Perma-Chink Log Chinking is a flexible, textured, pure acrylic chinking and sealant with unrivaled durability and appearance. It will perform well in any climate for the life of your log home!
Since 1981, Perma-Chink Log Home Chinking has proven itself on thousands of chinked and chinkless style homes to become the most widely applied chinking in the world. It’s simply the best chinking by every measure: longevity, appearance, performance and ease of application. Even though it looks and feels like traditional mortar, it is not. Perma-Chink Log Chinking is a pure acrylic that adheres to logs and stretches to maintain a tight seal by following log movement on homes which require chinking as part of the home design or offer the option of a chink gap.
View the “Log Home Sealant Application Guide” PDF from LogFinish.com for additional information about applying and maintaining Perma-Chink Log Chinking, or request a physical copy on our Sample Kit page.
When it comes to ordering sealants like Perma-Chink there are two dimensions that you need to know to determine how much product you will need:
Once you have determined both the width of the sealant joint and total number of linear feet, go to the Perma-Chink Calculator, which will tell you the number of pails required to complete your project. If you were thinking about using tubes consider this, the price difference between two pails of Perma-Chink and an equal amount of material in tubes more than covers the cost of a Cox Bulk Loading Gun and Cox Follow Plate.
Backing materials are an integral part of a sealant system and should be used wherever possible. The overall performance of any sealant system is dependent on the use of correct application thickness and proper backing. For small joinery the most commonly used backing is Round Backer Rod. It comes in a range of sizes and is relatively inexpensive. It is flexible it and can be pushed into a crevice without needing to be nailed or stapled.
Please Note: Temperature and humidity are largely responsible for log movement. When the temperature rises, the logs will expand, and at the coldest temperature, they will contract. When you apply sealant during cold, damp conditions the logs will more than likely be at the smallest dimensions (after some normal shrinkage may have occurred). When the weather dries out and warms up, the sealant will normally relax. Conversely, if you apply sealant during hot, dry conditions, the joint will be at its smallest point, and when temperatures fall or even turn very humid, the logs may contract and put the sealant in stress. Sometimes the contraction or movement may be severe enough to tear the sealant.
Apply Perma-Chink log home sealant after staining for the best finished appearance and least total labor to avoid getting stain on the new chinking.
Tip: Occasionally check the sealant using a toothpick to see if you are maintaining proper thickness. Once the sealant is roughly in place with air worked out of it, spray it with a light mist of water and tool smooth with a trowel or spatula.
Tip: If you used masking tape at the edges of the Perma-Chink, remove it now and smooth out edges with your tool.
Do Not Under Fill a Chinking Joint
It is better to fill a joint deeper than it is to make it too thin; you need an adequate mass of material to absorb movement that is created by logs expanding and contracting with the seasons.
Two Point Adhesion
Chinking or caulking must be able to move when the wood moves.
A caulking reservoir must be created so that there will be enough mass to allow movement of the wood and sealant. For example, if a product advertises 50% elongation, this tells you that a space must be created which is two to four times larger than whatever movement is expected of the wood. Basically if you expect an 1/8″ movement, your joint width should be 1/2″ to 3/4″.
Tooling and Finishing of Joints
Full Round Log Construction
Square Log Construction
Please note: It is always best to install backing materials such that the finished chinking application does not result in a horizontal lip or ledge at the bottom edge of the seam where rainwater can accumulate.
Foam Backer Systems
Log on Log, or Solid Log Wall Systems
Hard Board Spline Systems
Restoration of Failed Mortar
Please note: If you get any sealant on the surface of the wood, be sure to wipe it off with a wet rag immediately. Dried sealant is very difficult to remove. Clean your tools and equipment with clean water occasionally during application.
Store Perma-Chink chinking at moderate temperatures, in a clean, dry place and out of direct sunlight. Do not allow the material to freeze. Do not store in close proximity to radiant heat sources like fireplaces or wood stoves, as the excessive heat may cause the material to start curing.
Perma-Chink is available for shipment to all 50 states via FedEx.
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