Hello,

I recently had a Climatemaster geothermal system installed in my house.  Thus far the heat pump performance has been great and I recently posted about my positive experience with the sytem, in another thread.

I am having one minor problem, that I would like to fix. 

The region aroung the geo pipes, where they enter the basement through the poured concrete wall, leaks when it rains.  I area is especially bad and I would like to fix the leaks.  The installer used isobutylene caulk to seal the gap between the concrete and the pipes. However, that is not working very well.   

I want to know what other installers on this board use to seal the gap between the pipes and concrete.

I look forward to your suggestions.

Thanks and regards,

VK

 Hi VK,

Have you talked with the installer about correcting the issue? Seems they would have some responsibility here.

This problem could be caused by an number of things, including improper backfill of the excavation work. Water around the outside of basement wall needs to flow down to the footing and into the drain tile that ties into the sump. The backfill around the outside of the basement is a permeable sand with the last foot or so near ground level is top soil. If the installer backfilled the excavation hole with non-permeable soil, like clay, this will trap water up against the basement wall and allow enough pressure to build to force in past the tubing no matter what you try to seal it with. Bottom line, to fix this correctly, the outside will most likely need to be re-excavated and backfilled to allow water to flow to the footing.  Sorry!

Regards,