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Author Topic: Adhesive for galvanised sheet to metal?  (Read 584 times)

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Offline Dunnes

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Adhesive for galvanised sheet to metal?
« on: February 20, 2019, 11:25:58 am »
Dagse dogs

Can I please pick your brain for info on adhesive glues?

I am building some cupboard tables to use outside to store all our stuff. Our house is a bit small and Magdaleen doesnt want a Wendy.

The structure is made of mild steel and I want to glue galvanised metal sheeting to the sides to cover and waterproof it. It doesnt have to be very strong. Only to hold its own weight onto the steel structure.

What glue should I use? Would contact adhesive work on galvanised sheeting? What about silicone?

I found some info on www.galanizeit.org and the suggest some two part epoxies or polyurethane glues such as gorilla glue. But gorilla glue is very expensive.

I have 77m of angle iron onto which the sheets must be pasted, so rivets will be a massive schlep (500+ holes drilled) and I have to waterproof the overlaps anyway, so I might as well just use glue.

Thanks
 

Offline Oros

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Re: Adhesive for galvanised sheet to metal?
« Reply #1 on: February 20, 2019, 11:40:28 am »
Sikaflex, is your answer.
Also why not use  rivets or self drilling screws?
« Last Edit: February 20, 2019, 11:43:04 am by Oros »
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Offline ClimbingTurtle

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Re: Adhesive for galvanised sheet to metal?
« Reply #2 on: February 20, 2019, 12:01:00 pm »
Prattley also does a 2-part epoxy - similar to the one you use to fix the hole in the crank case after you klap a rock....

I also have another supplier that I will contact with the question.....

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Offline Dux

Re: Adhesive for galvanised sheet to metal?
« Reply #3 on: February 20, 2019, 12:02:10 pm »
Sikaflex, is your answer.
Also why not use  rivets or self drilling screws?

I would use Sikaflex and large head rivets
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Offline Kortbroek

Re: Adhesive for galvanised sheet to metal?
« Reply #4 on: February 20, 2019, 12:03:04 pm »
Sikaflex, is your answer.
Also why not use  rivets or self drilling screws?
This is the answer. There's a another brand called sodaflex which is as good and a bit more affordable

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Offline Gérrard

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Re: Adhesive for galvanised sheet to metal?
« Reply #5 on: February 20, 2019, 12:07:11 pm »
Sikaflex my trailers bed is glued to the frame with it. Ask Draad which specific one for your application
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Offline K-9

Re: Adhesive for galvanised sheet to metal?
« Reply #6 on: February 20, 2019, 01:08:16 pm »
Steel roofing gets very, very hot in the and very cold in winter.  The expansion and contraction is huge, causing big movement that could/will cause the sheets to come loose if glued.

Also the sheets are galvanised and have a release agent on them and we spray them with oil and diesel to stop white rust forming while in storage.  (water gets sucked into between the sheets using capillary action and then forms white rust, so we spray the ends of galvanised sheeting while in storage).  They need proper degreasing to get the releasing agent off and I would prime with a galvanised primer, before using epoxies.  Galvanising reacts and turns to a white powder under paint and other products rendering the "glue" useless.

I would do the above and use 3 or 4 nails or rivets on each side to keep it place should it come loose then it will stay in place and nails will prevent some movement. 

There is a reason why roofs are nailed on not glued on.
« Last Edit: February 20, 2019, 01:11:07 pm by K-9 »
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Offline Bill the Bong

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Re: Adhesive for galvanised sheet to metal?
« Reply #7 on: February 20, 2019, 01:27:23 pm »
Speed screws.  The ones you screw if with a drill.
 

Offline ktmmer

Re: Adhesive for galvanised sheet to metal?
« Reply #8 on: February 20, 2019, 01:34:29 pm »
Speak to @Draad
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Offline Draad

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Re: Adhesive for galvanised sheet to metal?
« Reply #9 on: February 20, 2019, 03:01:39 pm »
Call me its easy  :thumleft: 0eight24909109
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Offline Grumpleton

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Re: Adhesive for galvanised sheet to metal?
« Reply #10 on: February 20, 2019, 03:48:14 pm »
a product called Sticks Like Sh*T and it does stick like shit comes in white and clear.
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Offline met eish

Re: Adhesive for galvanised sheet to metal?
« Reply #11 on: February 20, 2019, 06:42:08 pm »
Steel roofing gets very, very hot in the and very cold in winter.  The expansion and contraction is huge, causing big movement that could/will cause the sheets to come loose if glued.
There is a reason why roofs are nailed on not glued on.
Sikaflex is a temporary solution, wont last indefinitely, use hex selfdrill with a pilot hole  ;)
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Offline Oubones

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Re: Adhesive for galvanised sheet to metal?
« Reply #12 on: February 20, 2019, 09:10:30 pm »
Build It, buy yourself a large container of tex screws, they have them in 500 packs.
500 screws is nothing with a rechargeble or variable speed drill!
You can thank me later.
Membrane and stop a leak for the waterproofing.
You should get away with a few hours work and a couple of hundred rands.
Sika products are very good but bit pricy.
Silicone is not a glue and most are acidic that helps the rust along.
You want a short plymer string adhesive if you want to glue!
For that Draad is your guy!
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Offline Dunnes

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Re: Adhesive for galvanised sheet to metal?
« Reply #13 on: February 21, 2019, 07:12:43 am »
Thanks gents. I will give Draad a call. The reason for not using tex screws is that the thing must also look nice from the outside. Rivets will look quite nice, but Im just too to drill so many rivets.

