John Porterfield's Page

I have questions about roof cavity insulation, have input from local experts, though welcome hearing from those who are practicing in cold climate and hopefully near/at the cutting edge of Wx knowledge and  building science.I am specifying flat roof insulation for projects that include 1) roof cavity (separate rafters and ceiling joists, "roof crawl space") and, 2) rafters with deck and ceiling finish attached top and bottom.  Building with roof cavity has solid brick walls with retrofitted…See More

Share your experience with different training and mentoring methods. Learn about new training tools, certifications and training programs.See More

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

My firm provides post-installation inspections and owners representative services - independent guidance during installation similar to independent construction manager.  In these (of many) roles we are continually confronted by less than specified or agreed installation quality.  Difficulties inherent with work in existing construction is a constant reality that installers face.  We want to help installers get closer to effective installation WITH best practices and help owners and EE programs…See More

My firm provides post-installation inspections and owners representative services - independent guidance during installation similar to independent construction manager.  In these (of many) roles we are continually confronted by less than specified or agreed installation quality.  Difficulties inherent with work in existing construction is a constant reality that installers face.  We want to help installers get closer to effective installation WITH best practices and help owners and EE programs…See More

Linda Wigington distinguished between deep retrofits & deep energy reductions, thus expanding the range of strategies & tactics from which we might propose when engaging with people, the ones who choose.See More

Work collaboratively to find easier, more accurate and better ways to model, predict and verify a home's energy consumption.

Now that my wife and I are involved in BPI training and plan to conduct field test at our residence, the work scope for integrated HVAC has become more involved.   We'd like to use our efficient tankless boiler AND have old style equipment remain functional for use as a BPI field test site.We're looking for an HVAC installer who has thoroughly mastered combined heating w/ air/water option.I have also posted at Heating Help dot com > search Therm_lag (me) and scroll to Integrated…See More

HVAC design, Manuals J, S, T, & D, Duct leakage, Air flow, ENERGY STAR new home requirements, and more. Since heating & cooling are such a big part of home energy use, understanding HVAC is critical.See More

For too long there has been relatively little EE focus on multifamily, but some new programs have recently started. This group gives us a venue to share our experiences on cost effective audit & retrofit strategies and analysis tool needs.See More

Sharing ideas, tools and examples of promoting energy efficiency to consumersSee More