Henselstone Window & Door Systems
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Dusk view of a Henselstone corner curtain wall with a glowing timber staircase inside

German-engineered fenestration · exclusively in the United States

Engineered in Germany. Installed and serviced by one team.

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≤0.28Uw-value, installed
DP 65+Air · Water · Structural
140 mphSustained wind load
25+ yrsIn business
NAMICertified
The coastal view a Henselstone lift-and-slide opens onto
Lift & slide

Six hundred pounds.
One finger.

Our largest sliding panels lift clear of their seals and glide on a single track — up to thirty-two feet of opening that still seals tight against the coast.

Product systems

Custom-engineered systems, each manufactured for a single project.

uPVC
System 01

uPVC

Five-chamber, steel-reinforced profiles. Maintenance-free, with 50+ woodgrain laminations.

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Wood
System 02

Wood

83 mm laminated hardwood in eight species. Pre-finished inside and out for a full warranty.

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Aluclad
System 03

Aluclad

Hardwood core with aluminum, bronze, or stainless cladding and integrated shell drainage.

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We are not a showroom. We are the specification partner who stays on the project from drawing to service.
The engagement model

Most window suppliers hand off a product. We own the full path — design consultation, engineering and shop drawings, custom manufacturing in Germany, logistics, certified installation, and long-term service.

Because we finish every wood and metal-clad unit completely before it ships — not on site — we stand behind a ten-year full-replacement warranty, finishes included.

See the process
Kiawah Island coastal residence at dusk with warm-lit floor-to-ceiling glazing
Featured project

Kiawah Island I

Kiawah Island, South Carolina · uPVC windows & wood entry doors · Lift-and-slide
For architects & builders

Specified to perform. Documented to prove it.

Full technical data, certifications, CAD/BIM, and shop-drawing support. Bring us in at the specification stage.

Enter the trade path
For homeowners

Quieter and warmer than the windows you know — and we'll show you the numbers.

If you're building or renovating, start with a consultation. We'll help you understand why this product is different.

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R-8 to R-10Thermal Up to 50 dBAcoustic DP 65+Structural 140 mphCoastal 0.09 UwPassive house See what these numbers beat →
From the journal

Technical reading for the specification stage.

Technical6 min

What is DP 65? Design pressure ratings for coastal homes

Why the design-pressure number on a window schedule decides whether a home survives a Category 4.
Education8 min

Tilt-turn vs. casement: what architects need to know

Two operations, two very different outcomes for egress, ventilation, and air-tightness.
Technical7 min

Passive house windows: triple glazing and Uw values explained

What a 0.09 glass Uw actually means for comfort, condensation, and net-zero targets.
Bring us in early

The best window decisions are made at the drawing stage.

Specification, engineering, and shop drawings are easiest — and cheapest — to get right before construction documents are final.

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