Fire Clay, Fireclay, Mortar Clay and/or Bricklayers Clay is an organic material that has been dried and turned into a powder form. It is usually a brackish red / brown in color or it could be white / grey. The texture is like baking flour or baking soda.

These powdered clays can be found at most Masonry and Landscape Supply Stores for about $10 per 50lb bag of firing clay.  You may find a bag of fire clay at a Big Box hardware store like Home Depot, Lowes or Menards - but it’s unlikely. 

If you are unable to find a bag at your local Masonry & Landscape Supply Store, check with a local Ceramic / Pottery Supply.

Still no luck?  No worries, here are a few companies that will ship the fire clay to you.  KEEP IN MIND... FedEx & UPS are not inexpensive, so make sure you search locally before buying online.

Laguna Clay - They have an old-school ordering system, but they ALWAYS have fire clay in stock.  Ask for LINCOLN 60 FIRE CLAY.

Mid-South Ceramic - Purchase Hawthorn Bond Fire Clay 40Mesh. 

• Low Fire Clay - Very Porous / Not Waterproof
• Mid Fire Clay - Excellent Bonding Properties / Waterproof
• High Fire Clay - Excellent Bonding Properties / Waterproof 

High-Temperature Mortar Mix Recipe: 

3 Parts Silica Sand
1 Part Quicklime
1 Part Fire Clay
1 Part Portland Cement

No returns / No refunds.  If the product arrives damaged, do not accept package - and pictures must be submitted w/ claim.  Fireclay ships on Fridays &/or Mondays only.