Below is an excerpt from the ultraframe installation guide on how to install gallows brackets.
Box gutter gallows brackets.
When a wendland conservatory roof slopes backwards towards the existing building a box gutter is required.
Gallows brackets are vitally important on conservatories that have a box gutter.
Attachment to timber fascias alone is not sufficient and brick piers gallows brackets and other hangers must be considered.
Large caramel gallows bracket box gutter support 385 x 450mm also available in white or chocolate brown this high quality gallows bracket combines great strength and resilience with a stylish appearance.
Box gutter 20 165mm box gutter adapters 12 265mm box gutter adapters 6 conservatory end caps 22 conservatory ridge 54 cresting finials 18 eaves ridge parts 10 gallows brackets 1 ultraframe downpipe bends 7 ultraframe glazing bar top caps 10 ultralite 500 2 ultralite 500 11 ultralite 500 lean to roof 1 ultralite.
Large gallows bracket box gutter support 385 x 450mm white chocolate brown or caramel.
They protect against movement in roof and maintains the integrity of seals.
Use on many roof systems.
Hidden hanging bracket replaces the need for gallows 165mm box gutter only.
Box gutters must be supported at no more than 2 25m centres.
Manufactured as an internal support for conservatory box gutters but is equally effective for various applications.
The box gutter is 7000mm in length.
I should add that the gallows bracket was constructed from wood and then covered in plasterboard.
This high quality universal large gallows bracket combines great strength resilience with a stylish appearance.
The system has the ability to be fitted easier and faster and contains fewer components.
Manufactured as an internal support for.