Maro Publications

Building Insulation

Notes

*7/5/2013 
from 7/5/2013

Maro Encyclopedia

Comments

Patent Abstracts

Patent Titles

Building Materials

Sound

Thermal Insulation

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Notes

“Building insulation refers broadly to any object in a building used as insulation for any purpose.  While the majority of insulation in buildings is for thermal purposes, the term also applies to acoustic insulation, fire insulation, and impact insulation (e.g. for vibrations caused by industrial applications).  Often an insulation material will be chosen for its ability to perform several of these functions at once.

Thermal insulation in buildings is an important factor to achieving thermal comfort for its occupants.  Insulation reduces unwanted heat loss or gain and can decrease the energy demands of heating and cooling systems. It does not necessarily deal with issues of adequate ventilation and may or may not affect the level of sound insulation.  In a narrow sense insulation can just refer to the insulation materials employed to slow heat loss, such as: cellulose, glass wool, rock wool, polystyrene, urethane foam, vermiculite, perlite, wood fibre, plant fibre (cannabis, flax, cotton, cork, etc.), plant straw, animal fibre (sheep's wool), cement, and earth or soil, but it can also involve a range of designs and techniques to address the main modes of heat transfer - conduction, radiation and convection materials.

The effectiveness of insulation is commonly evaluated by its R-value.  For attics, it is recommended that it should be at least R-38 (12-15 inches).  However, an R-value does not take into account the quality of construction or local environmental factors for each building. Construction quality issues include inadequate vapor barriers, and problems with draft-proofing. In addition, the properties and density of the insulation material itself is critical.”

(Building Insulation, Wikipedia, 7/5/2013)

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(RDC 6/5/2012)

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Roger D. Corneliussen
Editor
www.maropolymeronline.com

Maro Polymer Links
Tel: 610 363 9920
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E-Mail: cornelrd@bee.net  

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Copyright 2013 by Roger D. Corneliussen.
No part of this transmission is to be duplicated in any manner or forwarded by electronic mail without the express written permission of Roger D. Corneliussen
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* Date of latest addition; date of first entry is 7/5/2013.