WindsorONE Protected Shiplap combines sustainably harvested radiata pine with patented Tru-Core protection for 30-year coverage against rot, fungal decay, and termites. Unlike competitors relying on LOSP solvents, Tru-Core technology delivers protection without the harsh chemicals.
The Protected line offers two models: WORS6 (3/4” × 5-1/2” × 16’) and WORS8 (3/4” × 7-1/4” × 16’). Both feature reversible smooth/rough sides, finger-jointed and edge-glued construction, and factory-applied three-coat 100% acrylic latex primer. Applications span exterior soffits, porch ceilings, interior accent walls, and interior ceilings.
Specifications and Models
The Protected Shiplap line consists of two standard sizes:
| Model | Nominal Size | Actual Dimensions | Length |
|---|---|---|---|
| WORS6 | 1×6 | 3/4” × 5-1/2” | 16 ft |
| WORS8 | 1×8 | 3/4” × 7-1/4” | 16 ft |
The 3/4-inch thickness provides structural stability while the finger-jointed and edge-glued construction ensures boards stay straight and true. Each board features a reversible design with smooth finish on one side and rough texture on the other, letting contractors match project aesthetics without ordering separate products.
WindsorONE Protected S4S boards, casing, and base boards complement the shiplap for complete trim packages.
Installation Requirements and Warranty Protection
Proper installation determines warranty coverage. Field-cut ends MUST receive primer treatment — skip this step and void the 30-year protection. Maintain 6-inch clearance above grade and 2-inch clearance above roofing. Use stainless steel or galvanized fasteners exclusively.
The 30-year limited warranty covers rot, fungal decay, and termite damage — substantial coverage for Montana’s freeze-thaw cycles. Gold Indoor Air Quality Rating certification matters for energy-efficient homes where air exchange rates drop.
Performance Against Alternatives
Compared to natural cedar, Protected Shiplap delivers superior dimensional stability with included rot protection warranty. Cedar’s natural oils provide some resistance, but warranties rarely match WindsorONE’s 30-year coverage. Against PVC alternatives, Protected Shiplap maintains authentic wood appearance without thermal expansion issues that plague synthetic materials in Montana’s temperature swings.
The factory-applied three-coat primer outperforms job-site priming. Consistent mil thickness, complete coverage including edges, and controlled application conditions produce superior paint adhesion.
Customer reviews confirm the quality justifies the premium price, though they emphasize careful attention to priming cut ends. Contractors who follow installation specs report long-term satisfaction.
Frequently Asked Questions
Q: Can WindsorONE Protected Shiplap handle Montana’s temperature extremes?
A: The finger-jointed and edge-glued construction provides dimensional stability, while the 30-year warranty against rot and decay covers freeze-thaw damage. Unlike PVC products that expand and contract with temperature changes, Protected Shiplap maintains stable dimensions.
Q: What makes Tru-Core different from standard pressure treatment?
A: Tru-Core protection contains no LOSP solvents, eliminating the chemical smell and handling concerns of traditional treated lumber. The waterborne protection penetrates the wood core rather than sitting on the surface.
Q: Does the reversible design affect structural integrity?
A: Both the smooth and rough sides receive identical finger-jointing, edge-gluing, and three-coat primer treatment. The reversible feature adds installation flexibility without compromising strength or protection.
Q: How critical is the 6-inch ground clearance requirement?
A: Ground clearance requirements directly tie to warranty coverage. Soil moisture wicks into wood through capillary action. Even treated lumber needs separation from ground contact to prevent warranty voids.
Q: Can Protected Shiplap work for bathroom ceilings?
A: Interior ceiling applications are approved uses, and the Gold Indoor Air Quality Rating confirms safety for interior spaces. Tru-Core protection guards against mold, making it suitable for higher-moisture rooms with proper ventilation.
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