Expert Tips to Keep Your Log Cabin Cozy

Backing Material

Why You Need It 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 and can be pushed into a crevice without needing to be nailed or stapled.

In situations where joinery is too narrow to insert some type of backing material, a narrow strip of water resistant masking tape works well. (Avoid masking tape that wrinkles when wet because the wrinkles may show through the sealant after it has cured.) A good option is to use pinstripe tape available at most automotive supply stores. The tape should be water resistant, so Energy Seal does not adhere to it, making it a suitable backer material. Pinstripe tape is available in widths down to 1/8”.

Approved Backing Materials

Grip Strip. • Backer Rod. • Polyisocyanurate board (Polyiso or R Max). • Expanded polystyrene (EPS) beadboard, foil-faced. Chinking applied over the foil covered side. • Polyurethane foam (Pur Fill, Great Stuff, Styrofoam). • Water-resistant masking tape or pinstripe tape. DO NOT USE: Extruded Polystyrene (causes blisters), Blue Board, Pink Board or other colored board that outgases to cause blisters.

Since 1981, Perma-Chink Systems’ log home sealants have proven themselves on thousands of chinked and chinkless style homes to become the most widely applied log home sealants in the world and simply the best by every measure: longevity, appearance, performance and ease of application.

If you are unsure about your backing material, check with Perma-Chink Systems before using it.

Company Permachink
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