Seal-Once™ Nano Guard. The deep penetrating sealer and waterproofer for all wood surfaces including siding, decks, outdoor furniture, fences and log homes.
Waterproof your wood longer with Seal Once™ Nano Guard. Seal-Once Nano Guard Waterproofing Wood Sealer is a high performance, toxin free, environmentally friendly stain and sealer formulated for exterior and interior use on all properly prepared, unsealed wood surfaces including bamboo. Spend less time maintaining your wood surfaces and save money over time by investing in Seal-Once Nano Guard Waterproofing Wood Sealer.
Product Type: Water based formula
Uses: Decks, Railings, Shingles, Shake Roofs, Siding, Fences, Planters, Outdoor Furniture, Play Structures, Log Homes & Structural Framing.
Please note: Actual coverage will vary due to porosity of the wood on which it is applied. In cases where Seal-Once Nano Guard Waterproofing Wood Sealer is applied to very dry, weathered or media blasted wood 3 coats may be necessary.
Seal-Once Nano Guard Waterproofing Wood Sealer is a minimum two coat product. Applying less than two coats will greatly affect the durability and longevity of the product.
Please Note: Woods such as redwood, red cedar, mahogany, Douglas fir, etc. contain tannic acid which tends to migrate to the surface and discolor the stain, especially noticeable when using light colors. The discoloration is not harmful and can usually be removed. Apply a cleaning solution of All Wood Cleaner. Do not allow cleaning solution to dry on wood surfaces.
(all tints shown on Red Cedar)
Natural (not clear)
Cape Cod Grey
Great Preparation is the Key to Application Success!
All surfaces must be cleaned before applying Seal-Once Nano Guard Waterproofing Wood Sealer for best saturation and performance.
Surface Preparation for new, bare wood
Surface Preparation for maintenance cleaning
Please note: This cleaning solution will remove mold and mildew and will not remove the tint.
Maintenance Cleaning Surfaces Finished with Seal-Once Nano Guard
Please note: This maintenance cleaning solution is recommended by the manufacturer of Seal-Once Nano Guard. It will protect the tint while removing mold, mildew and dirt.
Mix a solution of one gallon water, 14 oz. bleach and one ounce of Dawn® type dish detergent.
Surface Preparation for weathered, gray wood
Use All Wood Cleaner according to directions to remove gray wood weathered from UV exposure.
Check the Moisture Content of Your Logs
Do not apply Seal-Once Nano Guard Waterproofing Wood Sealer to wood with over 22% moisture content.
To test the moisture content of your wood, borrow a moisture meter from your contractor or purchase one at your local hardware store. For quick reference:
Laminated logs: The moisture content of laminated logs is generally below 14%. These logs are usually ready for immediate application of Seal-Once Nano Guard Waterproofing Wood Sealer once they have been cleaned and allowed to dry for the appropriate amount of time. Always use a moisture meter to confirm the moisture content.
Kiln-dried or air dried logs: Use a moisture meter to check.
Green, wet, or treated logs: These logs have a moisture content greater than 22%. Allow the logs to sit in a dry area and check their moisture content on a regular basis. Logs with high moisture content can take up to 6 months to 1 year to reach the appropriate 22% or below moisture content for applying Seal-Once Nano Guard Waterproofing Wood Sealer.
Apply a Wood Preservative
A wood preservative (borate) is only necessary for new construction with logs, siding, and structures that are infested with powder post beetles and termites. Not needed for deck applications.
Have your logs been pre-treated with a wood preservative (borate) at the factory or mill? Contact your log or siding provider if unsure.
What is a wood preservative?
Wood preservatives (borate) make wood toxic to wood damaging organisms such as powder post beetles, carpenter ants and fungi. Wood preservatives do not protect against Carpenter Bees and other wood drilling insects, only those that ingest wood. Click here to find out about additives available for prevention of Carpenter Bees.
Why apply a wood preservative (borate) before applying Seal-Once Nano Guard Waterproofing Wood Sealer?
Applying a wood preservative can protect your home from damaging organisms for the life of the home. Seal-Once Nano Guard Waterproofing Wood Sealer soaks into wood to create a film that protects against mold/mildew growth and repels water. If a tint is chosen with Seal-Once Nano Guard Waterproofing Wood Sealer, the tint provides UV protection. Seal-Once Nano Guard Waterproofing Wood Sealer on its own is not a wood preservative. LogFinish.com recommends applying ShellGuard RTU or ShellGuard Concentrate to your logs before applying Seal-Once Nano Guard Waterproofing Wood Sealer.
Caulk All Gaps and Checks
Caulking is only necessary if your project contains logs and siding. Not needed for deck applications.
It is natural for wood to crack/check over time due to changing seasons, temperature and aging.
Fill any spaces between the logs and upward facing cracks/checks in the wood after applying a wood preservative and before applying Seal-Once Nano Guard Waterproofing Wood Sealer. Fill all joints, cracks, and nail holes with a good quality acrylic latex caulk/filler created specifically for use with wood like Energy Seal or Check Mate 2 prior to applying finish.
Test the Stain
We always recommended performing a two coat color test to a clean, dry, bare area of the structure that you are planning on applying Seal-Once Nano Guard Waterproofing Wood Sealer. Please Note: Seal-Once Nano Guard Waterproofing Wood Sealer is difficult to remove once it has been applied. Before doing a full application make sure that your color selection is correct, has a look you want, and a maintenance schedule you can manage.
Weather Conditions during Application
Apply Seal-Once Nano Guard Waterproofing Wood Sealer
Regular maintenance and annual attention to your log home can save you money and time. Proper maintenance starts with visual inspection. Weather, exposure and altitude may vary, so maintenance may be needed sooner than later in some locations.
Seal-Once Nano Guard Waterproofing Wood Sealer, is a water-based stain which can be shipped everywhere in the United States via FedEx. Seal-Once™ is shipped as a clear base product in one and five gallon plastic pails. Tints are separately packaged and are mixed in on site. LogFinish.com ships most orders the same day which are placed by 1:00 EST.
Click here for this product’s MSDS
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100 year old log lodge restored with Soy Gel Paint Stripper and finished with Seal Once Total Wood Protection in Mahogany
After stripping with Soy Gel Paint Stripper and application of Seal Once Total Wood Protection Mahogany
Before Seal Once Total Wood Protection in 2014.
A year after cleaning and application of Seal Once Total Wood Protection in Cedar. NBS 30 and Mold-buster additives were also mixed in with the Seal Once
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