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Log Jam FAQs

Log Jam FAQsCan you stain over Log Jam and Log Builder?
Yes. Most stains can be successfully applied over Log Jam and Log Builder. However,the appearance of stain applied over chinking or caulking will almost always be different than the appearance of the same stain applied over wood. This is because of the differences in color and surface texture between such sealants and wood. So, before applying a stain to a large area where the stain is being applied to both sealants and wood, be sure you test a small area to confirm whether or not the appearance will be acceptable. Also, it is important to note that many (but not all) stains are based on resins or polymers that, when dry, are quite rigid and hard, far harder and far more rigid than either Log Jam Chinking or Log Builder sealant. This can lead to problems later as the chinking or caulking tries stretch to accommodate the inevitable movement that continually occurs between logs due to changes in temperature and moisture. Because the rigid coating cannot move nearly as easily as the sealant, it builds up localized areas of stress and can cause the surface of the sealant to develop shallow surface cracks, which, while not normally affecting the overall sealant performance, can lead to an unappealing appearance.
What about Log Jams 1 hour UL fire rating?
Log Jam is the only chinking to hold a 1 hour UL fire rating when applied in accordance with the Fire Resistance Directory Design No. UL519.
What can I use to clean up if I get messy with the Log Jam?
While still wet, Log Jam cleans up easily with water (either on hands, tools or wall surfaces). Once it completely dries it is much harder to remove, and often needs to be cut or scraped off. If it dries on your hands, you can usually remove it by just rubbing your hands together and it will roll up and off the skin.
What do you use to tool Log Jam / Log Builder?
A variety of tools and techniques can be used whatever works best for you:

  • foam brushes (kept wet from pails of water)
  • steel or plastic trowels (of various widths).
In both cases, it helps to lightly spray water (or a water/alcohol mix) on the surface of the chinking immediately before brushing or troweling.
Similar tools and techniques can also be used with Log Builder, but frequently, for small joints, a wetted finger will also work well.
What is the difference between Log Jam and Log Builder?
Log Jam Chinking and Log Builder Caulk are very similar in their chemical composition. The primary difference between them is that Log Jam is textured to simulate the appearance of traditional mortar.