Waterproofing & Foundation Repair

Seal Crawl Space & Basement Performance Products

LumberKote™ is the most advanced polymer lumber sealer. It's strong, durable micro-film is engineered to directly protect your home's structural lumber from the effects of crawl space or basement moisture.

LumberKleen™ is safe and effective cleaner designed to immediately oxidize and remove organic stains, soils and odors from lumber and other porous and non-porous surfaces

MaxxBarrier™ delivers the most effective and advanced polymer vapor barrier sealant for interior concrete slabs, concrete block or poured basement foundation walls. Prevents moisture/vapor pass thru transmission.

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The Complete Crawl Space Framing & Subfloor Sealer

Watson Seal® LumberKote™ is the FIRST Non-Toxic, V.O.C. Free, Crawl Space Framing & Subfloor Polymer Sealer specifically designed to PROTECT your structural Framing and Subfloor System from excessive moisture absorption and rapid moisture uptake that deteriorates and rots lumber and accelerates the growth and damage by wood destroying mold and fungus. The sealer forms a tough, durable micro-film once dry that protects your crawl space framing and subfloor in one step. LumberKote’s™ micro-film resists mold and fungus (ASTM D3273) and is USDA and FDA compliant.

Our long-chain polymer technology utilizes controlled desiccation osmosis to immediately begin drying out lumber and stabilizing the lumber’s moisture content to acceptable levels when situations of repairs are required like sagging floors, hardwood cupping, etc. LumberKote™ works to prevent these costly issues from occurring, saving homeowners the trouble and expense down the road.

LumberKote™ works on ALL structural framing including the floor framing system, wall and attic framing including interior and exterior roof decking and on all types of lumber including Engineered Joists, OSB, Plywood, Spruce, Pine, Oak and Fir. It dries to durable satin finish and is a semi-transparent orange. This allows installers, home owners and potential home buyers to easily recognize this home’s floor framing system is Watson Seal® PROTECTED.

LumberKote™ delivers an affordable and unmatched level of protection and peace-of-mind in re-active damage repair, pro-active damage prevention, stage or budgetary situations. Talk to your Authorized Watson Seal LumberKote Certified Dealer about what’s best for you and your home’s situation.

LumberKote™ protects the entire floor framing system including joists, subflooring, girder beams, sill plate and rim band directly and controls automatically the correct moisture balance for wood to achieve strength, resist environmental issues and control warp, deflection, deterioration and rot of joists and subfloor materials that make up your home’s structural floor and wall framing systems. 

Using long-chain polymer technology, the permeation of moisture and organic food source (wood) is protected by a high adhesion coating that was designed over 20+ years ago, enhanced and strengthened to now be Commercial Grade. Our coating has been applied by tens of thousands of customers, reviewed by chemists, independently tested for factual content, exceeds all ASTM guidelines and requirements and real-world extreme tested during the early stages of its existence. Reviewed by insurance companies for coverage, scientists for non-toxicity, leaching, mold growth potential, absorption rates for moisture as well as adhesion,  LumberKote™ stands alone as a proven, modern method of protecting your home. 

LumberKote™ can be installed without the need for removing pre-existing mold and fungus unless those conditions are deemed heavy or extreme. Using LumberKleen™ is the BEST way to effectively clean and oxidize organic material before installing LumberKote™, ensuring the perfect install every time. Talk to your Watson Seal Certified Dealer at inspection to determine what’s best for your home.

In 2019, Pre and Post Certified Mold Inspection and Testing, required by Florida law, in conjunction with restoration efforts by licensed contractors of structures damaged by Hurricane Michael in the panhandle region (Mexico Beach), Watson Seal LumberKote™ sealed structures passed all inspections and post testing with impeccable results, rarely seen this dramatic in the industry. 

Watson Seal™ LumberKote™ is professionally installed by our Certified Dealers. Our Certified Dealers are experienced, “Customer First” local companies, fully licensed and insured. Our Dealers are Watson Seal™ Trained and Certified by our experts to deliver the ultimate customer experience and service.

LumberKote™ is translucent and allows for continued inspection for termite bonds without fear of older methods accidentally covering these valuable inspection areas and is non-corrosive to other materials such as pipes and HVAC lines or insulation, PVC plumbing,  PEX or electrical wiring and metal hardware. It’ safe for your family, including pets, the environment and there’s no need to leave your home during install.

