BS 851188
On 27 March 2019 the British Standards Institution (BSI) opened a public consultation exercise to gather feedback on the draft of the newly formed BS 851188. This is expected to replace the existing Publicly Available Specification PAS 1188 standards for flood resistance products.
This existing PAS standard is broken down into four separate parts:
- PAS 1188-1: Building aperture products
- PAS 1188-2: Temporary products
- PAS 1188-3: Building skirt and wall systems
- PAS 1188-4: Demountable products
Whereas the new BS 851188 standard will be split into the following categories:
- BS 851188-1 Flood resistance products. Part 1: Building products
- BS 851188-2 Flood protection products – Specification. Part 2
Drafts of both of these new standards are currently live for public comment and consultation through the BSI’s website. These can be accessed at:
- https://standardsdevelopment.bsigroup.com/projects/2018-00165
- https://standardsdevelopment.bsigroup.com/projects/2018-00164
The public consultation phase was expected to be open until 28 May 2019.
These standards look at a series of products for flood resistance, which seek to manage water entry into a building, allowing for appropriate conditions. With a wide range of products now available on the market including both active measures (requiring manual implementation in the event of a flood) and passive measures (not requiring manual implementation in the event of a flood outside of normal everyday use), this standard will help identify products that have met an industry recognised British Standard.
This article was originally published on 12 April 2019 on BRE Buzz. It was written by Matt Barker.
--BRE Buzz
[edit] Related articles on Designing Buildings Wiki
- Applying flood resilience technologies GG 84.
- BRE articles on Designing Buildings Wiki.
- BRE Buzz articles on Designing Buildings Wiki.
- Building flood resilience.
- Building Research Establishment.
- Changing attitudes to property flood resilience in the UK.
- Flood defences.
- Flood insurance.
- Flood risk.
- Flood.
- Future flood prevention.
- Pitt Review.
- Property flood resilience.
- Ten years on – Lessons from the Flood on building resilience.
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
The heritage of nuclear and conventional power stations.
New measures to stop people being ripped off
Government to protect families from cowboy builders and aggressive bailiffs.
New Futurebuild showcase brings an innovation-first approach.
National Planning Policy Framework
Understanding the 2026 changes.
ECA's public affairs priorities
Member consultation opens to shape priorities for 2027 to 2030.
Dutyholder responsibilities from 1 July 2026.
Where performance meets practice
The Building Envelope Stage at UKCW Birmingham.
CIAT publishes briefing on planning reforms.
Leaders in Learning for Practice Network
Call for conservation leaders in learning to register interest in new network.
The importance of early engagement
Construction lessons from the Trillium HealthWorks Experience Centre.
Mayors are to be given planning call in powers
Mayors across England will be able to make the most important planning decisions.
The Master Builder: William Butterfield and his times. Book review.

















