About this document
Guidance for designers, contractors and building owners who are considering building products different from those originally requested and specified.
There are a number of reasons you might consider substituting a building product. These include price, lack of availability, or pressure from the building owner to use an alternative.
If you are considering product substitutions to mitigate the impact of shipping delays and other
disruptions caused by the COVID-19 pandemic, then this guide may also be of use to you.
Your rationale for wanting to substitute a product may be valid but when the product is part of a building system it can often have much wider implications.