The 640-4 Road Model is your go-to tool for fast, precise backer rod installation in large-scale sealing jobs. Designed to handle rough and abrasive surfaces, its epoxy-filled, reinforced resin handle provides long-lasting durability in field conditions. Whether you're prepping saw cuts, road joints, or pre-caulking gaps, this heavy-duty applicator delivers consistent, puncture-free results every time.
Product Details: Unlike standard models, the 640-4 is purpose-built for use on horizontal surfaces such as pavements, driveways, and tilt-up joints. Its fully adjustable design ensures you can place foam rod up to 1” deep with total confidence.
Depth Control: Comes with four interchangeable insertion wheels to match common joint widths (1/8”, 1/4”, 3/8”, 1/2”). Simply swap the wheel to match your job. No more guessing or damaging foam during install.
Compatible Handle: Fits standard threaded broom handles or painter poles like the 876-1 or 876-2. Ideal for extended reach on driveways or factory floors without bending or strain.
Durability & Portability: Weighing just 1.1 lbs (0.5 kg), the tool is lightweight yet built for harsh conditions, with a compact 203 mm × 102 mm × 127 mm footprint.
Q: What kind of foam backer rods can I use with this tool?
A: The 640-4 Road Model is compatible with most standard foam backer rods, including closed-cell, open-cell, and hybrid variants. Select the matching insertion wheel for your joint size.
Q: How do I adjust the insertion depth?
A: The kit includes four wheels (1/8", 1/4", 3/8", 1/2"). Swap the wheel based on joint width, and manually adjust handle pressure to insert rod up to 1” deep.
Q: Can I use any extension pole?
A: Yes, it accepts any standard threaded broom handle or painter's pole. We recommend Adheseal 876-1 or 876-2 for best fit and durability.
Q: Will it work on vertical surfaces?
A: No. This model is optimised for horizontal surfaces like roads, driveways, and slab joints. Use handheld inserters for vertical joints.
Q: Does it puncture the foam rod?
A: No. It’s specifically designed to set the rod without puncture or tearing, which is critical for forming proper sealant backing.