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 Leeroy Jenkins Nov 7, 2018. 7 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

Latest Activity

Leeroy Jenkins replied to Gregory Cisco's discussion Abandoning under-slab HVAC ductwork which fills with groundwater seasonally.
"Usually, it’s something like that , but that great you’ve started that kind of project. Constriction are the most difficult, so that’s a bravery of yours. You could check for additional reinforcement bar’s coupling to make it…"
Nov 7, 2018
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, 2017
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, 2017
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, 2017
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, 2017
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, 2017
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, 2017

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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Dennis Heidner replied to John S. Rodenhizer's discussion Using radiant barriers as duct insulation, Aka "Bubble wrap" What value do you assign for R-value?
"I believe one of the issues is how does one defend themselves against an HVAC contractor that…"
6 hours ago
Gabriel Perez replied to John S. Rodenhizer's discussion Using radiant barriers as duct insulation, Aka "Bubble wrap" What value do you assign for R-value?
"I’ll give you an a for effort but even in the best cases bubble wrap ( unless it comes with a…"
7 hours ago
Paul Herron replied to John S. Rodenhizer's discussion Using radiant barriers as duct insulation, Aka "Bubble wrap" What value do you assign for R-value?
"I think Ed and his video hit on an important point -- these radiant barriers are primarily…"
7 hours ago
Brett Little posted an event

From Control Layers to High-Performance Enclosures - Free CE Webinar at Webinar Online

May 29, 2019 from 12pm to 1:15pm
High-performance enclosure systems are fundamental to efficient, durable, healthy, sustainable, and…See More
10 hours ago
John S. Rodenhizer replied to John S. Rodenhizer's discussion Using radiant barriers as duct insulation, Aka "Bubble wrap" What value do you assign for R-value?
"Agreed, But this guy fought me all the way. I have completed the rating and the HVAC contractor…"
11 hours ago
Dennis Heidner replied to John S. Rodenhizer's discussion Using radiant barriers as duct insulation, Aka "Bubble wrap" What value do you assign for R-value?
"Links for Build America and Building Science…"
11 hours ago
Dennis Heidner replied to John S. Rodenhizer's discussion Using radiant barriers as duct insulation, Aka "Bubble wrap" What value do you assign for R-value?
"Correct,   but when testing has been done on sealing ducts with wraps... (See the BTO and…"
11 hours ago

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