The Roofing Standards That Changed While the Paperwork Didn’t

A British Standard does not stop being quoted when it is withdrawn. On roofing jobs, superseded editions are still turning up in specifications, method statements and product literature years after they were replaced. Here are the ones worth checking before your next job goes out.

Every roofer knows the codes that govern their work. Fewer have time to track when those codes change. The result is a quiet gap between the standard a job is built to and the standard the paperwork says it is built to, and on roofing that gap has grown over the past few years.

At Renovation Notes we keep a register of British Standards that have been withdrawn or superseded but are still being cited as current in UK building guidance. It now lists 230 of them. Roofing accounts for a surprising share, and several are documents contractors and specifiers use every week.

Flat Roofs: BS 6229:2018 is No Longer Current

The most recent change is the flat roofing code of practice. BS 6229:2018 was withdrawn in December 2025 and replaced by BS 6229:2025, Flat roofs with continuously supported flexible waterproof coverings. It is still quoted as current in a great deal of guidance, product literature and older specification clauses.

If you are pricing flat roof work from a specification written before this year, check which edition it calls up. A clause that cites the 2018 edition is not wrong about the roof, but it is out of date about the reference, and on a disputed job that detail matters.

Slating and Tiling: BS 5534 and BS 8000-6

BS 5534, the code of practice for slating and tiling, has been through several editions. The 2003 edition was withdrawn in 2015, and the current version is BS 5534:2014+A2:2018. The 2003 text is still reproduced in guidance, which matters because the current edition changed the approach to wind uplift and stopped relying on mortar bedding alone to secure ridges, hips and verges.

The workmanship standard has moved too. BS 8000-6:2013 was replaced by BS 8000-6:2023, which now covers slating and tiling of walls as well as roofs. Method statements that still cite the 2013 edition are worth updating.

Condensation: BS 5250 Changed its Name

BS 5250:2011+A1:2016 was withdrawn in 2021. Its replacement, BS 5250:2021, is now titled Management of moisture in buildings, and the clause numbering changed with it. Any condensation risk statement in a roof specification that points to a clause number in the old edition may now be pointing at the wrong clause.

Fire Test Classes That No Longer Have a Test Behind Them

Several parts of BS 476 used for the fire classification of roofing and insulation products have been withdrawn, including parts 4, 6, 7 and 11. Descriptions such as “Class 0” and “Class 1 surface spread of flame” still appear in product data and specifications, but in England the recognised route is now the European classification under BS EN 13501-1. When a product is described only in the old terms, ask for its current classification.

Materials Standards Replaced by European Ones

Some of the oldest references on site are material specifications that were replaced by European standards long ago:

• BS 680-2 (roofing slates) was replaced by BS EN 12326-1.
• BS 402-1 (clay plain tiles) was replaced by BS EN 1304.
• BS 747 (reinforced bitumen sheets) was replaced by BS EN 13707, read with BS 8747.
• BS 1178 (milled lead sheet) was replaced by BS EN 12588, though the familiar Code 3 to Code 8 numbering carried forward.

These rarely cause problems on their own, but they are a sign that a specification has been copied forward without being checked.

Why This Matters on a Roofing Job

None of this changes how a good roof is built. It matters because specifications, warranties and building control conversations all rest on the references in the paperwork. A job built to the current standard but documented against a withdrawn one invites questions at handover, and in a dispute the first thing anyone checks is whether the cited standard was current.

A practical habit is to check the edition of every standard cited in a specification or method statement before the job starts, particularly on work priced from an older template. The current editions can be confirmed through the BSI Knowledge catalogue. For a quick cross-check of which references have been superseded, the Renovation Notes withdrawn standards register lists each withdrawn standard with its replacement and withdrawal date, and is checked nightly.

Gediz Karaca is founder and editor of Renovation Notes, an independent library of UK renovation guidance covering costs, planning, building regulations and structure.