Gregory Cisco
  • Jackson, WY
  • United States
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Gregory Cisco's Discussions

Abandoning under-slab HVAC ductwork which fills with groundwater seasonally.

Started this discussion. Last reply by Ken Summers Sep 21. 6 Replies

Our company is building a custom home in Wyoming on a site with high ground water. The client wanted to have supplemental forced-air heating and air conditioning. The design called for "waterproof"…Continue

Tags: ductork, HVAC, underground, abandon

 

Gregory Cisco's Page

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Ken Summers replied to Gregory Cisco's discussion Abandoning under-slab HVAC ductwork which fills with groundwater seasonally.
"My largest concern is moisture. I have seen mold forming on interior walls in the heating season wicking moisture from the concrete then blowing onto outside walls. In addition bacteria could also be an allergen that could coming into the home as…"
Sep 21
Diane Chojnowski left a comment for Gregory Cisco
"Hi Gregory, Welcome to Home Energy Pros. Feel free to join the conversation in the Forum and Groups. And share your energy efficiency photos, videos and upcoming events. If you're blogging about home performance, this is the place for…"
Sep 21
Gregory Cisco replied to Gregory Cisco's discussion Abandoning under-slab HVAC ductwork which fills with groundwater seasonally.
"We looked into this. Quite expensive and the applicator would not make any guarantees. Looking at  pumping cementious slurry to fill the voids. Have given up on trying to seal the ductwork."
Sep 19
Gregory Cisco replied to Gregory Cisco's discussion Abandoning under-slab HVAC ductwork which fills with groundwater seasonally.
"That is what I was thinking. Looking into Flo Fill. Probably using two pours - the first would be at the source of the largest diameter ducts. Self-leveling pour as high as possible. Second pour would be from the register boots protruding…"
Sep 19
Eric Kjelshus replied to Gregory Cisco's discussion Abandoning under-slab HVAC ductwork which fills with groundwater seasonally.
"In Kansas City a lot of "cardboard" for supply was used in slab on grade.  1950-1970 If very well drained - no roof leaks no waste water back ups, could still work.   Thats a lot of If's.    Last job I drilled to…"
Sep 15
Robert Zockoff replied to Gregory Cisco's discussion Abandoning under-slab HVAC ductwork which fills with groundwater seasonally.
"Public water systems regularly "reline" the interior of existing 50 year old water mains with an epoxy that is sprayed. This is usually done by a contractor that specializes in that work. It must be safe enough for public water systems !"
Sep 15

Profile Information

Company
OSM Wyoming, Inc.
Role in Home Performance Marketplace
Contractor: general (new/remodel)
Professional Interests
Building the highest quality custom homes in the mountain west.

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At 10:01am on September 21, 2017, Diane Chojnowski said…

Hi Gregory,

Welcome to Home Energy Pros. Feel free to join the conversation in the Forum and Groups. And share your energy efficiency photos, videos and upcoming events. If you're blogging about home performance, this is the place for you!

Don't forget to upload your profile photo.

Thanks!
Diane, HEP Moderator

 
 
 

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