Guttering drop measurement

[fourstardan]

Hiya,

doing 8 meters tomorrow and planning the job.

Run of 8500mm / 350 = 24mm

Does this mean the highest end needs to be 24mm below the end of the run?

[CoolHands]

Yes, assuming you’re using the 1:350 gradient as the required drop which after a quick search seems correct. 3mm per metre.

[J6542]

If you’re using deep flow gutters then 10mm will be fine. You don’t want the gutter to be to far below the tiles.

[fourstardan]

It's floplast.

I'm really umming and arring about whether to do eaves protector and lift the tiles.

[RATATTAK]

fourstardan said:

Does this mean the highest end needs to be 24mm below the end of the run?

No, the highest end needs to be 24mm above the end of the run.

[chris1roll]

Tio I learned a while back - Tape a 3mm spacer to the end of a 1m spirit level, there's your drop.

[fourstardan]

RATATTAK said:

No, the highest end needs to be 24mm above the end of the run.

Yes, you win a prize for the hidden mistake, where do I send the old guttering too lol

[fourstardan]

Well the jobs done....

Not sure the gutters are bang on slope wise as I've got about 2mm of pooling in some spots. Builder mate says I am probably worrying about nothing.

I've got brackets every 75CM so will see how the rain goes over the next few days.