Uniformat B2020
Window, aluminum frame
Also called aluminum window, storefront window
Service life
Years in service. The band runs from the shortest to the longest life the sources state, so it shows how much they disagree, not how long 80% of units last. The line is the median of the stated lives.
Basis
- 35–40 years · CNA e-Tool Estimated Useful Life Table, p8 · HUD CNA 3.3.3.2.3 “Aluminum” — U.S. Department of Housing and Urban Development (planning life)Family properties 35 years, elderly 40. US multifamily housing.
How sources are chosen and recorded: sourcing policy.
Municipal accounting lives for exterior enclosure (B20)
12 municipal policies from Ontario set a life for exterior enclosure as a whole, from 11 distinct tables: 10–85 years, median 30. These are amortization periods chosen for accounting, not measured lives, and they describe the system rather than this component.
Years. Each dot is one stated life and each bar a stated range; equal values stack. The dashed line is the median. Policies that copy the same table count once.
All 21 stated lives
| Municipality | As written | Years | Source |
|---|---|---|---|
| Trent Lakes | Exterior Shell - Wood Finishing maintenance | 10 | p10 · 2009 |
| Amherstburg | Exterior Envelops - Roof, Windows, Doors, Concrete | 20 | p8 · 2026 |
| London | Building Components - Shell (siding, windows, roofing) | 20 | p2 · 2023 |
| Meaford | Exterior Closure - Overhead Doors | 20 | p17 · 2020 |
| Simcoe | Envelope | 20 | p19 · 2025 |
| Trent Lakes | Exterior Shell - Windows | 20 | p10 · 2009 |
| Grey Highlands | Windows & Doors | 25 | p11 · 2026 |
| Meaford | Exterior Closure - Windows | 25 | p17 · 2020 |
| The Blue Mountains | Windows and Doors | 25 | p11 · 2019 |
| Trent Lakes | Exterior Shell - Vinyl | 25 | p10 · 2009 |
| London | Building Components - Interiors (partitions, doors) | 30 | p2 · 2023 |
| Meaford | Exterior Closure - Vinyl Siding | 30 | p17 · 2020 |
| Meaford | Exterior Closure - Standard Doors | 30 | p17 · 2020 |
| Meaford | Exterior Closure - Wood Cladding | 40 | p17 · 2020 |
| Trent Lakes | Exterior Shell - Brick / Masonry/Steel | 40 | p10 · 2009 |
| Chapple | Building Improvements - Exterior Envelope | 50 | p1 |
| Kenora | Buildings - Exterior Components | 50 | p15 · 2026 |
| Meaford | Exterior Closure - Concrete Block | 50 | p17 · 2020 |
| Meaford | Exterior Closure - Metal Cladding | 50 | p17 · 2020 |
| Rainy River | Building Improvements - Exterior Envelope | 50 | p11 · 2010 |
| Greater Madawaska, Quinte West · same table | Shell - Other | 55–85 | p17, p38 · 2025 |
Each row was matched to its page automatically: the label and the number appear in the text of the cited page. An editor has not yet compared every row with the table, so follow the page link before relying on one. About the policies · All approved rows as JSON
Preventive maintenance
No maintenance tasks are sourced for this component yet.
Open questions
- Only one source so far: HUD planning lives for US multifamily housing. Canadian and observed sources are needed.
- No preventive maintenance tasks are sourced yet.
Know the answer? Send it with a source to [email protected].
Cite this
Citation
unfinished.one (2026). Window, aluminum frame, v0.1.0. https://unfinished.one/c/window-aluminum/v/0.1.0BibTeX
@misc{unfinished_window_aluminum_0_1_0,
title = {Window, aluminum frame},
author = {{unfinished.one}},
year = {2026},
version = {0.1.0},
url = {https://unfinished.one/c/window-aluminum/v/0.1.0},
note = {CC BY 4.0}
}Licence CC BY 4.0 · How to cite · JSON · Versions: 0.1.0