WRP SYSTEM & PRODUCT GUIDES
How to Use CuB Liquid to Protect Wood
Learn how to use CuB Liquid to protect wood, how its water-based copper-and-borate preservative system works, when it should be applied, and how it fits into the WRP Wood Repair System after deteriorated wood has been removed.
UNDERSTANDING CUB LIQUID
How to Use CuB Liquid to Protect Wood
Understanding how to use CuB Liquid to protect wood starts with knowing that Genics CuB Liquid is a ready-to-use, water-based wood preservative formulated with copper and borate technology. It is designed to treat exposed wood after deteriorated material has been removed, helping protect the remaining sound wood before the repair is rebuilt.
Unlike wood fillers or epoxies, CuB Liquid is not a repair material. Its purpose is to penetrate prepared wood fibers and provide preservative protection against wood-decaying fungi and wood-destroying insects before restoration continues. For larger bare wood surfaces, read How to Protect Exposed Wood with Board Defense .
Within the WRP Wood Repair System, CuB Liquid is typically applied after the damaged wood has been cleaned out and before Wood Consolidant Explained, epoxy repair materials, or other restoration products are installed.
HOW IT WORKS
How CuB Liquid Protects Wood
CuB Liquid is designed to penetrate prepared wood and distribute its preservative ingredients throughout the wood fibers. Once applied to clean, exposed wood, the water-based solution carries copper and borate compounds into the remaining sound wood to help provide long-term preservative protection.
According to the manufacturer, the copper and borate formulation is intended to help protect wood against decay fungi, mold, termites, carpenter ants, and other wood-destroying organisms. Because it is a penetrating preservative rather than a surface coating, it becomes part of the treated wood instead of simply sitting on the surface.
For best results, CuB Liquid should be applied only after all deteriorated wood has been removed and the remaining wood has been thoroughly cleaned. Once the preservative has been allowed to penetrate and dry according to the manufacturer's recommendations, the repair can continue using the appropriate WRP products.
COMMON APPLICATIONS
When to Use CuB Liquid to Protect Wood
The best way to use CuB Liquid to protect wood is after deteriorated wood has been removed and clean, sound wood has been exposed. It is intended to help preserve the remaining wood before the repair is rebuilt with the WRP Wood Repair System.
Structural Beam Ends
Treat exposed beam ends after removing deteriorated wood and before rebuilding the repair.
Porch Columns
Apply CuB Liquid to cleaned wood inside repaired columns to help protect the remaining sound wood.
Pergolas & Heavy Timbers
Preserve exposed structural wood that is repeatedly subjected to moisture and weather.
Historic Restoration
Help preserve original wood components when repairing historic structures where replacement is undesirable.
Apply CuB Liquid Before Rebuilding the Repair
CuB Liquid should be considered a wood preparation step. Once the deteriorated wood has been removed and the remaining wood has been cleaned, CuB Liquid can be applied according to the manufacturer's recommendations before using wood consolidant, epoxy repair materials, Cobra Rods (when appropriate), and the remaining WRP repair products.
Next, we'll see exactly how CuB Liquid fits into the complete WRP Wood Repair System and where it belongs in the repair sequence.
COMPLETE REPAIR PROCESS
How CuB Liquid Fits Into the WRP Wood Repair System
How to use CuB Liquid to protect wood begins during the preparation stage of the repair process. After all deteriorated wood has been removed, it helps treat the remaining sound wood before the repair is rebuilt with the WRP Wood Repair System.
Remove Deteriorated Wood
Completely remove soft, decayed, and structurally unsound wood until only clean, solid wood remains.
Apply CuB Liquid
Spray or apply CuB Liquid to the exposed wood following the manufacturer's recommendations, allowing the preservative to penetrate the remaining wood fibers.
Continue the Repair
Once the treated wood is ready, continue with the WRP Wood Repair System using wood consolidant, reinforcement products when needed, epoxy repair dough, and finishing materials.
Complete the Restoration
Sand, shape, prime, and paint the repaired area while the treated wood continues to benefit from internal preservative protection.
What CuB Liquid Does
- Treats exposed sound wood.
- Provides copper and borate preservative protection.
- Helps protect against decay fungi and wood-destroying insects.
- Prepares the remaining wood before rebuilding the repair.
What WRP Does
- Stabilizes remaining wood.
- Rebuilds missing wood.
- Creates a permanent repair.
- Produces a finish-ready surface that can be sanded, primed, and painted.
Two Products. One Complete Repair System.
CuB Liquid and the WRP Wood Repair System perform different but complementary functions. CuB Liquid helps preserve the remaining wood after deterioration has been removed, while WRP products restore the missing wood and permanently rebuild the damaged area. Together they create a comprehensive approach to exterior wood restoration and long-term protection.
KEY BENEFITS
Benefits of Using CuB Liquid to Protect Wood
CuB Liquid is formulated to help protect exposed wood before it is rebuilt with the WRP Wood Repair System. By treating the remaining sound wood after deterioration has been removed, it becomes an important part of a comprehensive exterior wood preservation strategy.
Deep Penetration
The water-based formulation is designed to penetrate exposed wood fibers, helping distribute preservative ingredients throughout the treated wood.
Copper & Borate Protection
Combines copper and borate technology to help protect wood from fungal decay and wood-destroying insects.
Ready to Use
No mixing is required. Apply directly to properly prepared wood following the manufacturer's recommendations.
