Thread: My Observatory
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Old 08-03-2020, 10:10 PM
carlstronomy (Carl)
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carlstronomy is offline
 
Join Date: May 2012
Location: Brisbane
Posts: 442
Ed, thank you so much. I have been looking at what to use for the sealing as the recommended Lexen brand is not available in Australia. One tube came with the POD from Leo but not enough to complete the whole job. I could see by what was used by Leo and what he also mentioned that I would need something better that silicon sealing compound.

Your timing could not be better Just need to find one in grey or clear.

Quote:
Originally Posted by appiice View Post
Hello Carl

When you get to sealing your pod to the slab, have a look for a " non setting mastic " rather than using silicon, silicon will set all the way through and eventually ( quicker than you might think ) when the slab expands and contracts the joint will fail and water will enter the pod, a non setting mastic skins on the surface but does not set all the way through.

Any movement in the slab / pod joint will stay sealed and waterproof.

From memory it is a little more expensive than silicon but better in the long run.

There are many on the market here is one at Bunnings.

https://www.bunnings.com.au/selleys-...alant_p1230169

Ed
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