PuttyLastic has been discontinued and is no longer being made, however limited quantities may still be in stock. Please email info@continentalprod.com or call 800-305-5869 for more information.

The “grand-daddy” of log home construction caulks Sealing log homes for almost three decades, Puttylastic is an excellent, all-weather log home construction caulk. Unlike other caulks, it is not as sensitive to adverse weather conditions, has better tube stability, and possesses qualities that are more suited to the unique nature of log homes. Puttylastic is designed to “cure” extremely slow. Its distinguishing feature is its ability to provide a soft, mobile seal.

We challenge you to find a caulk similar to Puttylastic. Very simply you won’t! Puttylastic is unique because it is composed of special types of polymer resins that are manufactured according to Continental’s particular specifications. These resins are extracted from trees and other natual sources to produce a caulk that is perfectly suited for log homes. Additionally, synthetic polymers, plastic fibers, and other additives are included to further enhance Puttylastic’s unique sealing properties.

The Puttylastic Difference

“The Soft Seal” When a proper size and shape bead is used (approximately 3/8 to 1/2 inches round), Puttylastic will remain in a soft, semi-fluid state for years. This distinctive characteristic is why Puttylastic is referred to as “the soft seal”. Because it stays soft, Puttylastic can adjust to the stress and tension of log movement. Many rubberized caulks used for log construction create a glue-like bond that can cause or aggravate stress cracks on the log surface. But because of its semi-fluid nature, Puttylastic yields to log movement without creating undue stress within the log. • Puttylastic is designed for internal sealing. Rubberized caulks rely on two-point contact for maximum stretch, flexibility, and seal. But any caulk used for internal joint sealing will encounter multiple points of contact, not the two point contact required for the successful seal of a rubberized caulk. Unlike harder rubberized caulks, Puttylastic is naturally suited for multiple point sealing because of its semi-fluid, self-sealing nature that tends to flow with log movement instead of resisting it Thus, during the critical early stages when a new log home shrinks, settles and moves the most, Puttylastic is much more likely to maintain a better internal seal. • Puttylastic won’t obstruct the “memory”‘ of Log Foam Gaskets. Memory, which is the ability of a compressed foam product to expand and contract to its original uncompressed state, is critical to the sealing success of a foam gasket. Puttylastic can come in contact with most foam gaskets without hindering the foam’s memory. Most caulks, when applied alongside a foam gasket, set up to a hard cure which in turn can restrict the expansion of the compressed foam and render it ineffective. Not with Puttylastic! Because Puttylastic will remain soft and mobile for an extended period of time, it won’t harden and glue the foam gasket in a set position. Thus, proper expansion of the foam during log movement can occur. As a result, both the foam and Puttylastic will work together to provide a superior sealing system. • Puttylastic does not require any critical surface preparation. When building a log home, care should be taken to keep the log surface free of debris. However, Puttylastic doesn’t require any special type of surface preparation to achieve good adhesion. Surface primers on the wood are not required before caulking, nor will minor surface dampness affect its adhering qualities. • Puttylastic is very user friendly at the job site. Puttylastic can be used in colder and more adverse weather conditions without affecting its sealing properties. Should it rain or snow during construction, Puttylastic will not wash off, stain the logs, or lose its sealing properties. Thus, it is a more practical and effective caulk for use in the real world conditions of the job site. • Freeze/thaw cycles won’t affect Puttylastic. Freezing cold temperatures will not damage Puttylastic. Water-based latex caulks can’t handle many freeze/thaw cycles without incurring permanent damage to the material. Puttylastic, however, can be stored in a minimally heated warehouse without harm or concern.

How long will Puttylastic last?

Stored under proper conditions, the shelf life of Puttylastic is up to three years while stored in its tube. With Puttylastic, there’s no need to worry about inventory concerns due to a limited shelf life of the caulk. Plus, job delays and money wasted on tube stability problems are virtually eliminated.

Used successfully since 1974!

Puttylastic has been used to seal tens of thousands of log homes since 1974. Its success is based on empirical, real world information, not theoretical laboratory data that has no direct relationship with log homes. Puttylastic’s reputation has been built on a foundation that spans over two decades of sealing log homes Application Data Sheet

Data Sheet & Installation