Sliding Window Design Tool

Design sliding windows, lift-slide patio doors, and tilt-slide systems with accurate track, interlock, and panel calculations. Built for aluminium and UPVC sliding work.

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Sliding Systems, Done Right

From 2-panel patio doors to 6-panel lift-slide walls — Doorwin handles every configuration.

1

Track & Interlock Geometry

Enter opening size and panel count; Doorwin calculates track length, interlock positions, sash widths, and glass sizes automatically. No more sliding systems that don't fit the hole.

2

Lift-Slide & Tilt-Slide Support

Full support for heavy lift-slide hardware (Schüco ASS, Reynaers Hi-Finity), tilt-slide, and traditional sliding patio systems with configurable rollers, handles, and multi-point locking.

3

Structural Load Calculations

For wide panels (over 2m sash width), Doorwin flags wind-load issues and suggests reinforced profiles or thicker glass specs that meet structural requirements for your wind zone.

4

Threshold & Weatherseal Detail

Low-threshold, thermal-break, and drainage-channel specifications are built in. Specify the exact threshold that matches your site's damp-proof course and floor level.

Frequently Asked Questions

What sliding systems does it support?
All common sliding window and door systems — standard 2+2 patio, single-track sliding sash, 4-panel bi-parting, lift-slide, tilt-slide, and frameless sliding glass. Aluminium and UPVC frame systems both covered.
Can I calculate glass weight for lift-slide doors?
Yes. Enter sash size and glass spec — Doorwin calculates glass weight and recommends hardware rated for that load. Critical for lift-slide doors where incorrect hardware fails within months.
Does it draw the track layout for installation?
Yes. Exported drawings include track position, interlock lines, and handle positions dimensioned from a datum line. Your fitters get a sheet they can work from directly.
Is it suitable for commercial sliding shopfronts?
Yes. Commercial sliding shopfronts up to 6 panels and 6m opening width are fully supported, including telescopic and curved-track configurations.

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Stop Guessing on Sliding Systems

Sliding windows and patio doors are unforgiving. Download Doorwin and get every dimension right the first time.

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Sliding Window Design Tool – Patio Doors & Lift-Slide | Doorwin | Doorwin