Tag: U-factor

A modern office building surrounded by greenery, featuring a park-like setting with benches and a curved pathway under a cloudy sky.

The envelope challenge: Meeting Massachusetts’ Stretch Code

September 1, 2025

It has become challenging to design and effectively specify vertical above-grade building envelopes to ensure the building is stretch code-compliant. This article illustrates how to manage those challenges.

By Helen Sanders, PhD, and Fred Worm

Condensation: Why fenestration component selection matters

June 8, 2023

In 2022, the authors collaborated with researchers at the University of Massachusetts, Ajla Aksamija, PhD, and Suncica Milosevic, to quantify the potential for condensation on a variety of window systems. Eleven different aluminum architectural window systems spanning a wide range of heat transfer coefficients (U-factors) and CR ratings were investigated. The research results and implications for fenestration specification are summarized herein.

Rewriting the rules on cold-formed steel

March 21, 2018

The American Iron and Steel Institute (AISI) has released findings from research conducted to support the development of a calculation methodology for determining the U-factors and R-values for wall assemblies containing cold-formed steel.

Clearing the air over low-VOC coatings

November 1, 2012

With growing emphasis on environmental regulatory compliance, specifiers are discovering less is more when it comes to meeting requirements on volatile organic compounds (VOCs). Over the past decade, VOC content in waterborne and high-solids coatings has dramatically decreased while performance and durability of the solvent-based coatings they replace has remained.

Privacy Overview

This website uses cookies to improve your experience while you navigate through the website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may affect your browsing experience.

Necessary

Always Enabled

Necessary cookies are absolutely essential for the website to function properly. These cookies ensure basic functionalities and security features of the website, anonymously.

Cookie	Duration	Description
cookielawinfo-checkbox-analytics	11 months	This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Analytics".
cookielawinfo-checkbox-functional	11 months	The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional".
cookielawinfo-checkbox-necessary	11 months	This cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Necessary".
cookielawinfo-checkbox-others	11 months	This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other.
cookielawinfo-checkbox-performance	11 months	This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Performance".
JSESSIONID	session	The JSESSIONID cookie is used by New Relic to store a session identifier so that New Relic can monitor session counts for an application.
viewed_cookie_policy	11 months	The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. It does not store any personal data.

Functional

Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features.

Cookie	Duration	Description
__cf_bm	30 minutes	This cookie, set by Cloudflare, is used to support Cloudflare Bot Management.

Performance

Analytics

Analytical cookies are used to understand how visitors interact with the website. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc.

Cookie	Duration	Description
_ga	2 years	The _ga cookie, installed by Google Analytics, calculates visitor, session and campaign data and also keeps track of site usage for the site's analytics report. The cookie stores information anonymously and assigns a randomly generated number to recognize unique visitors.
_gat	1 minute	This cookie is installed by Google Universal Analytics to restrain request rate and thus limit the collection of data on high traffic sites.
_gat_UA-	1 minute	A variation of the _gat cookie set by Google Analytics and Google Tag Manager to allow website owners to track visitor behaviour and measure site performance. The pattern element in the name contains the unique identity number of the account or website it relates to.
_gid	1 day	Installed by Google Analytics, _gid cookie stores information on how visitors use a website, while also creating an analytics report of the website's performance. Some of the data that are collected include the number of visitors, their source, and the pages they visit anonymously.
CONSENT	2 years	YouTube sets this cookie via embedded youtube-videos and registers anonymous statistical data.

Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. These cookies track visitors across websites and collect information to provide customized ads.

Cookie	Duration	Description
ADV_u_id	3 months 8 days	Unique customer identifier used to track unique ad views and interactions with some ads.
loc	never	AddThis sets this geolocation cookie to help understand the location of users who share the information.
OAGEO	session	OpenX sets this cookie to avoid the repeated display of the same ad.
OAID	1 year	Cookie set to record whether the user has opted out of the collection of information by the AdsWizz Service Cookies.
VISITOR_INFO1_LIVE	5 months 27 days	A cookie set by YouTube to measure bandwidth that determines whether the user gets the new or old player interface.
YSC	session	YSC cookie is set by Youtube and is used to track the views of embedded videos on Youtube pages.

Others

Tag: U-factor

The envelope challenge: Meeting Massachusetts’ Stretch Code

Condensation: Why fenestration component selection matters

Rewriting the rules on cold-formed steel

Clearing the air over low-VOC coatings

Popular Articles

Read the Latest Issue

Tag: U-factor

The envelope challenge: Meeting Massachusetts’ Stretch Code

Condensation: Why fenestration component selection matters

Rewriting the rules on cold-formed steel

Clearing the air over low-VOC coatings

Sign up for our weekly newsletter

Popular Articles

Read the Latest Issue