With our “Perfect Install Guarantee” comes an industry leading 30 Year, Fully Transferable Manufacturer’s Warranty with up to $5,000 in water/moisture damaged lumber replacement.


LumberKote™ CS is FEMA Flood Grade Rated, staving off flood waters and protecting the lumber from rapid water uptake and biologicals for an unprecedented 30 days. In addition to our 30 Year Manufacturer’s Warranty, Watson Seal issues a multiple-event Lifetime Flood Warranty.

Our sealer’s history and independent certified testing allowed Watson Seal® a $1,000,000 Product Mold Rider direct from our Insurance Underwriter. In other words, the “risk” of mold and fungus to grow and feed on the lumber once Watson Seal® protected has been assessed and deemed insurable. 

Watson Seal® is a proud member of the USGBC (US Green Building Council) and the American Society for Testing and Materials and follow and exceed (ASTM) guidelines. While our sealer is Non-Toxic, VOC Free and safe for the entire family, pets and the environment, the quality, durability and benefits of Watson Seal® products remain uncompromised.

Watson Seal® LumberKote is USGBC LEED rated for points during construction, meet all indoor air quality guidelines and is a ‘must’ for flood and hurricane prone coastal and flood damaged structure remodels. Chemically verified by Independent Labs for non-toxicity and component registration.

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The most ADVANCED polymer lumber sealer


Professional Strength

 PRODUCT DESCRIPTION: LumberKleen RTU Peroxide Cleaner is a professional strength, biodegradable Peroxide based cleaner that is designed to clean and remove organic stains, soils and odors such as mold, mildew, carbon, soot, urine, feces and vomit.  IMPORTANT PROPERTIES:
● LumberKleen’s unique surfactant package provides superior soil wetting without leaving a residue.
● High foaming properties to lift and remove stain and soil residues.
● Versatile- effective on a wide range of surfaces.
● Effective- Assists in removing mold & mildew as well as a variety of other stains 

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Eliminate Vapor Transfer

The Ultimate Polymer Vapor Barrier
Since their inception, all basements face an age old problem-moisture. Moisture in two forms, liquid and vapor. As the foundation walls are below grade, the active wedge created around basement foundation walls creates an easy way for rain water to infiltrate the disturbed ground and wreak havoc. Water will always take the path of least resistance, finding its way though the foundation wall, usually at or near where the foundation wall and slab floor meet, thus a “leaky” basement.


The other problem is vapor, which potentially is even a more destructive threat than ground water seepage. As the ground water fills the active wedge, the concrete block or poured concrete foundation walls soak up the water like a sponge and transfer that moisture to the interior of the basement. This is known as “wicking” or “capillary action”. That moisture eventually and continuously is transferred into the interior space as vapor, increasing the interior’s humidity to extreme levels. The same situation exists with the crawl space.

This extreme situation causes lumber, joists and subflooring to absorb excessive levels of moisture, leading to sag, cupp, mold and fungus and deterioration and rot, not to mention HVAC system overload and improper cycling or constant running, including dehumidifiers.

MaxxBarrier™ delivers the ULTIMATE and most ADVANCED polymer vapor barrier for concrete slabs and concrete block or poured crawl space or basement foundation walls

MaxxBarrier™ creates a physical polymer barrier that exceeds ASTM guidelines for permeation, thus the ELIMINATION of over 97% of moisture pass thru and backed by our 20 Year Interior / 10 Year Exterior Warranty. While dehumidifiers, if needed at all, will actually cycle less and create a much more comfortable, healthy and enjoyable space with less electrical demand. 

MaxxBarrier™ inhibits and resists mold and fungus (ASTM D3273), is FDA and USDA compliant and is FEMA Flood Grade. Along with MaxxBarrier’s waterproofing* aspects,  it’s adhesion, control of efflorescence or limeouts, potential increased PSI for new-pour curing-range being 5% and up, traffic resistance for residential use, and the flexibility to paint over or finish the space with drywall make MaxxBarrier™ the smart and economical choice.

MaxxBarrier™ is the perfect compliment with LumberKote™ for a complete and permanent solution to moisture issues in crawl space and basement homes and are installed by our experienced Certified Dealers.

*Waterproofing guidelines= 2 coats

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