Green Homes News

I am in the process of remodeling my home, and have a chemical sensitivity to VOC's. I have reacted very negatively to offgassing from both new fiberglass and vinyl windows…

Here's what I'm including in my article on HVAC sizing.  I'm submitting it here for peer-review.  Thoughts?-------------------Confusingly, equipment shows both a "rated" BTU capacity as well as a "maximum" capacity. …

I just got an EV, and switched to an ultra low overnight rate plan. The cost of getting this ultralow overnight rate ($0.068CAD/kWh, delivery, taxes, regulatory charges included) is an…

Hey All,New construction build in CZ 6. The basement is half finished basement (conditioned and airsealed) and half drive under garage (unheated and airsealed). Currently, we have a 4' x 5'…

I have to replace my furnace and AC soon since they are way past there lifetime.I have a lot of sun where I live butin the winter it gets cold…

We are about to do floors on our new Maine home: climate zone 6; sloped lot,  super-insulated (including concrete basement walls), concrete-free basement slab.  My contractor is concerned with my…

The flexibility of nailbase panels makes them useful when retrofitting existing walls for better energy efficiency

Hello,In Zone 3 (Seattle) and working on a home addition to a mid-century modern residence (1955).  The current roof assembly is T&G car decking, 4x rafters with sheathing and TPO. …

howdy, my new door arrived and the threshold is all aluminum that has more surface contact than a regular threshold. just a generic 'euro style' door with aluminum frame, 3…

I cant seem to find the smoke test video that showed no chimney effect in the tested roof section, but Im wondering if ridge-vent is really necessary for my 3:12…

Bir BT kursuna zaman ayırmadan önce kalitesini ve kullanışlılığını nasıl değerlendirebilirim? Bu değerlendirmede program, geri bildirim ve derecelendirme gibi hangi hususlar önemlidir?

Building a new construction in zone 6, rectangular home approximately 34x50 with R30 walls and a .50 ACH goal.  With that in mind, I'm trying to decide how much blown…

Hi,I've found a lot of different advise about insulating CMU basement walls and Stucco over CMU on slab but I'm not finding anything about what would be best for a…

To avoid oversized equipment, first understand key concepts like cooling load vs. capacity, latent vs. sensible heat, and design vs. part load

Hi all,I am embarking on another build in the next 12 months. This site and others like it have been extremely useful in understanding more about building science. While I'm…

Let's say a zone calls for 30k. Looking at the last two columns in the attachment, what is the benefit of the 30 over going with the 36? I am…

Hi All,I am a contractor in St. Louis, MO, where we have a large stock of 100 year old brick homes.  We are very interested in improving the efficiency of…

Hello,First of all, I really appreciate this website and all the knowledge that you share!My name is Iva and we have a 1961 MCM house located in 4c climate zone…

Hello,I am looking for advice on forming up my grade beams for my 1000 square ft. rectangle of a house.  Its for a concrete free slab/ sand box and the…

In addition to water and vapor control, many of today's membrane products make excellent primary air barriers