Four Seasons' CONSERVAGLASS™ was designed specifically for the extreme
demands of a room built entirely of glass utizing the most advanced glazing
technology available. CONSERVAGLASS™ makes Four Seasons room additions cooler
in summer and warmer in winter, and its advanced construction techniques promise a
lifetime of outstanding performance.

CONSERVAGLASS™ excels in all the categories important to you, including energy
efficiency, safety and strength, and longevity.
Energy Efficiency
Four Seasons Has the Highest R-Value in the Industry

R-Value measures how easily heat travels through a material, or its thermal
Resistance. The higher the R-Value, the greater the insulating effectiveness, the
lower your energy costs and the greater your comfort. For maximum comfort, a
4.0 R-Value is recommended. CONSERVAGLASS' R-Value is 100% higher than
our competition's standard double-glazed glass, keeping your room warmer in
Unsurpassed Visibility with Lower Reflectivity
Light Transmission/Glare

The percentage of visible light transmitted through the glass. High numbers here indicate a room
that will be uncomfortably bright inside. You don't want to have to squint or wear sunglasses inside
your new room. A visible light transmittance below 60 is recommended for glare-free natural
lighting. With a Visible Light Transmission of only 56, Four Seasons CONSERVAGLASS™ offers the
perfect balance between visibility and glare reduction. No squinting or sunglasses needed.
Our Glass Performance...

Your Sunroom Glass' Performance is the Foundation of Your Sunroom Satisfaction

Our Patented Glazing Keeps Four Seasons Sunrooms Warmer in Winter and Cooler in Summer
of the Sun's Solar Heat!

Relative Heat Gain measures the heat gained through a glazing. This number is more important in a
glass room than the R-Value, particularly in summer and in warm, sunny climates. High Relative
Heat Gain values indicate a room that will be unbearably hot or expensive to keep cool.
CONSERVAGLASS™ Roof Glass' Relative Heat Gain of only 39 ensures your room can be effectively
cooled in all seasons.
The real story behind CONSERVAGLASS™ and what makes it so special is its exclusive, patented,
multi-coating. This extraordinary process uses multiple microscopic coatings of exotic metals and
compounds to let beneficial natural light into the roof, while keeping out the oppressive summer
heat and damaging UV rays. This remarkable glass also reflects interior heated air back into the
room, keeping you warmer in winter as well - a true four-seasons room! Insist on a glass
demonstration from any vendor trying to sell you a glass room addition. Four Seasons is confident
you'll see the superiority of CONSERVAGLASS™.
Four Seasons Sunrooms By Nu-Sash