{"id":"roof-built-up","version":"0.3.0","classification":{"uniformat":"B3010"},"names":["Roof, built-up"],"aliases":["BUR","tar and gravel"],"service_life":{"median_years":15,"range_years":[10,20],"range_basis":"source_spread"},"pm_tasks":[{"task":"Check ceilings and underside of deck for signs of leaks","frequency":"P6M","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":44,"checklist":"ARCS-RFS-01-06M Roof Inspection - Built Up Type"},{"task":"Walk the building perimeter; check walls, gutters, scuppers and downspouts for leaks","frequency":"P6M","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":44,"checklist":"ARCS-RFS-01-06M Roof Inspection - Built Up Type"},{"task":"Check for ponding (roof should drain within 48 hours) and plant growth","frequency":"P6M","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":44,"checklist":"ARCS-RFS-01-06M Roof Inspection - Built Up Type"},{"task":"Check for punctures, patches and debris near drains","frequency":"P6M","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":44,"checklist":"ARCS-RFS-01-06M Roof Inspection - Built Up Type"},{"task":"Check for wrinkles, buckles, blisters, soft spots and loose gravel","frequency":"P6M","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":44,"checklist":"ARCS-RFS-01-06M Roof Inspection - Built Up Type"},{"task":"Check flashing for wind damage, missing caulking and loose fasteners","frequency":"P6M","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":44,"checklist":"ARCS-RFS-01-06M Roof Inspection - Built Up Type"},{"task":"Check roof-to-wall and expansion joints","frequency":"P6M","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":45,"checklist":"ARCS-RFS-01-06M Roof Inspection - Built Up Type"},{"task":"Check coping for rust, open seams and cracks","frequency":"P6M","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":45,"checklist":"ARCS-RFS-01-06M Roof Inspection - Built Up Type"},{"task":"Check rooftop equipment is supported, flashed and secured","frequency":"P6M","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":45,"checklist":"ARCS-RFS-01-06M Roof Inspection - Built Up Type"},{"task":"Clean out and refill pitch pockets where filler is cracked","frequency":"P6M","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":45,"checklist":"ARCS-RFS-01-06M Roof Inspection - Built Up Type"},{"task":"Check ballast for even spread","frequency":"P6M","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":45,"checklist":"ARCS-RFS-01-06M Roof Inspection - Built Up Type"},{"task":"Check roof hatches and access doors: seals, latches, swing","frequency":"P6M","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":45,"checklist":"ARCS-RFS-01-06M Roof Inspection - Built Up Type"},{"task":"Remove trash and loose material from roof","frequency":"P6M","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":45,"checklist":"ARCS-RFS-01-06M Roof Inspection - Built Up Type"},{"task":"Check gutters, roof drains and downspouts are attached, sealed and clear","frequency":"P1Y","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":547,"checklist":"PLMB-DRN-01-01Y Roof Drains, Downspout, and Gutter Inspection"},{"task":"Check drain grates, strainers and screens; replace missing ones","frequency":"P1Y","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":547,"checklist":"PLMB-DRN-01-01Y Roof Drains, Downspout, and Gutter Inspection"},{"task":"Test downspout heaters, if fitted","frequency":"P1Y","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":547,"checklist":"PLMB-DRN-01-01Y Roof Drains, Downspout, and Gutter Inspection"},{"task":"Check for scouring where downspouts discharge onto lower roofs","frequency":"P1Y","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":547,"checklist":"PLMB-DRN-01-01Y Roof Drains, Downspout, and Gutter Inspection"}],"basis":[{"type":"public_document","life_type":"planning","title":"CNA e-Tool Estimated Useful Life Table","by":"U.S. Department of Housing and Urban Development","url":"https://www.hud.gov/sites/documents/eul_for_cna_e_tool.pdf","page":8,"code":"HUD CNA 3.3.4.2.1","label":"Low slope-Built-up Roof, with gravel finish","years":20,"note":"Same life for family and elderly properties. US multifamily housing. HUD gives 20 years with a gravel finish and 10 without."},{"type":"public_document","life_type":"planning","title":"CNA e-Tool Estimated Useful Life Table","by":"U.S. Department of Housing and Urban Development","url":"https://www.hud.gov/sites/documents/eul_for_cna_e_tool.pdf","page":8,"code":"HUD CNA 3.3.4.2.2","label":"Low slope-Built-up Roof, no mineral or gravel finish","years":10,"note":"Same life for family and elderly properties. US multifamily housing."},{"type":"public_document","life_type":"accounting","title":"Trent Lakes: 5.17 Capital Asset Policy","url":"https://www.trentlakes.ca/media/fjaduus0/517_capital-asset-policy.pdf","page":10,"years":15,"note":"Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page."}],"confidence":{"grade":"C","sample_size":null},"open_questions":["HUD gives planning lives for US multifamily housing; the municipal rows are Ontario accounting lives. Neither is observed replacement data.","Written for GSA contracted O&M in US federal buildings; job plans are generic and defer to manufacturer instructions, and the fire extinguisher plans only point to NFPA 10."],"contributors":["unfinished.one editors"],"last_reviewed":"2026-10-22","canonical_url":"https://unfinished.one/c/roof-built-up","versioned_url":"https://unfinished.one/c/roof-built-up/v/0.3.0","licence":"CC-BY-4.0","citation":"unfinished.one (2026). Roof, built-up, v0.3.0. https://unfinished.one/c/roof-built-up/v/0.3.0"}