazed doors with awning mounted on cross beam]

Rafter brackets attach the awning directly to the exposed protruding timber roof rafters, bypassing the weak brick wall entirely. Top fix brackets mount the awning to the underside of a solid roof overhang, while roof top brackets bolt directly through the flat roof surface as a last resort. All roof-based solutions require verification of structural strength, and roof top mounts require professional weatherproofing.

[IMAGE: rafter brackets clamped to exposed timber rafters under a roof overhang]

[IMAGE: awning cassette fixed to underside of balcony slab with top fix brackets]

[IMAGE: roof top brackets fixed on flat roof with awning projecting over parapet]

The type of wall construction dictates the bracket choice and the chemical fixings required, as standard rawlplugs are never sufficient. We highly recommend adding an automated wind sensor to any awning installed on a single storey building to protect structurally weaker walls from extreme leverage forces.

[IMAGE: montage of wall types: solid brick, blockwork, timber cladding, glazing, each labelled]

Use this logic to determine your mounting solution:

• Adequate wall height: If yes, check structural soundness; if no, use cantilever, rafter, or goalpost brackets.

• Structural soundness: If yes, use standard brackets or spreader plates; if no, spreader plates are mandatory or use a goalpost frame.

• Surface obstructions: If present, use stand-off brackets for pipes or cantilever brackets for fascias.

• Roof overhangs: If available and structural, consider top fix or rafter brackets for an integrated look.

A minimum pitch of 14 degrees is recommended, requiring a fall of approximately 25 cm per metre of projection to maintain safe water runoff. Retractable awnings feature two distinct designs: End Fix models limit installation options, while Torque Bar models allow brackets to be positioned anywhere along the width to bypass weak lintels. Furthermore, wide cassette awnings are heavily engineered and require bracket strategies calculated on maximum wind loading force rather than static closed weight.