Contents: Issue #72
Energy Efficient Windows
Basics: Terms, Types, Components, Functions, Benefits
- Standards: Performance, Energy, Harmonize, BC Regs
Select: Design, Performance, Specify, Select, Energy Costs
Install: Details, Envelope, Frame, Flash, Case, Certification
- Repair/Replace: Maintain, Repair, Rehab, Historic, Replace
- Issues: Comfort, Glare, Green, Water, Heat Gain, UV, More
- More: Incentives, Suppliers, Shows, Info Sources, More
- Ken’s Top Pick: If you have time to surf only one site
Basics: Terms, Types, Components, Function, Benefits
For Window Types & Components
Window & Door Manufacturers Association online glossary, with
pictures, describes common industry terms used for the many
different window types, styles, and components.
For Installation & Building Envelope Interface
This glossary, with drawings, from the Homeowner Protection Office
explains common terms for windows and installation, as they relate
to the interface with building envelope. (PDF)
Of Types & Components
Natural Resources Canada describes, with drawings, window & door
types, plus components including glazing, spacers, frames &
sashes, hardware, and weatherstripping.
Of Window & Glazing Technologies
Efficient Windows Collaborative shows window types and components
including glazing, frame, operating types, Low-E coatings, gas
fills, spacers, and new emerging technologies.
Issues, Functions & Components
Functions windows perform for dealing with elements, indoor
environment, and as part of building envelope, are detailed here by
the Canadian Institute for Research in Construction.
Of Energy Efficient Windows
Massachusetts University reviews energy features including types,
energy flow & heat transfer, glazing properties & options,
spacers, frames, rules of thumb for selection based on climate, and
energy performance ratings.
Of Efficient Windows
These drawings & graphs of Efficient Windows Collaborative
outline benefits of efficient windows such as comfort, less
condensation, increased light & view, protection from UV fading,
and lower HVAC costs.
US Department of Energy resource site provides tips for maximizing
skylight energy efficiency and performance including design,
selection, installation, and links to more info.
Performance, Energy, Harmonize, BC Regs
Of Canadian Standards & Rating Systems
This overview of window standards and rating systems from
NRCan covers certification testing & standards, Canadian
Energy Rating System, CSA Standard A440, and ERS Rating.
Minimum Product Performance Standards
CMHC describes key points in CSA A440 window standard for
minimum performance levels of air tightness, water
tightness, wind load resistance, ease of operation,
resistance to forced entry, condensation resistance, and
Star Efficiency Standards
Energy Star standards, FAQs, features, climate zones,
labels, criteria, humidity, installation, ratings,
application guide, and a list of dealers & manufacturers
are here at the NRCan site.
& Canada Harmonizing Their Standards
Building Envelope Forum article on US & Canada
Harmonized Standard for Windows, Doors & Skylights
covers current standards, why harmonize, task force roles,
new standards, time frame, possible implications, and links
to more info.
Changes To BC Energy Efficiency Regulations
Homeowner Protection Office bulletin outlines upcoming
changes to BC’s provincial energy efficiency regulations
for thermostats; gas fireplaces, boilers, and furnaces; and
3. Select: Design,
Performance, Specify, Select, Energy
Select & Commission Window Installations
CMHC explains window rating systems, design parameters, how to specify
windows, how to test & commission them, and differences between
rated & actual field performance. (PDF)
To Get The Window Performance You Want
This slide show from the BC Building Envelope Council covers steps for
deciding performance you want; standards; pre-construction,
installation & in-situ testing; post-construction; and project
Factors To Consider When Selecting
Canadian IRC gives performance factors to consider such as light
transmission, thermal, sound, strength, fire, water penetration,
operation, ventilation, security, and durability.
Windows & Glazing
These basic window & glazing concepts, considerations for
specifying appropriate window & glazing systems, and links to more
information, are from the Whole Building Design Guide.
Guide To Selecting Energy Efficient Windows
NRCan covers selection of energy efficient windows including
terminology, function, ratings, high performance, benefits, decisions,
procedures, and sources of more information.
Tool Calculates Energy Use Costs For Windows
This online tool of Efficient Windows Collaborative calculates annual
energy costs for condition, window type, and city. A few Canadian
cities show at the bottom of Select A City box.
Install: Details, Envelope, Frame, Flash, Case, Training
Details Of Rainscreen Wall & Windows
National Home Warranty online Reference Guide of Typical Rainscreen Wall
& Window Details contains construction details for rainscreen wall
components that meet the new 2006 BC Building Code Part 9. (PDF)
With Building Envelope
Continuity of window & wall items, weather protection, thermal
performance, load transfer, joint design, and sealants, are all
explained here by the Canadian Institute for Research in
Windows With Less Studs & Lumber
HGTV Pro article & video describe framing with fewer studs while
keeping structural support of window frame, increasing its performance,
and creating a better shield from cold & heat.
US National Institute of Building Sciences slide show outlines the
window industry's historically poor installation guidelines, and
recommends proper procedures for flashing. (PDF)
Details For Window & Door Flashing
CMHC provides online construction details for flashing windows, doors,
and skylights, as well as a number of others covering a wide range of
building components and systems.
Ways To Case A Window
The six variations of window casing methods in this Fine Homebuilding
article, with pictures, show how alternative moldings can produce
totally different aesthetic effects.
Program For Installers
The Installation Masters certification course, a North American training
& certification program, is for installers of replacement and new
construction windows and exterior glass doors.
