Author Topic: Wooden (zinc) gutter casing, thoughts?  (Read 519 times)

0 Members and 1 Guest are viewing this topic.

Online threesixright

  • Posts: 498
Wooden (zinc) gutter casing, thoughts?
« on: September 17, 2019, 12:58 PM »
Hi All,

Bear with me [embarassed], I made a rough sketch  (cross section) of a new to-be-build casing for my gutter. Dimensions are not exact, but good enough to give some idea.  The wall is ~ 14 meters long and roof is sloped (7 degrees). The casing will be hanging just over 2200 mm above ground. The roof beams are space ~ 600mm apart.


1. The zinc gutter will me mounted on metal hooks, these will be screws to the structural roof beams.
2. The support boards (~ 21mm thick) I want to screw with 3 screws to the beam, they are there to make the (horizontal boards) a level support to screws to.

My questions:

1. The casing I planned to make, will be 21mm okoume plywood (and treat it for outside). Is okoume plywood a good for this?

2. My concern is the structural construction of the horizontal  and vertical boards. I was thinking to use some (SIPO) domino's (8x50 domino any good?) to connect to vertical board to the horizontal board and glue it (Titebond III). Would this be sufficient?

3. If using the domino's: what would be better to use the domino's in a vertical or horizontal position? I also feel something is sill missing, maybe a square 50x50 (mm) beam that serves as extra support in the corner?

3. Then to the screws, I wanted to use SPAX not sure about the size: 4.5x70 to 5.0x70? Something better (longer, thicker?)?

Would love to hear your thoughts how to do this (the right way  [laughing])!

Thanks a lot!

Festool USA does not pre-approve the contents of this website nor endorse the application or use of any Festool product in any way other than in the manner described in the Festool Instruction Manual. To reduce the risk of serious injury and/or damage to your Festool product, always read, understand and follow all warnings and instructions in your Festool product's Instruction Manual. Although Festool strives for accuracy in the website material, the website may contain inaccuracies. Festool makes no representations about the accuracy, reliability, completeness or timeliness of the material on this website or about the results to be obtained from using the website. Festool and its affiliates cannot be responsible for improper postings or your reliance on the website's material. Your use of any material contained on this website is entirely at your own risk. The content contained on this site is provided for informational purposes only and does not constitute professional advice.

Offline RKA

  • Posts: 1917
Re: Wooden (zinc) gutter casing, thoughts?
« Reply #1 on: September 17, 2019, 02:03 PM »
How are these gutters normally secured and what led you down the path of boxing them in like this?  I'm assuming these are commercially available gutters?

I don't do much structural work, but my first concern is putting a ladder against the top edge of that box.  I wouldn't want to rely on a couple of dominos and 19mm ply to keep the top of the ladder stable.  Even if it works on day 1, think 20 years in the future. 

Relating to the plywood, I'm not familiar with the stuff.  Even if it was rated for exterior use I would not be a fan of using it where it would be constantly exposed to moisture, but that's probably my own bias.

Online threesixright

  • Posts: 498
Re: Wooden (zinc) gutter casing, thoughts?
« Reply #2 on: September 17, 2019, 03:04 PM »

The gutters are placed in hooks. That will not change. 

It's about the casing (I found  okoume plywood is often used ~ 22 mm FWIW), it's similar of what was there before the rebuild. Unfortunately the demolition crew removed the construction before I could document it.

I agree about he ladder, my concern was also its not strong enough.

I looked around but couldn't find clear construction drawings how this is normally attached.

Here a photo how it would roughly look.