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2 Answers

Insulate existing garage walls?

I have a house in Houston with drywall already installed on all 4 walls of a 2-car 22'*25' garage. Two walls are shared with conditioned space and insulated. One SW facing wall has no insulation, and the NW facing wall is 90% insulated garage door, the remainder uninsulated.

The uninsulated SW wall (afternoon Texas sun) actually protrudes into the conditioned house, so only about 15' are uninsulated. The garage ceiling is not currently insulated.

My goal is to make the garage a little cooler in the summer and a little warmer in the winter. I do not plan to add HVAC.

In Energy efficiency and durability | Asked By Mark McFarlane | Oct 24 16
3 Answers

Cathedral ceiling insulation

A quick clarification needed to settle my mind, I am hoping I solved my condensation problem. I am redoing my leaking cathedral ceiling which had R30 Roxul, no vents and tongue and groove pine. I am in northern VT and as you can imagine I was getting condensation on the underside of my roof deck.

In General questions | Asked By John Hunt | Oct 24 16
2 Answers

EarthPaint Products

Is there a reason that none of the various products sold by EarthPaint are not consider "green" by Green Building Advisor?

A review of their materials: no petroleum products, low- or no-VOCs, etc.

What am I missing? Thanks.

In Green products and materials | Asked By Andy Kerr | Oct 23 16
4 Answers

Best practice for stone siding over stick built walls

We are planning to apply 4 inch thick rubble stone siding over the lower level of our daylight basement home. We had originally planned for ICF at the lower level walls, partly to mitigate rain water and inward vapor drive risk brought on from the stone (which is south facing). As it turns out the ICF represents a substantial cost increase and we are considering alternative wall options (stick-built) for the above grade portion of the lower level wall.

In Energy efficiency and durability | Asked By Sean Hembree | Oct 22 16
3 Answers

How much insulation for a steel beam?

How much insulation do I need over a steel beam to stay above the dew point inside the house?

This is new construction in progress, in NC. The I beam is over a door and window assembly and contained within the wall, sandwiched between the sheathing and drywall. However, no consideration was given to insulating it in the design.

In General questions | Asked By Jeremy Turner | Oct 22 16
2 Answers

Domestic hot water power demand is no longer an issue?

Traditionally, heating and cooling requirements have been the largest energy draw in homes. The ability to relegate heating and cooling to 2nd or even 3rd place in a home energy draw hierarchy is now possible with better building techniques, such as PH. It has been generally agreed that the new king of the draw is DHW. However, I wonder if that is still the case now that HPHW systems have hit the market. I live in a heating dominated climate. The maximum heating demand allowed per PHI is 4.75 KBtu/SF or 5.2 KBtu/SF per PHIUS+ for my climate zone.

In Energy efficiency and durability | Asked By Jonathan Lawrence CZ 4A New Jersey | Oct 22 16
0 Answers

water furnace 7 series desuperheater

So i am in the process of having installed 3 water furnace 7 series with desuperheaters. Trying to figure out hot water options. Main side of the house, Im thinking a marathon storage tank heated from the desuperheater. This would feed a 80 gallon heat pump water heater.

In General questions | Asked By dean sandbo | Oct 23 16
2 Answers

Siding with a step

I have an addition that I have added to my home and am now in the process of finishing up the furring for the rain screen and getting ready to install siding.

The issue I've run into is that I am using vinyl siding to match the original house, but the addition has a basement and the main portion is slab on grade. Because of this, the addition has a rim board that extends roughly 12" below the original slab/sill plate line.

When I go to install vinyl siding the starter strip on the old portion will not line up with the addition.

In General questions | Asked By Mike M | Oct 22 16
5 Answers

Reducing wintertime ventilation

I have an Ultra Aire ventilator and dehumidifier (80 cfm) and a Panasonic ERV (20 cfm) that deliver outdoor air into my 3,200 square foot home. The Ultra Aire is installed in the basement and dumps air into a space near the central air handler. The Panasonic is on the second floor.

During the cooling season, I can easily maintain indoor humidity between 40% and 50%. During the winter, levels typically are in the mid 20% to 30% range.

In Mechanicals | Asked By Steve Knapp | Oct 22 16
12 Answers

Air to water heating: flat plate with water storage or long copper pipe in water storage?

in an effort to make our house more comfortable, and to eliminate the drift of air we currently are in the opportune to raise the living room floor with a sub-floor and by doing so, include in-floor radiant heat.

plan is to:

raise living room floor (440 SF) by about 14 inches, with standard plywood and 2x12 timber.

on top, install R10 EPS insulation with 5/8 PEX/O2 barrier 6 inches on center, encased in 2.5 inches of sand/cement and 15 mm laminate flooring

In Green building techniques | Asked By Kevin Kersten | Oct 22 16
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