Martin Newmark
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Best Practice for Retrofit Insulation on Modern Knee Walls in Attics

Started this discussion. Last reply by Mark Freeman Jul 6. 9 Replies

I'm wondering what folks are doing to add air-sealing and insulation to knee walls in modern attics. Methods I think of with questions/concerns are:1. Foam it    a- very expensive2. Batts in cavities…Continue

Tags: fsk, foam, board, bibbs, practices

What were R-value requirements of various code versions?

Started this discussion. Last reply by Martin Newmark Jan 5. 8 Replies

I'm trying to figure out what level of attic, wall, basement wall insulation levels were required by the different code versions over the years. If you know of a table of this type of info I would…Continue

Tags: insulation, code, r-value

 

Martin Newmark's Page

Latest Activity

Mark Freeman replied to Martin Newmark's discussion Best Practice for Retrofit Insulation on Modern Knee Walls in Attics
"I like to use a reflective thermal barrier with a minimum of 1/2" foamboard core. The specialized thermal barrier in 1/2" performs like R-7 due to its mylar caoating, although because its a thermal barrier is not really rated in R-Value. I…"
Jul 6
Eric Kjelshus replied to Martin Newmark's discussion Best Practice for Retrofit Insulation on Modern Knee Walls in Attics
"rolls of reflectixinc.com 5' X100' are easy to get in small holes.    HVAC tecks use this for duct wrap.  If you can get in the hell hole - Knee wall attic -  crawl space - access hole - mylar sheets can be used.…"
Jul 2
Jeff Classen replied to Martin Newmark's discussion Best Practice for Retrofit Insulation on Modern Knee Walls in Attics
"One option I used to use was a net and fill with cellulose, however certain types of netting we have found are not designed to be left exposed and deteriorate over time. In that case housewrap is beneficial to install over the netting to prevent…"
Jul 1
David N. Armington replied to Martin Newmark's discussion Best Practice for Retrofit Insulation on Modern Knee Walls in Attics
"This can be more problematic than it seems.  In Northern climates, thermal loss and active air circulation cause ice dams.  I might recommend an approach that in effect isolates the area inside the thermal envelope, meaning the floor,…"
Jun 29
Martin Newmark replied to Martin Newmark's discussion Best Practice for Retrofit Insulation on Modern Knee Walls in Attics
"Thanks for your replies! I appreciate the reference to the SWS. Haven't seen that before."
Jun 29
Chris Clay replied to Martin Newmark's discussion Best Practice for Retrofit Insulation on Modern Knee Walls in Attics
"See NREL SWS Tool, SWS 4.1004.2 Our favorite way was roll up fiberglass and spray with two part foam but most contractors do whats in the SWS."
Jun 29
Robert Zockoff liked Martin Newmark's discussion Best Practice for Retrofit Insulation on Modern Knee Walls in Attics
Jun 29
Ed Minch replied to Martin Newmark's discussion Best Practice for Retrofit Insulation on Modern Knee Walls in Attics
"There are 3 problems you are trying to solve.  First, that the face of the insulation is not making good contact with the back of the interior drywall, second is that the batts are in danger of falling down over time, and third is the wind…"
Jun 29
Dan Phillips replied to Martin Newmark's discussion Best Practice for Retrofit Insulation on Modern Knee Walls in Attics
"It is important to also remember the key junctures where the top of the kneewall meets the roof, and where the bottom of the kneewall meets the floor/ceiling.  Getting an air barrier installed at those two details isn't always done well.…"
Jun 29
Sean Lintow Sr replied to Martin Newmark's discussion Best Practice for Retrofit Insulation on Modern Knee Walls in Attics
"It gets down to the size of the crawl - I can't recall where I saw it but one contractor cuts a whole through on the gable end which allows for passage of foam boards, etc... Don't forget you have to put an air barrier up for most…"
Jun 29
Martin Newmark posted a discussion

Best Practice for Retrofit Insulation on Modern Knee Walls in Attics

I'm wondering what folks are doing to add air-sealing and insulation to knee walls in modern attics. Methods I think of with questions/concerns are:1. Foam it    a- very expensive2. Batts in cavities with location-approved foam board as continuous insulation    a - getting foam board in attic    b - cost of foam board3. Batts in cavities with FSK faced R-19 insulation as continuous insulation    a - how to attach insulation for longevity w/o crushing it and having reasonable air sealing4. Do…See More
Jun 26
Martin Newmark joined Sean Lintow Sr's group
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Best Practices (Residential)

Best Building, Retrofitting, or even Auditing Practices - what are they, what should change, what needs to find it's way to the dust bin of history?See More
Apr 19
Martin Newmark joined allen p tanner's group
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Energy Auditing Equipment for Sale, Trade or to Purchase

Discuss the pros and cons of the equipment you are interested in prior to purchase. Post equipment you have to sell, trade or wish to purchase.Please post the equipment age, serial numbers, condition, warranties and asking price.See More
Mar 23
Martin Newmark replied to Martin Newmark's discussion What were R-value requirements of various code versions?
"Thanks for your reply Steven."
Jan 5
Steven Lefler replied to Martin Newmark's discussion What were R-value requirements of various code versions?
"Martin, Local building code R-Value building requirement knowledge is a challenge Here is what I know. HUD code homes since 1998 was by split into 3 Zones for the USA see attachment Insulation Manufactures would be your best resource. The R-Value…"
Jan 5
Robert DV replied to Martin Newmark's discussion What were R-value requirements of various code versions?
"Martin, What the code required at a certain time and what the builder did are two separate issues.  Not until recently did you start to see real enforcement of the energy code.  There was no code prior to 1975 and what was used from…"
Dec 22, 2016

Profile Information

Company
3 Birds Insulation
Role in Home Performance Marketplace
Contractor: insulation, Contractor: HVAC, Energy auditor / assessor / analyst, Home Inspector (real-estate transactions)
Professional Certification
ASHI, BPI
Professional Interests
Curbing climate change.
Website URL
http://3birdsinsulation.com

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At 8:37am on November 28, 2016, Diane Chojnowski said…

Hi Martin,

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.

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Diane, HEP Moderator

 
 
 

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