Repair, Historic, Replace
& Maintenance Of Windows & Doors
BC Homeowner Protection Office building envelope bulletin describes
steps for inspection and maintenance of windows and doors to ensure
good long-term performance. (PDF)
Vs Replacing Old Windows
Home Energy magazine says upgrading efficiency of existing windows may
be better than replacing them. It compares cost & savings,
infiltration & thermal losses, and lead abatement for both
existing and replacement windows.
Existing Windows & Adding Storms
Natural Resources Canada shows how to improve energy efficiency of
existing windows, repair operable parts, and add one of the many
different types of storm window products.
Old Wood Windows
You will find information and links to resources for repairing old
existing wood windows for energy efficiency, mechanical operation, and
aesthetics, at this US Window Repair site.
Window Repair & Restoration
Historic building information, plus articles on issues &
procedures for repairing & restoring different types of historic
windows and glass are offered here on the Old House Web.
Guide For Windows & Doors
US HUD online Rehab Guide for Windows & Doors covers repair,
replacement, and new technologies for glazing, frames, skylights,
doors & frames, hardware, caulking, weatherstripping; shutters,
awnings, and more.
Building Performance Association outlines its best practices for
checking possible moisture problems in walls and installing
replacement windows that will deflect and drain water. (PDF)
Wood Double Hung Windows
Journal of Light Construction article, with pictures, gives you
step-by-step instructions for replacing, in less than an hour, an old
double-hung window with a new wood insert window.
& Mistakes When Installing Retrofit Windows
Home Energy describes installation of energy efficient retrofit
windows including US code issues, installation procedures, and a wide
range of common mistakes that installers make.
Issues: Comfort, Glare, Green, Water, Heat Gain, UV
Building Science Consulting online slide presentation details the
factors affecting comfort, window placement & selection, glazing
options & selection, and some case studies. (PDF)
On Inside Surfaces Of Windows
Canadian Institute for Research in Construction building digest explains
how temperature, humidity, and wind can cause condensation on the inside
surfaces of windows.
>From Windows & Glazing
This online tutorial on glare from Florida Solar Energy Center describes
types & causes of window glare, plus strategies for exterior window
shading and interior room design & finishing.
& Green Building
Window & Door Manufacturers Association offer this green window info
including beliefs, stewardship, environmental certification &
ratings programs, green features of window and frame types &
materials, and more.
Homeowner Protection Office has past research into water penetration of
windows relating to manufacturing and installation, and to codes,
standards, testing, and certification.
Heat Gain & Selecting Glass For Shading
This slide show from Florida Solar Energy Center details solar heat
gain, spectrally selective glazing, and how to select the right glass to
reduce solar heat gain while admitting adequate daylight illumination. (PDF)
Transmittance & Fading Of Furniture
Florida Solar Energy Center describes the basics of UV transmittance and
fading, causes, ultraviolet radiation, and a damage-weighting formula to
quantify effects of fading.
Isolation Provided By Windows
A summary of research on noise isolation provided by various types of
windows, and sound transmission classification (STC) ratings for each,
are provided here by CMHC.
May Cast Bluish Tinge On Walls
Building Science Consulting clarifies that not all low-e glass is equal
in colour filtering. Some low-e filters out portions of red and/or blue
light, creating a colour distortion that may cast a bluish tinge on
Incentives, Suppliers, Shows, Info Sources, More
Government PST Exemptions
The BC government allows a PST exemption for prescribed materials &
equipment that prevent heat loss from a building, including Energy Star
qualified windows, doors, and skylights. (PDF)
Home Retrofit Grants
Natural Resources Canada, through its ecoENERGY Retrofit program, provides
grants for replacement of windows, doors, and skylights, in both single
family and multi family homes.
Window & Door Manufacturers & Industry Members
Window & Door Manufacturers Association of BC lists, with contact
information and links to their Web sites, members who manufacturer and/or
supply window products & services.
Of Energy Star Windows
Energy Star, a labelling program for energy efficient products, allows
online search, by country and province or state, for North American
manufacturers of Energy Star windows.
Canadian Trade Show
The Canadian Window & Door Manufacturers Association presents Win-door
North America, the annual trade show and educational forum for the
fenestration and door industry.
US Trade Show
GlassBuild America trade show serves industry sectors that supply completed
window & door products & systems, components, machinery &
equipment, services, tools & supplies, and glass.
Industry Magazine & Articles
Window and Door, an industry magazine, offers access to its archive of past
articles on industry news, the market, business management, products,
installation, technologies, and more.
On Window Technologies & Energy
The purchasable book “Residential Windows: Guide to New Technologies &
Energy Performance” describes in detail how windows & glazings work,
new technology, product selection, and energy performance.
On Energy Efficient Windows
Efficient Windows Collaborative offers past issues of “Word on Windows”,
their newsletter with updates on energy efficient window products,
standards, issues, and industry news.
Site On Windows & Fenestration
Florida Solar Energy Center has very good information and slide shows on how
energy efficient windows work, window market, and solar lighting, plus links
to more resources & info.
Your Clients Of Efficient Windows & Benefits
Home Energy Magazine suggests how the building industry can inform their
clients about energy efficient window benefits, explain key window features,
and offer tips for selection.
Guide For Buildings
CMHC guide for architects describes benefits of daylighting, challenges,
principles of good design, how to perform basic calculations, and Web tools
for daylighting design. (PDF)
Tools For Windows & Daylighting
US Lawrence Berkeley Laboratories lists a wide range of software tools that
are available for design and performance simulation of windows and
daylighting systems & products.
Ken’s Top Pick: Efficient Windows Collaborative Site
Windows Collaborative Site
Collaborative has a lot of very good info including what's new,
resources, information, links, publications, FAQ, window selection tool,
overview of window technologies, benefits, and much more.