I got the galvanized sheeting from Mikie. It was his old bird cage thats been standing outside for years so hopefully I wont have to degrease it.

I glued two small pieces together with contact adhesive yesterday. I will test it this morning to see how strong it will hold.
Contact adhesive is a bit cheaper than the sikaflex products.
 

Offline Oros

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Re: Adhesive for galvanised sheet to metal?
« Reply #14 on: February 21, 2019, 07:46:51 am »
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Offline Kortbroek

Re: Adhesive for galvanised sheet to metal?
« Reply #15 on: February 21, 2019, 09:05:12 am »
Thanks gents. I will give Draad a call. The reason for not using tex screws is that the thing must also look nice from the outside. Rivets will look quite nice, but Im just too to drill so many rivets.

I got the galvanized sheeting from Mikie. It was his old bird cage thats been standing outside for years so hopefully I wont have to degrease it.

I glued two small pieces together with contact adhesive yesterday. I will test it this morning to see how strong it will hold.
Contact adhesive is a bit cheaper than the sikaflex products.

My opinie, Contact Adhesive is sommer 'n pot tos. Dit hou nooit nie, raak bietjie warm dan raak dit sag of as dit hard raak kraak dit uitmekaar. Nog nooit sukses gehad met dit op enigeiets nie.

'n R200 (ek dink) tube sodaflex sal ver gaan.
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Offline Draad

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Re: Adhesive for galvanised sheet to metal?
« Reply #16 on: February 21, 2019, 12:29:07 pm »
Steel roofing gets very, very hot in the and very cold in winter.  The expansion and contraction is huge, causing big movement that could/will cause the sheets to come loose if glued.
There is a reason why roofs are nailed on not glued on.
Sikaflex is a temporary solution, wont last indefinitely, use hex selfdrill with a pilot hole  ;)

Bwahahahaha where do you get your info
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Offline Kortbroek

Re: Adhesive for galvanised sheet to metal?
« Reply #17 on: February 21, 2019, 01:42:33 pm »
Steel roofing gets very, very hot in the and very cold in winter.  The expansion and contraction is huge, causing big movement that could/will cause the sheets to come loose if glued.
There is a reason why roofs are nailed on not glued on.
Sikaflex is a temporary solution, wont last indefinitely, use hex selfdrill with a pilot hole  ;)

Bwahahahaha where do you get your info

Of the top of my head things that are fitted/assembled permanently with sikaflex or similar:
Solar panels
Car windscreens
Aircraft windscreens
aluminium canopy panels
marine fittings on boats

I'm sure there are many more.
« Last Edit: February 21, 2019, 01:42:56 pm by Kortbroek »
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Offline Grumpleton

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Re: Adhesive for galvanised sheet to metal?
« Reply #18 on: February 21, 2019, 01:42:52 pm »
Dagse dogs

Can I please pick your brain for info on adhesive glues?

I am building some cupboard tables to use outside to store all our stuff. Our house is a bit small and Magdaleen doesnt want a Wendy.

The structure is made of mild steel and I want to glue galvanised metal sheeting to the sides to cover and waterproof it. It doesnt have to be very strong. Only to hold its own weight onto the steel structure.

What glue should I use? Would contact adhesive work on galvanised sheeting? What about silicone?

I found some info on www.galanizeit.org and the suggest some two part epoxies or polyurethane glues such as gorilla glue. But gorilla glue is very expensive.

I have 77m of angle iron onto which the sheets must be pasted, so rivets will be a massive schlep (500+ holes drilled) and I have to waterproof the overlaps anyway, so I might as well just use glue.

Thanks


Gents I dont think you are reading the application , these are cupboards that are going outside and the sheets just have to hold there own weight, I swear by Sticks like Sh*T and use it every day in my day to day work and Sikaflex will also work
« Last Edit: February 21, 2019, 01:44:53 pm by Grumpleton »
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Offline Draad

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Re: Adhesive for galvanised sheet to metal?
« Reply #19 on: February 21, 2019, 03:42:35 pm »
Huge variety of Sikaflex...depends what you wanna do ! or go the Chinese way and you will still contact me later after "the shit does not stick anymore"  :imaposer: :imaposer: :imaposer: :imaposer:
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