CRL Quart Extend Rust Treatment *DISCONTINUED* Putty & Accessories PTI 707 does not harden

PTI 707 does not harden or lose flexibility

The backer rod must be installed with a blunt tool or roller

Isocyanates-Free

They are tapered on each end for use in six different joint widths

CRL Quart Extend Rust Treatment *DISCONTINUED* Putty & Accessories PTI 707 does not hardenQuality Rust Protection After Only One Coat Can Be Painted Over Requires No Primer CRL Extend Rust Treatment can be used on any surface that is susceptible to rust. This professional treatment gives quality protection against rust for three to five years, after only one coat. Simply clean the surface with a wire brush and apply the treatment with a brush or roller, even to damp surfaces. Extend can be painted over in 48 hours, in most cases without a