Uniformat B2030
Exterior door, hollow metal
Also called HM door, steel door, man door
Withdrawn. This is version 0.1.0. The entry was withdrawn in version 0.2.0 (2026-10-22): Its only sources were outside North America, which the library no longer uses. No US or Canadian source is available yet. Current status.
Service life
Years in service. One stated life so far; the band will widen as sources are added.
One source. This value rests on a single document (Design standards: employer's requirements – Technical Manual (ER-DFE-XX-XX-T-X-0201, revision A-C01), p97). Treat it as that source's figure, not a settled life, until others confirm it.
Basis
- 25 years · Design standards: employer's requirements – Technical Manual (ER-DFE-XX-XX-T-X-0201, revision A-C01), p97 · 2.6.4 “External windows and doors (including glazed/louvred components): 25 years” — Department for Education (England) (design life)Printed page 97. External windows and doors, material not stated. Minimum life expectancy (design requirement) for DfE-funded school buildings. Minimum design requirements placed on contractors for school buildings, not observed replacement ages. Section 5.1.4 (sanitaryware) refers to CIBSE Guide M Appendix 12.A1 'in general'.
How sources are chosen and recorded: sourcing policy.
Municipal lives for exterior enclosure (B20)
23 municipalities in Ontario, British Columbia and Alberta state a life for exterior enclosure as a whole, in 18 distinct tables: 10–85 years, median 30. 33 rows come from capital asset policies (accounting lives, used for amortization) and 6 from asset management plans (planning lives, used to forecast replacement). They describe the system rather than this component, and none is a measured life.
Years. Each dot is one stated life and each bar a stated range; equal values stack. Hollow marks are planning lives from asset management plans; filled marks are accounting lives from policies. The dashed line is the median. Policies that copy the same table count once.
All 34 stated lives
| Municipality | As written | Years | Kind | Source |
|---|---|---|---|---|
| Trent Lakes | Exterior Shell - Wood Finishing maintenance | 10 | accounting | p10 · 2009 |
| Telkwa | Exterior Envelope | 20 | accounting | p8 |
| Amherstburg | Exterior Envelops - Roof, Windows, Doors, Concrete | 20 | accounting | p8 · 2026 |
| Huron | Patrol Yards - Building Exterior | 20 | planning | p42 · 2025 |
| Huron | Property Services - Building Exterior | 20 | planning | p57 · 2025 |
| Huron | Housing - Building Exterior | 20 | planning | p68 · 2025 |
| Huron | Homes for the Aged - Exterior | 20 | planning | p77 · 2025 |
| London | Building Components - Shell (siding, windows, roofing) | 20 | accounting | p2 · 2023 |
| Meaford | Exterior Closure - Overhead Doors | 20 | accounting | p17 · 2020 |
| Simcoe | Envelope | 20 | accounting | p19 · 2025 |
| Trent Lakes | Exterior Shell - Windows | 20 | accounting | p10 · 2009 |
| Grey Highlands | Windows & Doors | 25 | accounting | p11 · 2026 |
| Meaford | Exterior Closure - Windows | 25 | accounting | p17 · 2020 |
| The Blue Mountains | Windows and Doors | 25 | accounting | p11 · 2019 |
| Trent Lakes | Exterior Shell - Vinyl | 25 | accounting | p10 · 2009 |
| Parksville | Metal Cladding | 30 | accounting | p9 · 2023 |
| London | Building Components - Interiors (partitions, doors) | 30 | accounting | p2 · 2023 |
| Meaford | Exterior Closure - Vinyl Siding | 30 | accounting | p17 · 2020 |
| Meaford | Exterior Closure - Standard Doors | 30 | accounting | p17 · 2020 |
| Fort St. James, Revelstoke, Rossland, Sicamous, Tumbler Ridge · same table | Exterior Envelope | 30–40 | accounting | p5, p9, p7, p9, p5 · 2010 |
| Okanagan-Similkameen | Exterior Envelope | 30–40 | accounting | p11 · 2023 |
| Salmo | Exterior Envelope | 30–40 | accounting | p6 · 2016 |
| Meaford | Exterior Closure - Wood Cladding | 40 | accounting | p17 · 2020 |
| Trent Lakes | Exterior Shell - Brick / Masonry/Steel | 40 | accounting | p10 · 2009 |
| Canmore | Envelope | 50 | accounting | p10 · 2025 |
| Parksville | Exterior Wall | 50 | accounting | p9 · 2023 |
| Chapple | Building Improvements - Exterior Envelope | 50 | accounting | p1 |
| Kenora | Buildings - Exterior Components | 50 | accounting | p15 · 2026 |
| Meaford | Exterior Closure - Concrete Block | 50 | accounting | p17 · 2020 |
| Meaford | Exterior Closure - Metal Cladding | 50 | accounting | p17 · 2020 |
| Rainy River | Building Improvements - Exterior Envelope | 50 | accounting | p11 · 2010 |
| Rainy River | Building Improvements - Exterior Envelope | 50 | planning | p17 · 2026 |
| Greater Madawaska, Quinte West · same table | Shell - Other | 55–85 | accounting | p17, p38 · 2025 |
| Huron | Homes for the Aged - Building Envelope | 60 | planning | p77 · 2025 |
Of 39 rows, 2 were compared with an image of their page; 37 were matched to their page automatically (the label and number appear in the page text). Follow the page link before relying on an automatically matched row. About the policies · All approved rows as JSON
Preventive maintenance
No maintenance tasks are sourced for this component yet.
Open questions
- Every source here is a published planning, design or accounting life. None is observed replacement data.
- No preventive maintenance tasks are sourced yet.
Know the answer? Send it with a source to [email protected].
Cite this
Citation
unfinished.one (2026). Exterior door, hollow metal, v0.1.0. https://unfinished.one/c/door-exterior-hollow-metal/v/0.1.0BibTeX
@misc{unfinished_door_exterior_hollow_metal_0_1_0,
title = {Exterior door, hollow metal},
author = {{unfinished.one}},
year = {2026},
version = {0.1.0},
url = {https://unfinished.one/c/door-exterior-hollow-metal/v/0.1.0},
note = {CC BY 4.0}
}Licence CC BY 4.0 · How to cite · JSON · Versions: 0.2.0, 0.1.0