Henry Frerk Sons was founded over a century ago by the determination and hard work of Henry Frerk who described himself as a "sawed-off and hammered down German." Henry frerk sons inc has been supplying building materials throughout the chicagoland area since 1888. our current product mix is heavily focused on: Masonry Plaster Restoration Materials Tuckpointing Sewer Materials we also provide specialty concrete: •latex modified concrete •rapid hardening concrete We provide instant CUSTOM MIX concrete. all of our concrete is mixed on-site. this is accomplished by our unique mobile concrete mixing equipment which is manufactured in our own shop by our staff mechanics.