Fire and water resistant expansion joint system

A fire and water resistant architectural expansion joint system, comprising:

• a first substrate;
• a second substrate arranged at least substantially coplanar to the first substrate;
• and
• an expansion joint located in compression between the first substrate and the second substrate, the expansion joint comprising,
• foam;
• a fire retardant material infused into the foam;
• and
• a water resistant layer;
• wherein the fire and water resistant expansion joint system is configured to define a profile to facilitate compression of the system when installed between substrates, and the fire and water resistant expansion joint system is capable of withstanding exposure to a temperature of about 540° C. or greater for about five minutes.

A method of installing an expansion joint, comprising:

• locating a first substrate;
• locating a second substrate arranged to be at least substantially coplanar with the first substrate and being spaced therefrom by a gap;
• providing a compressed expansion joint system comprising a foam infused with a fire retardant material and having a water resistant layer thereon;
• inserting the compressed expansion joint system into the gap between the first substrate and the second substrate;
• and
• allowing the compressed expansion joint system to decompress to fill the gap between the first substrate and the second substrate, wherein the expansion joint system is capable of withstanding exposure to a temperature of about 540° C. or greater for about five minutes.