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Insulating Old Brick Buildings - GreenBuildingAdvisor
Load-bearing brick walls are tricky to insulate. Here’s why: if you insulate the wall on the interior, you’ll make the bricks colder during the winter. As we know from the psychrometric chart, cold bricks are always wetter than warm bricks. Once the wall is insulated, the escaping heat that formerly passed through the bricks is no longer available to drive out the moisture. So your wet bricks stay wet for a long time. In some cases, repeated cycles of freezing and thawing can permanently damage the bricks, causing them to fall apart.
Brick  wall  insulation  renovate 
13 days ago by ilublo
BSI-105: Avoiding Mass Failures | Building Science Corporation
The mass walls to be retrofitted could include both multi-wythe solid brick walls, and exterior brick with a hollow clay block infill/backup wall.  The interior of mass walls may be finished with plaster, often gypsum or lime-cement based, and sometimes installed over furring strips and/or lath. In some cases, a layer of bitumen is applied between the interior finish and the masonry. It is necessary to remove any existing interior furring, lath and plaster to expose the brick structure from the interior for retrofit since they could be moisture sensitive (like gypsum), or form a void that can create unintentional air leakage (such as furring and lath).  Photograph 1, Photograph 2, Photograph 3 and Photograph 4 show conditions after removal/demolition of the interior furring, lath, and plaster.  No one said this was going to be easy.
Brick  walls  Insulation 
13 days ago by ilublo
How to Cool Your Attic During the Summer
The temperature of your attic can greatly influence the temperature of the rest of your home. Keep it cool with these tips!
attic  roofing-ventilation  insulation 
14 days ago by Adventure_Web
High Performance Thermal Insulation - Thermablok Aerogel
Thermablok Aerogel is a flexible, nanoporous aerogel blanket insulation that reduces energy loss whilst conserving interior space in residential and commercial…
materials  science  building  heating  engineering  aerogel  thermal  insulation 
26 days ago by asaltydog
JIOS Aerogel
JIOS AeroVa®, the finest grade silica aerogel powder available, produced with revolutionary efficiency by an in-house patented process delivering the lowest cost worldwide.
materials  science  building  heating  engineering  aerogel  thermal  insulation  hydrophobic  powder 
26 days ago by asaltydog
Dry Ice Safety: Ventilation and Insulation
Dry ice needs ventilation and insulation at the same time. How can this be?
dry-ice  ventilation  insulation 
5 weeks ago by Adventure_Web
How to Insulate Ductwork | This Old House
This Old House plumbing and heating expert Richard Trethewey helps a homeowner insulate his ductwork
homeimprovement  insulation 
6 weeks ago by jccalhoun
A radiative cooling structural material | Science
using boiling hydrogen peroxide, these researchers reduced/compressed wood by removing the lignin, making an engineered wood with interesting properties, such as high strength. The kicker is that the white material is also a narrowband IR emitter tuned to dump heat to space through the atmospheric windows, so it can cool you in broad daylight.
engineered  wood  lignin  removal  narrowband  IR  emitter  atmospheric  window  insulation  cooling  subambient 
7 weeks ago by asteroza
Stronger than aluminum, a heavily altered wood cools passively | Ars Technica
The researchers estimate that covering an apartment building with the treated wood could save about 35 percent of the energy used for cooling. In a dense urban setting, that number goes up to over half. Plus, it also has the strength to handle some of the internal structure of the building. And while forestry can create environmental issues, it is certainly possible to manage it in a way that is sustainable.

All of which makes the wood—the researchers refer to it as "cooling wood"—a very promising looking material. So it's no surprise to see that three of the team members behind the new paper have a patent out to commercialize the tech.
architecture  insulation  energy  wood 
7 weeks ago by euler

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