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It’s no secret that architects and designers prefer an all-glass entrance system to a bulky, full-framed counterpart. The reasons are clear: more glass and less visible hardware means unobstructed views, better daylighting, and a high-end, minimalist aesthetic. Unfortunately, increasingly stringent energy and air infiltration codes—such as California Title 24—pose a challenge when specifying exterior entrance systems with all-glass visuals. This includes monolithic heavy-glass doors. It becomes a give and take scenario that can ultimately result in selecting standard, aluminum-framed thermal doors that don’t have much to offer in terms of attractive aesthetics.
