Sansin End Seal
$63.99 – $290.99
Sansin End Seal is a breathable, water-repellent sealer that protects the cut ends of logs, timbers, and lumber from moisture loss, checking, and splitting. Applied in one coat, it stabilizes end grain and prevents blue stain, even on damp wood.
Sansin End Seal
Protective Sealer for Crosscut Ends of Logs, Timbers, and Lumber
Sansin End Seal is a penetrating water-borne treatment designed to prevent checking, splitting, and moisture loss from freshly cut ends of wood. Applied to green, damp, or seasoned wood, it forms a durable, breathable barrier that stabilizes exposed end grain by reducing rapid water evaporation and absorbing moisture. End Seal offers exceptional performance in just one coat and is ideal for log homes, dimensional lumber, and engineered wood components like CLT.
What Makes Sansin End Seal Unique?
End Seal is specifically engineered to control moisture movement through end grain—the most vulnerable part of any wood product. Its advanced formulation reduces warping, checking, blue stain, and sap stain while promoting dimensional stability. Unlike wax-based sealers, End Seal is breathable, repels insects, and allows the wood to dry naturally without trapping moisture. It can be applied even on damp wood, making it a go-to solution on the jobsite or at the mill.
Key Benefits
- Seals end grain to help prevent rapid moisture loss and checking
- Penetrates deeply for long-term dimensional stability
- Reduces warping, shrinking, and end splits
- Breathable, water-repellent, and insect resistant
- Reduces blue stain and sap stain formation
- UV-resistant and environmentally friendly
- Low VOC and easy soap-and-water cleanup
Where to Use
- Fresh-cut ends of logs and timbers
- Cross Laminated Timber (CLT)
- Sawn dimensional lumber
- Deck and fence board ends
- Hardwood and softwood lumber
Application Notes
Surface Preparation Requirements
- Apply to fresh cut wood before seasoning or kiln drying
- Ensure surface is clean and free of dirt, dust, wax, or coatings
Application
- Apply using brush, roller, or sprayer
- Apply evenly to a wet film thickness of 8–10 mils
- Allow to dry 6–12 hours before handling
- Reapply after 24 hours if needed
- Do not allow product to freeze
Coverage
| Surface Condition | Estimated Coverage per U.S. Gallon |
|---|---|
| Sawn or rough-cut wood ends | 200 sq. ft. @ 8 mils wet |
Maintenance Required
Inspect end grain areas annually for signs of checking or moisture loss. Reapply as needed, especially in high exposure or after re-cutting ends. Store product in a temperature-controlled space and stir before reuse.
Frequently Asked Questions
- What does End Seal do?
- It slows moisture loss and helps prevents checking, splitting, and staining on the end grain of wood products.
- Can it be used on damp wood?
- Yes, it can be applied directly to green or damp lumber before drying.
- How long does it take to dry?
- Dries to touch in 6–12 hours. Allow 24 hours between coats.
- Is End Seal breathable?
- Yes, it allows moisture vapor to escape while repelling water from entering.
- Can it be used on CLT or engineered wood?
- Yes, it’s ideal for CLT and other composite wood products where end grain is exposed.
- Does it contain VOCs?
- It has extremely low VOCs (12 g/L actual) and is water-borne and eco-friendly.
- What kind of color is it?
- Milky beige when wet; available in standard and custom tints to blend with wood tone.
- Can I apply it with a sprayer?
- Yes, brush, roller, or sprayer application is acceptable as long as film thickness is consistent.
- Will it resist UV damage?
- Yes, it offers UV protection to exposed end grain wood fibers.
- How should I dispose of waste?
- Soak used rags in water and seal in a metal container to avoid spontaneous combustion.
Downloads
Stain Calculator
Use this tool to estimate how much product you'll need.
| Weight | N/A |
|---|---|
| Dimensions | N/A |
| Select Size | 5 Gallons ,1 Gallon |
| Brand | Sansin |
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