From the Field
The questions we get asked on every project — LPC permit timelines, what counts toward Local Law 97, what an alteration agreement package looks like, when to repair instead of replace. Written by the Kenemax team.
The ten window operating types common in NYC buildings — and how each one drives egress, air-sealing, cleaning, and sightlines.
Wood, aluminum, fiberglass, composite, vinyl, steel — the frame decides thermal performance, maintenance, landmark eligibility, and cost.
Lab ratings describe the unit; the perimeter cavity, PTAC sleeves, and window AC units describe what the room actually gets.
Why pre-war NYC buildings often have single-hung originals, why double-hung is usually the right replacement, and when single-hung still makes sense.
Inside the application package for window replacements in designated brownstones — what reviewers look for, common rejection reasons, realistic timelines.
How fenestration upgrades feed a building’s LL97 emissions model, which U-values and SHGC ratings matter, and what a window project buys toward compliance.
Two projects can list the same window and get very different results. What a true performance spec defines — and where the cost shows up when it’s missing.
Glass gets the attention — but anchorage is what carries wind load into the building. How anchors are sized, where they fail, and what to look for on site.
In multi-story systems, slab movement is expected. Whether the sealant joint stays static or becomes a working movement joint comes down to the receptor detail.
Not every window leaving a factory is tested — but performance isn’t assumed. What in-plant testing of ~2% of production actually verifies.