Sashco Log Jam Chinking is an acrylic elastic chinking joint sealant available in 5 gallon pails. Log Jam Chinking will give your log home the traditional, historic look of mortar chinking. Log Jam Chinking stretches and compresses as logs shrink and swell, up to 100% of its original joint size. Log Jam chinking has excellent memory. That means Log Jam chinking can absorb movement over and over again without tearing, pulling away, or looking "Stretched Out." And, because the majority of the movement log homes experience occurs during the first few years, Log Jam is guaranteed to absorb log movement for 5 years. Log Jam chinking tightly grips to all species of wood (including oily woods like cedar) and most log stains. Log Jam Chinking has a 1 hour fire rating and is the only chinking product on the market that is UL approved. Log Jam Chinking (like all chinking sealants) is recommended for use with Backer Rod for proper chinking application. Log Jam no longer contains phthalate plasticizers, which means it will not migrate or dissolve blue foam or white bead board. Made in the USA.
Log Jam Chinking Technical Data | MSDS 
| Application Temp: |
40° - 90° F. |
| Method: |
Bulk Loading Caulking Gun with Follow Plate or Snorkler. |
| Surface Preparation |
Best results are obtained when Log Jam is applied to wood that has been previously coated with a compatible and thoroughly cured stain. Clean the log surfaces thoroughly to remove dirt, pollen, bird droppings, and other surface contaminants. Install Backer Rod before Log Jam is applied. |
| Drying Time |
Cures in 3 weeks (1/2" thickness) and Tack free in less than 30 minutes at 70° F, 50% relative humidity. Paintable with latex coatings after a minimum of 24 hours curing (longer on wider joints) and after 5 days with most oil-based coatings. |
| Shelf Life: |
2 years. Freeze-Thaw Stability Passes 5 cycles 0°F to 70° F. |
| Cleanup: |
Soap and Water |
