Why R-Values Matter in Energy Efficiency | Mechanical Systems | HGTV

--------------------

· f
· t
· p
· g
· i

· Newsletters
· Magazine

· Subscribe Now
· This Month's Issue

· Products
· Watch Live
· Sweepstakes

· Log In
· Register
· · Profile
· Settings
· Log Out

· Shows

· Main
· Program Guide
· All Shows

· Beachfront Bargain Hunt
· Fixer Upper
· Flip or Flop
· Good Bones
· House Hunters
· Love It or List It
· Property Brothers
· Brother Vs. Brother
· Rehab Addict
· All Shows

· All Hosts

· Nicole Curtis
· Chip Gaines
· Joanna Gaines
· Drew Scott
· Jonathan Scott
· All Hosts

· Full Episodes
· Watch Live
· Be On HGTV
· I Heart HGTV Blog

· Photo Library

· Main
· All Rooms
· Kitchens
· Bathrooms
· Bedrooms
· Living Spaces
· Outdoor Spaces
· Storage and Utility
· Other Spaces

· Design & Decorate

· Main
· Rooms

· Kitchens
· Living and Dining Rooms
· Bedrooms
· Kids Rooms
· Bathrooms
· Other Rooms

· Interior Ideas

· Design 101
· Furniture and Accessories
· Color
· Window Treatments
· Clean and Organize
· Smart Chic: Bathrooms
· Bathroom Design Guide

· Outdoor Design

· Landscaping & Hardscaping
· Outdoor Spaces

· Make & Celebrate

· Handmade
· Holidays
· Entertaining

· Fall Trends
· I Heart HGTV Blog

· Home Giveaways

· HGTV Urban Oasis

· HGTV Urban Oasis 2016
· Enter the Sweepstakes
· Behind the Design
· My Urban Life Sweepstakes
· Past HGTV Urban Oasis

· HGTV Dream Home

· HGTV Dream Home 2016
· Behind the Design
· Past HGTV Dream Homes

· HGTV Smart Home

· HGTV Smart Home 2016
·


Source: www.hgtv.com/remodel/mechanical-systems/why-r-values-matter-in-energy-efficiency


how is r value related to energy efficiency


R-value (insulation) - Wikipedia

--------------------

** R-value (insulation) **

From Wikipedia, the free encyclopedia
Jump to: navigation, search


*This article has multiple issues.* Please help *improve it* or discuss
these issues on the *talk page*. /(Learn how and when to remove these
template messages)/


This article *may be too technical for most readers to understand*. Please
help improve this article to make it understandable to non-experts, without
removing the technical details. The talk page may contain suggestions.
/(February 2014)/ /(Learn how and when to remove this template message)/


This article *needs additional citations for verification*. Please help
improve this article by adding citations to reliable sources. Unsourced
material may be challenged and removed. /(August 2013)/ /(Learn how and
when to remove this template message)/

/(Learn how and when to remove this template message)/

Aerogel is an extremely efficient synthetic insulator and has a very high
R-value.

The *R-value* is a measure of thermal resistance^[1] for materials and
assemblies of materials (such as insulation panels, floors, and walls) in
the building and construction industry. It gives an indication of how
quickly they will lose heat (their thermal resistance). The higher the
value of R, the better the thermal performance and heat retention of the
material or assembly, and the slower any heat loss. The R-value for a given
material or assembly depends on its resistance to heat conduction, as well
as the thickness and (for loose or porous material) any heat losses due to
convection and radiative heat transfer. However it does not account for the
radiative or convective properties of the material's surface, which may be
an important factor for some applications. R varies with temperature but in
construction it is common to treat it as being constant for a given
material (or assembly). It is closely related to


Source: en.wikipedia.org/wiki/R-value_(insulation)

© 2005-2018 HaveYourSay.org