Luis Hernandez
  • Rhinebeck, NY
  • United States
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Luis Hernandez's Discussions

Non-continuous exterior insulation
11 Replies

Greetings everyone,     I have been asked to put 4 inches of closed cell rigid insulation in the first floor of a cottage, but not the second floor, including tape and vapor barrier... I thought that…Continue

Started this discussion. Last reply by Don Hynek Mar 1.

Solar Heat Air
11 Replies

Does anyone has and quantifiable data for a solar heat air system?  It seems the state of Minnesota has been investing into this technology but I have not yet found any good data I could use…Continue

Tags: heat, solar, heating, Passive

Started this discussion. Last reply by Bradley Wiesneth Jul 17, 2014.

Concrete floor insulation details
2 Replies

Greetings everyone!    I was hoping I could get some feedback with a building I am working on. The existing concrete was a 3 inch "homeowner special", so the plan is to set 2 inches of rigid foam,…Continue

Tags: radiant, heat, installation, board, foam

Started this discussion. Last reply by Hal Skinner Jun 24, 2014.

Air Source Heat pump or mini-split efficiency
1 Reply

Greetings everyone!    I have a technical questions I hope I could get some feedback! I understood that air source heat pumps are very efficient because of their ductless configuration. I have been…Continue

Tags: efficiency, duct, ductless, minisplits, pump

Started this discussion. Last reply by George J. Nesbitt Apr 30, 2014.

 

Luis Hernandez's Page

Latest Activity

Don Hynek replied to Luis Hernandez's discussion Non-continuous exterior insulation
"This is a matter of far more than R-values. Average exterior temp, heating load vs. cooling load, interior and exterior RH (moisture drive) ALL enter into the picture. At 6,000 HDD, where Luis is, yours would be a VERY high-risk wall assembly - lots…"
Mar 1
Patrick Michaelyan replied to Luis Hernandez's discussion Non-continuous exterior insulation
"Don, I'd like to ask you specifically about your comments on putting the structure at great risk when the exterior R-value is low relative to cavity R-value. I tore out the plaster and lath in my old house a couple of years ago. I then…"
Mar 1
tedkidd replied to Luis Hernandez's discussion Non-continuous exterior insulation
"You have been asked to do a thing. Are you being held accountable for some type of energy or comfort result? Have they shared their objectives? Are they asking you to build the specifications? What is your role here?  It's not clear that…"
Jan 12
Luis Hernandez's discussion was featured

Non-continuous exterior insulation

Greetings everyone,     I have been asked to put 4 inches of closed cell rigid insulation in the first floor of a cottage, but not the second floor, including tape and vapor barrier... I thought that insulation in order to be effective, needs to be continuous... any thoughts? Suggestions?Thank you for your help and Happy Holidays!     Luis See More
Jan 6
Don Hynek replied to Luis Hernandez's discussion Non continuous exterior insulation
"I agree with Sean, as far as he goes... This building wants ALL the exterior wall that sees full exterior temperature to be fully insulated. This looks to me as though the gable walls are fully conditioned all the way to the peak on the inside, and…"
Dec 29, 2014
Sean Lintow Sr replied to Luis Hernandez's discussion Non continuous exterior insulation
"Got it, especially when I now tie in what the title says - with that what is the clients main goal - that tells you what you need to address to solve their problem. Yes you have to ask & not just assume. As for adding just foam board to the…"
Dec 29, 2014
Hal Skinner replied to Luis Hernandez's discussion Non continuous exterior insulation
"This RCC is also used as an exterior p[aint.  Here is a statement and a few pix of his large 2-story wood home we did in 2003.   "
Dec 28, 2014
Hal Skinner replied to Luis Hernandez's discussion Non continuous exterior insulation
"Hi Luis, I was picturing what you were describing as a 2 family apartment building so to speak.  A duplex of sorts. I am assuming your customers are feelimg how cold the 1sr floor walls are when they are down there.  It has been…"
Dec 28, 2014
Luis Hernandez replied to Luis Hernandez's discussion Non continuous exterior insulation
"I am talking about exterior walls only from the outside. The ceiling will not be done since this is an existing home, so the cathedral ceiling is already insulated, and wood over it....  the exterior insulation would be done from the outside…"
Dec 28, 2014
Sean Lintow Sr replied to Luis Hernandez's discussion Non continuous exterior insulation
"Let me see if I have this straight, you are not talking about floors but rather walls? Based on the diagram I see and you saying the crawl space has been completed, the walls including the gable ends need to be sprayed along with the…"
Dec 28, 2014
Luis Hernandez replied to Luis Hernandez's discussion Non continuous exterior insulation
"Hal,     Thank you so much for your reply.... I missed some important part of my question... sorry... This has an unusual layout... North side of home is cathedral ceiling, and the South side has a bedroom but the room is open…"
Dec 28, 2014
Hal Skinner replied to Luis Hernandez's discussion Non continuous exterior insulation
"Hi Louis, I believe you are referring to creating a 'Building envelope' of insulation.  By adding insulation to the exterior walls of the first floor, but not to the ceiling, you have not created the 'envelope'.  Less…"
Dec 28, 2014
Luis Hernandez posted a discussion

Non continuous exterior insulation

Greetings everyone,     I have been asked to put 4 inches of closed cell rigid insulation in the first floor of a cottage, but not the second floor, including tape and vapor barrier... I thought that insulation in order to be effective, needs to be continuous... any thoughts? Suggestions?Thank you for your help and Happy Holidays!     Luis See More
Dec 28, 2014
tedkidd replied to Luis Hernandez's discussion Distribution Efficiency and heating safety factor in TREAT in the group TREAT Software
"It is very common to find equipment grossly oversized. I mean 1.5 - 2x Manual J and 2-3x the size the house needs.  It's our experience that TREAT load calc is very close to Manual J - which tends to oversize equipment by 15-40% depending…"
Oct 30, 2014
tedkidd replied to Luis Hernandez's discussion Basic Heat loss information in the group TREAT Software
"Luis,  Click "selected reports, energy savings and use, design heating and cooling loads" then pick the improved package you want a load for.  It's our experience that TREAT load calc is very close to Manual J - which tends…"
Oct 30, 2014
John Watson Ley replied to Luis Hernandez's discussion Distribution Efficiency and heating safety factor in TREAT in the group TREAT Software
"Luis, Good Evening, John of NY Construction Pros here. I don't think you need to worry about this warning from TREAT too much.  All it means (as I understand it) is that the primary heating appliance is too large in its Btu capacity for…"
Oct 29, 2014

Profile Information

Company
Gaia Sharbel Energy Contracting
Professional Certification
BPI AP, BPI EP, cSBA, IEEE
Professional Interests
Solar passive, sustainable, renewable energy solutions, Energy Star, Energy Audits
Website URL
http://www.loweryourenergynow.com
LinkedIn Profile
www.linkedin.com/pub/luis-hernandez/6/859/9b0/

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At 3:21pm on August 15, 2013, Diane Chojnowski said…

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