Damp concrete wall joint in grainstore

[Right-arm fast]

Hi,

Just wondered if anybody had experienced grain getting damp at the bottom of concrete panels inside the grainstore.

The panels are 6" thick and 3' high and sunk into the concrete about 4".
Nearly all the way round the building some of the grain against this joint goes mouldy as if moisture is making its way through underneath the panel. Grain is stored long term and so can be in there for a year or more. We have pedestals for grain conditioning which could be pulling moisture in, but even if there weren't any pedestals I think water would migrate under the panel anyway. How can we stop this ?
At the moment we put strips of plastic sheeting about 1' wide at 90 deg along the length of the wall (6" on the floor and 6" up vertically up the wall to keep the grain away from the joint which works but looks terrible when you are clearing the shed as we are now! There has to be a better permanent solution anybody know ?

Cheers

 

[sulky]

Hi,

Just wondered if anybody had experienced grain getting damp at the bottom of concrete panels inside the grainstore.

The panels are 6" thick and 3' high and sunk into the concrete about 4".
Nearly all the way round the building some of the grain against this joint goes mouldy as if moisture is making its way through underneath the panel. Grain is stored long term and so can be in there for a year or more. We have pedestals for grain conditioning which could be pulling moisture in, but even if there weren't any pedestals I think water would migrate under the panel anyway. How can we stop this ?
At the moment we put strips of plastic sheeting about 1' wide at 90 deg along the length of the wall (6" on the floor and 6" up vertically up the wall to keep the grain away from the joint which works but looks terrible when you are clearing the shed as we are now! There has to be a better permanent solution anybody know ?

Cheers

we had the same problem a few years ago we painted on a concrete waterprofer 2 feet up and out it is because there is no dpc membrane on the panels or joint to floor .not sure what the product was it was made by sealocreate like silicone damp wall injection stuff it totaliy soaked in

 

[Right-arm fast]

The moisture I think is coming through the joint between the panel and floor. Would the sealer seal the join up do you think?

 

[sulky]

The moisture I think is coming through the joint between the panel and floor. Would the sealer seal the join up do you think?

if that's the case I have seen it sealed by chiselling the edge of the floor 5mm/10mm to leave a gap for a sealant to go slightly down just below surface of floor ,something like sikaflex pro3 witch is the stuff that concrete panels are sealed with I did one a few years ago by using a sds drill with a bolster chisel then poured hot bitumen in the gap but bitumen is a no go in grain stores now, a large commercial store near me had a foam strip put around the panels as expansion joint then concrete floor up to this and its worse than most