Re-roofing rules in England, Scotland, Wales and Northern Ireland
Updated 23 October 2026 · SEO Dons Editorial
Check your re-roof against the rules ↓
How do the four nations compare for a commercial re-roof?
Each nation has its own building law, its own energy standard and its own checking body, so a portfolio of roofs across the UK needs four sets of questions. England and Northern Ireland test a re-cover through a renovation threshold, Wales applies the same Regulations with its own guidance, and Scotland tests it through the building warrant and Schedule 3. The table summarises the points that matter for a roof, using the dates published on the official pages. Northern Ireland has its own process: see re-roofing in Northern Ireland.
| Point | England | Wales | Scotland | Northern Ireland |
|---|---|---|---|---|
| Main law | Building Regulations 2010 | Building Regulations 2010, as amended for Wales | Building (Scotland) Act 2003 and Regulations 2004 | Building Regulations (Northern Ireland) 2012 |
| Who checks the work | Council building control or a private registered building control approver | Local Authority Building Control or a Registered Building Control Approver | Local authority verifier (the 32 councils), through a building warrant | District council building control |
| What triggers the rules for a roof | Renovation of a thermal element; more than 50% of its surface or a major renovation brings the whole element in, so far as feasible | Same Regulations, with Welsh guidance in Approved Document L | A warrant for work including alteration, unless Schedule 3 lists it; exempt work must still meet the standards | Notices and plans for building work; Part F applies the same 50% and major renovation tests |
| Roofer sign-off | NAPIT or CompetentRoofer schemes for replacing roof coverings | NAPIT or CompetentRoofer, authorised by the Welsh Government | Schedule 3 exemption, or warrant and completion certificate | Council notices, plans and completion certificate |
| Energy guidance | Approved Document L Volume 2, 2021 edition incorporating 2023 amendments; 2026 edition from 24 March 2027 | Approved Document L Volume 2, 2022 edition from 29 March 2023; 2026 edition from 4 March 2027 | Non-domestic technical handbook, April 2026, for warrants from 6 April 2026 | Technical Booklet F2, June 2022, in effect 30 June 2022 |
| Roof fire spread | Requirement B4(2) | Requirement B4(2) | Standard 2.8: vulnerability set by distance to boundary | Regulation 36: use and position of the building |
| Health and safety regulator | HSE | HSE | HSE | HSENI |
| CDM | CDM 2015 | CDM 2015 | CDM 2015 | CDM (Northern Ireland) 2016, in effect 1 August 2016 |
How does England handle it?
GOV.UK says you can choose your local authority’s building control department or a private registered building control approver for work that is not higher-risk. The Building Regulations require the whole thermal element to comply, so far as technically, functionally and economically feasible, where a renovation is a major renovation or covers more than 50% of the element’s surface area. The building control guide sets out the three routes, and the Part L guide covers the thresholds.
What is different in Wales?
Wales applies the Building Regulations 2010 as amended for Wales, and Welsh Ministers approve their own Approved Documents. Volume 2 of Approved Document L, 2022 edition, took effect on 29 March 2023. A 2026 edition takes effect on 4 March 2027, but not for work on an individual building where a building notice, initial notice or full plans were given before that date and work starts before the period ending 3 March 2028. The Welsh Government authorises NAPIT and CompetentRoofer for roof coverings. See the Wales page for the country’s industrial areas.
What is different in Scotland?
Scotland does not frame the trigger as a renovation percentage. A warrant is required for building work, which includes altering a building, unless Schedule 3 lists the work, and the local authority verifier decides how a roof covering fits. The April 2026 technical handbook applies to warrants submitted from 6 April 2026 and to exempt work commenced from that date. The Scottish building warrant guide covers the exemptions in detail.
What is different in Northern Ireland?
Northern Ireland follows England’s renovation logic in Part F but has its own regulator and booklets. Councils run building control, Technical Booklet F2 (June 2022) gives the energy guidance, and HSENI replaces HSE for site safety. The Northern Ireland guide sets out the notices and certificate.
Which dates matter for a project that straddles 2027?
England and Wales both bring in new energy approved documents in March 2027, twenty days apart. In England the changes do not apply where a building notice, initial notice or full plans application was given before 24 March 2027 and the work starts before 24 March 2028. Wales has the same shape with its own dates. For example, an owner notifies building control for one roof in Leeds and one in Cardiff on 10 March 2027. The Leeds notice predates England’s 24 March start, so the earlier edition can still apply there if work starts before 24 March 2028. The Cardiff notice falls after Wales’s 4 March start, so the 2026 edition applies.
That illustration is hypothetical, and each building control body decides which edition it assesses against. Owners comparing contractors across several regions can send an enquiry through the site’s form, and the locations hub lists every area covered.
Sources
- GOV.UK: Building regulations approval; Competent person schemes (updated 17 September 2026); Approved Document L (2021 edition); Approved Document L (2026) (published 24 March 2026); Building Circular 01/2026, checked 22 October 2026
- legislation.gov.uk: Building Regulations 2010, regulation 1, regulation 23 and Schedule 1, checked 22 October 2026
- Welsh Government: Building work: competent person schemes, Approved Document L (updated 7 April 2026), circulars WGC 005/2022 and WGC 006/2026, checked 22 October 2026
- Scotland: Building (Scotland) Act 2003, section 8; Building (Scotland) Regulations 2004, Schedule 3; gov.scot procedural handbook, April 2026 handbook page and 2022 section 2.8, checked 22 October 2026
- Northern Ireland: Department of Finance Building Regulations in Northern Ireland, Technical Booklet F2 and Recent amendments; legislation.gov.uk regulation 36 and regulation 43, checked 22 October 2026
- Health and safety: HSE press release, 1 July 2026; About HSENI; HSENI on CDM 2016; legislation.gov.uk CDM (NI) 2016 explanatory note, regulation 6 and CDM 2015 regulation 6, checked 22 October 2026
Common questions
Does CDM 2015 apply in Wales and Scotland?
CDM 2015 is the Great Britain regulation: the Northern Ireland regulations’ explanatory note names it as the corresponding GB rule, and HSE describes itself as Britain’s national regulator. Northern Ireland has separate CDM regulations enforced by HSENI.
Which nation’s rules apply to a portfolio of roofs?
Each building follows the rules of the nation where it stands. Welsh Ministers approve their documents for use in Wales only, and the Scottish and Northern Irish regimes are separate laws with their own checking bodies.
Do the 2026 Part L editions apply to a roof already notified?
Not necessarily. In England the changes do not apply where a notice or full plans application was given before 24 March 2027 and work starts before 24 March 2028. Wales uses 4 March 2027 and 3 March 2028 as its equivalents. Ask the building control body which edition it will assess against.
Is the same roofer self-certification scheme accepted in England and Wales?
GOV.UK and the Welsh Government each list NAPIT and CompetentRoofer for replacing roof coverings on pitched and flat roofs, including necessary connected work but not solar panels. Check the scope of the scheme for your building before relying on it.
Related guides
Check your re-roof against the rules
Six quick questions. The answers come from the guides on this site, they cover England unless you pick another nation, and they are general information, not advice on your building. Nothing you choose here is sent anywhere until you use the enquiry form below.