Overview
‘Arctic’ Windows are not technically a style of
window, but more a categorization of product design and analysis,
dedicated to meeting requirements for superior thermal characteristics
for the building’s fenestration.
Our designs are custom-engineered and analyzed to enhance the
insulating values and condensation resistance of the products.
Heat-loss, normally measured by U-value and its reciprocal
R-factor, is primarily determined by the glazing chosen. Insulating
glass options include low-emissivity coatings (varying performance
characteristics) and gas filling with argon or krypton.
The insulating characteristics of the members (perimeter framing
and mullions) plus the glazing spacers are the primary determinants
of a window or curtain wall’s condensation resistance.
In certain environments (e.g. a hospital with high interior
humidity in a cold climate), it is critical to minimize condensation,
in order to mitigate growth of mould and other pathogens.
Condensation resistance is a measurement of energy transfer
from the exterior to the interior of a building. By super-insulating
window and curtain wall members, combined with appropriately
high-performing glazing, ‘Arctic’ designs raise
interior surface temperatures. This minimizes or eliminates
condensation. Relative humidity and ambient temperatures are
key factors in determining the likelihood of condensation.
In all cases, architects must consider additional means of
avoiding condensation, including humidity control, increased
air-flow around the windows or curtain wall, etc.
Within the ‘Arctic’ design philosophy is a subtle
interplay between U-values of glazing and condensation resistance.
The relationship is minimal at the center of the glass, but
is can be significant at glass perimeters, and more pronounced
again when mullion spacing and glass lites are small.
Computer-aided design is integral to the quality of an ‘Arctic’ system.
We use advanced thermal simulation techniques, often combined
with project-specific physical testing, to ensure that the
client’s needs for a healthy and energy-efficient building
are met.
