Below is an excerpt from the ultraframe installation guide on how to install gallows brackets.
Conservatory box gutter solution.
Injection moulded adapters are used to ensure seamless and watertight jointing between the classic upvc gutter and the aluminium box gutter.
60mm wide aluminium foil tape with butyl backing for box gutter joints and many more sealing applications.
If the seal is broken water flows behind the gutter and can damage your ceiling and walls.
I should add that the gallows bracket was constructed from wood and then covered in plasterboard.
Drill holes into the overlapping edges of your gutter sections.
The butyl rubber backing can flex and has 60mm foil backed butyl tape 300mm 1m or 2m trusted solution for leaking box gutters 60mm wide aluminium foil tape with butyl backing for box.
Conservatory box gutters are also designed to prevent damp spots and leaking.
Please see photograph on this page for a clearer view.
Do note that with this option the rainwater from the roof of your property will now exit onto your conservatory roof.
The outlet of the box gutter may be blocked by debris or the box gutter outlet simply cannot discharge the water fast enough.
For problem 1 above the solution is a fascia fixing kit.
If the box gutter has no overflow provisions this causes a waterfall over the sides of the box gutter typically running down the walls.
Next coat the inside of the gutter channel with a self etching metal primer.
This is the worst case scenario when it comes to box gutters.
Damage to the box gutter trim.
You can paint this primer directly over the existing liner and any rust that exists.
To restore or repair your rusted box gutter liner you first need to clean the gutter and remove any debris.
They will join your gutters securely.
They re made to catch and drain away the rainwater that falls between the walls and are usually always used for traditional pitched roof conservatories.
Ab conservatories ltd solution was to install one gallows bracket as shown on the right to support the box gutter.
Effectively your existing gutter is removed and the ridge of the conservatory roof is fixed against the fascia.