BS 1521 Building Paper
As market leaders in BS 1521 Building Papers, we offer the entire range to suit a vast array of applications. With expert knowledge on all BS 1521 products, call us for enquiries.
Please click on individual products below for further details.
Introduction to Building Papers
Building papers have been available for many years and are used in a very wide range of primarily end-user defined applications. The term 'building paper' means different things to different people, but generally the accepted meaning is with reference to BS 1521 and BS 4016 paper, used primarily within the construction and temporary protection markets.
The BS 4016 grade is just one product, BS 4016 Type 2 Blue Breather Paper.
BS 1521 Building Papers
Building Papers have been available for many years, and are a general range of building membranes. Although over the years a number of typical uses for these products have been developed by a wide range of different end users, the BS 1521 specification does not define usage in any way, as it is purely a technical document. This situation clearly differs from, for example, roof breather membranes, which have been designed with a particular application in mind.
Typical uses for this product range include:
- Cladding underlay in uninsulated buildings, eg shed lining
- Vapour check within insulated structures
- Separation layer
- Flat lead roofing underlay
- Temporary protection
- Timber floor DPM
Due to the variety of potential uses of this highly adaptable product range, we can often only give general guidance, rather than defined recommendations within specific projects.
Only the standard A1F or A1F variants (FF1 and Polybit) may be used in applications which are termed permanent. All other building paper products are normally only suitable for temporary applications. The building papers suitable for permanent application can be found on the NBS Specification software. The links in the boxes below will direct you to the specification details.
Explore the range
- A1F Building Paper
- B1F Building Paper
- B2 Building Paper
- Polybit (Polythene Coated A1F)
- FF1 Foil Faced Building Paper
Building papers have many different uses. The installation will vary depending on the final application and would be down to the installer to ensure they are happy with all fixings.