maintaining · best read in fall
How to Seal Gaps Between Logs: Caulk, Chinking & Backer Rod
If you can feel a draft at a log joint, you don't have a caulk problem — you have a gap-system problem. The fix is almost always the same three-layer logic: the right backing material, the right depth, the right flexible sealant on top.
Nobody searches for 'backer rod,' but it's the unsung part that makes the sealant actually work. Here's the whole system in plain terms.
In this guide
- Why sealant alone fails in big gaps
- Backer rod: what it is, how to size it
- Caulk vs. chinking — looks, texture, movement
- Bead sizing and tooling
- product picks by gap size (coming in the full draft)
Two-minute answer, one phone call
Sizing, matching, freight — talk to someone who has actually built with this stuff.
Draft status: outline + introduction. Full sections are written during the content phase — structure, titles and CTAs are final for review.