The home of Q8 Log Oil®, NBS 30®, Mold-Buster®, Kleenstart and more





Outlast Q8 Log Oil® is an EPA-registered wood preservative specifically designed to control decay causing organisms (and mold, termites, powder post beetles) in decking and fencing – even pressure treated. It provides unsurpassed water repellency and sheer trans-oxide color with one coat coverage. Outlast Q8 Log Oil® is a totally non-film forming exterior treatment that will never crack or peel. The solution soaks deep into the wood to provide protection, not just on the surface, but also deep into the wood cell structure.


  • Rot control
  • Stops decay fungi and mold
  • Toxic to termites and powder post beetles
  • Superior water repellency
  • Beautiful translucent colors
  • EPA registered Wood Preservative
  • Controls cracking and splitting
  • Meets all Federal, State and Local VOC restrictions
  • Pre-tinted colors may be used on decks!
  • Available in quarts for End-Cut treatment which validates the warranty on Wolmanized, Thompsonized and Outdoor wood products.
  • Siding and non-contact applications are tintable with oil dispersible pigments and many universal type pigments - call for instructions or consult your dealer
  • Available in ALL 50 States!


To never require costly corn-cob removal. No sanding or sandblasting ever needed for re-coats.


No lap marks or brush marks. Low-pressure spray application to refusal.


Easiest Product To Apply.

  • One coat coverage - low pressure spray, brush or roll
  • Detergent and water clean-up 
  • Simple re-coat: no stripping required
  • Freeze/Thaw Stable - extended shelf life


Most complete exterior stain and finish product in a single coat application.

"...Q8 Log Oil is an excellent product. The protection it provides to our log homes has no match, along with an incredibly easy application. We at Authentic Log Homes of Vermont recommend this product to all our customers. Thank you CTA for making an exceptional product."

– Tyler Darling, Authentic Log Homes of Vermont

Stain and protect your deck the same day you build it.

For years, log home builders have been selling our EPA registered Q8 Log Oil to their homeowners because they know it works! By protecting their customer’s investment they ensure a happy homeowner long into the future! Log home builders also add our NBS 30 botanical insect repellent to stop carpenter bees in their tracks.

Other Stains and Seals


With Q8 Log Oil:



Q8 Log Oil is available in a variety of colors.

Paul's Color Chart


Find an Outlast Products dealer near you, or simply purchase directly below.