How do I seal metal shed base?

In message , Pedro Popadopolous writes

How big are the gaps that need filling, my first thought is some general purpose building silicone sealant.

Very small, you couldn't ger a knife blade through, just enough for water to trickle in

:-/

Just put one of those up, I used expanding foam and gutter sealant. (Then paid a visit to Ikea and saw that they had done the same with a temporary warehouse ;) )

Lee

Smaller than the gaps in ours then ;) I was too lazy to level the base properly...

Lee

Pedro,

Id go for a good quality silcone sealant, its important that is has high elasticity as the metal will expand a great deal more than the conrete with temperture. If go for a heavy duty exterior silcone sealant. I think some gutter sealants may fit the bill. Must be highly elastic.

Kev

You could try using silicone sealant that is what I am going to use and I put my metal shed on slabs and I bort ready mix cement to fill the gaps in the slabs that worked great all I have got to do is lift the shed up so I can put the silicone down on the slabs so when put the shed back down so it will push the silicone sealant out so it will be water tight

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Plus the method suggested may actually trap moisture and lead to the metal rusting faster.