Complements WRP Repairs
CuB Liquid prepares and helps protect the remaining wood, while the WRP Wood Repair System restores the missing wood and completes the permanent repair.
Designed to Work as Part of a Complete Repair System
Long-lasting exterior wood repairs require more than rebuilding missing wood. Proper moisture control, removal of deteriorated material, preservative treatment, structural restoration, and protective finishes all contribute to extending the service life of the repair. For additional technical guidance on wood deterioration and preservative treatment, review the USDA Forest Service Wood Handbook chapter on biodeterioration. CuB Liquid fits naturally into this process by treating exposed wood before restoration continues with the WRP Wood Repair System.
COMMON APPLICATIONS
Where to Use CuB Liquid for Wood Protection
CuB Liquid is commonly used anywhere deteriorated wood has been removed and the remaining wood is being preserved before repair. It is especially beneficial on exterior wood components that are routinely exposed to moisture and weather.
Residential Applications
- Rotten fascia boards
- Porch columns
- Window sills
- Door frames
- Pergolas
- Deck posts and beams
- Exterior trim
- Heavy timber framing
Commercial & Industrial Applications
- Historic restoration projects
- Apartment and HOA maintenance
- Hotels and resorts
- Marinas and waterfront structures
- Boardwalks
- Parks and public facilities
- Large structural timbers
- Utility structures
Before Wood Consolidant
Apply CuB Liquid after removing deteriorated wood and before applying wood consolidant to help prepare and protect the remaining sound wood.
Before Epoxy Repairs
Once the remaining wood has been treated and prepared, the repair can continue with the WRP epoxy repair system to permanently rebuild the missing wood.
Long-Term Protection
CuB Liquid helps preserve the remaining wood so the repaired area becomes part of a complete long-term wood restoration and maintenance strategy.
A Key Step Before Rebuilding
Every successful wood repair starts with properly preparing the remaining wood. After deteriorated wood has been removed, CuB Liquid helps treat the exposed wood before rebuilding the repair with WRP products. This preparation step supports long-term wood preservation while allowing the repair materials to restore the missing wood.
BEST PRACTICES
Mistakes to Avoid When Using CuB Liquid
When learning how to use CuB Liquid to protect wood, remember that it performs best when applied to properly prepared wood as part of a complete repair process. Avoiding these common mistakes can help maximize the effectiveness of both the preservative treatment and the WRP repair.
Leaving Decayed Wood Behind
Remove all soft, deteriorated, and structurally unsound wood before applying CuB Liquid. Preservatives are intended to protect remaining sound wood—not repair decayed wood.
Applying to Dirty or Wet Wood
Remove dust, loose fibers, dirt, and debris from the repair area. Follow the manufacturer's recommendations regarding application conditions to achieve the best penetration.
Skipping the Preparation Step
CuB Liquid is most effective when used immediately after the wood has been cleaned and before wood consolidant or epoxy repair materials are applied.
Ignoring Moisture Problems
Repair leaking roofs, flashing, gutters, plumbing, or other moisture sources before rebuilding the repair. Long-term repairs begin with correcting the cause of the damage.
Expecting CuB Liquid to Repair Wood
CuB Liquid is a wood preservative. It does not replace missing wood or restore structural strength. Use the WRP Wood Repair System to permanently rebuild damaged areas.
Skipping Protective Finishes
After the repair has been completed, prime, paint, or seal the repaired area as appropriate. Protective coatings remain an important part of long-term exterior wood maintenance.
The Best Results Come From Following the Complete WRP Process
Long-lasting wood repairs are achieved by following every step of the repair process: identify and eliminate the source of moisture, remove deteriorated wood, apply CuB Liquid to the remaining sound wood, rebuild the repair using the WRP Wood Repair System, and protect the finished repair with a quality exterior coating. Each step contributes to a durable, professional repair.
FREQUENTLY ASKED QUESTIONS
CuB Liquid FAQs
Here are answers to some of the most common questions about Genics CuB Liquid and how it fits into the WRP Wood Repair System.
What is CuB Liquid used for?
CuB Liquid is a ready-to-use copper and borate wood preservative designed to help protect exposed wood from fungal decay and wood-destroying insects before rebuilding the repair.
Does CuB Liquid repair rotten wood?
No. CuB Liquid is a preservative treatment. It does not rebuild missing wood or restore structural strength. The damaged wood should be repaired using the WRP Wood Repair System.
When should CuB Liquid be applied?
Apply CuB Liquid after all deteriorated wood has been removed and the remaining wood has been cleaned. It should be used before applying wood consolidant, epoxy repair materials, and finishing products.
Can CuB Liquid be used with the WRP Wood Repair System?
Yes. CuB Liquid complements the WRP Wood Repair System by treating the remaining sound wood before the repair is rebuilt with WRP products.
Is CuB Liquid ready to use?
Yes. CuB Liquid is supplied as a ready-to-use, water-based wood preservative. Follow the manufacturer's application instructions for proper use.
Can CuB Liquid help prevent future wood decay?
When used correctly as part of a complete repair and maintenance program, CuB Liquid helps protect remaining sound wood from fungal decay and wood-destroying insects. It should always be combined with proper moisture control and quality repair practices.
BUILD A LONGER-LASTING WOOD REPAIR
Start Every Wood Repair With Proper Protection
Long-lasting wood repairs begin with proper preparation. After removing deteriorated wood, treat the remaining sound wood with CuB Liquid before rebuilding the repair using the WRP Wood Repair System. Together they help create durable exterior wood repairs designed for years of service.