Joist Protector
The Rotbloc Joist Protector safeguards wooden joists and beams from rot and water ingress in deck, fence, and structural applications. Designed for simplicity, it creates a waterproof seal that prevents rot in areas prone to standing water or direct ground contact.
Constructed from the same industrial-grade polymers used in our utility protection systems, the Rotbloc Joist Protector forms a robust hydrophobic shield that blocks moisture infiltration at key structural junctions. This barrier technology significantly reduces the risks of rot, corrosion, and fungal decay while maintaining air permeability to allow wood to breathe naturally.
Our product has been validated through laboratory water-penetration tests, UV resistance simulations, and real-world deck installations. The result is a maintenance-free system that extends structural integrity by decades, preventing the hidden damage that often leads to costly rebuilds or safety hazards.
The Joist Protector’s innovative design simplifies installation while ensuring a perfect seal between wood components. It conforms to various beam sizes and can be easily trimmed without compromising performance. Ideal for both new construction and restoration projects, it enhances the lifespan of decks, pergolas, and outdoor structures by shielding them from environmental stressors.
Every unit is recyclable, aligning with sustainable building standards. By protecting the areas most vulnerable to water exposure, Rotbloc enables builders to deliver durable, long-lasting results with minimal environmental footprint.
EXTENDS POLE LIFE
Increases service life by decades and reduces replacement frequency.
Prevents moisture, fungi, and insects from attacking the wood’s surface.
ENVIRONMENTALLY SAFE
Prevents chemical migration and preserves surrounding soil and water.
Engineered and produced in Bend, Oregon using 100% recycled materials.
U.S. patented since 2013 and tested by independent research institutions.
ZERO MAINTENANCE
Once installed, it protects continuously — no reapplication, no downtime.
Whether you’re protecting a single fence post or an entire utility network, ROTBLOC delivers reliable, field-tested protection — from the ground up.
