Our family-owned company has perfected “The Number One Choice” in adhesives for professionals and homeowners who demand unmatched strength and versatility in their adhesives. Our F-26® construction adhesive was the first to surpass the rigorous American Plywood Association AFG-01 standards, setting the benchmark for in-field gluing of plywood to wood flooring joists. With exceptional durability and superior performance in the harshest conditions, F-26® adhesive glue is the choice for those who require long-lasting, heavy-duty bonding solutions. Put it to the test and see why industry experts continue to “Stick with Leech.”
Leech F-26® Construction Adhesive
Premium Quality & Waterproof
The Amazing F-26® Premium Quality Waterproof Construction Adhesive Developed by Leech Products in 1930

F-26® Adhesive gives you the Adhesive Advantage for all projects!
F-26® Construction Adhesive Available Sizes:
- 1.25 fl. oz. carded tube: F26-32
- 10 fl. oz. cartridge: F26-33-12
- 28 fl. oz. cartridge: F26-34
F-26® Applications:
- Home Construction, remodel, repair
- Subfloors: Eliminates squeaks, long lasting, stays flexible over time. Covers approximately 275-325 sq. ft. of plywood floor installations per gallon of F-26®
- Metal stud walls
- Door saddles & thresholds
- Metal moldings, electrical outlet boxes, name plates, stair treads, signs, shelving brackets
- Fiberglass & fiber board
- Loose bricks, tile, simulated brick
- Plywood, particle board, paneling
- Felt & fiberglass pads, indoor & outdoor carpeting
- Decks & treated lumber
- Not recommended for polystyrene foam & tub enclosures. See our product F-13®
- Tilt-up concrete: Reveal strip attachment when molding
- Outdoor Rock, concrete, pavers
- Garage Doors: Metal brackets
F-26® Product Characteristics:
- Shear strengths in lab & field have shown that F-26® glue is the most powerful & longest lasting premium quality construction adhesive
- After applying product to one surface, join the two materials to be bonded, pull apart for 15-40 seconds, then re-join. Parts are held in place with only momentary pressure and have fast hold. Majority of bond is achieved after 24 hours, but will continue to strengthen for up to a week
- After cure bond will stay flexible & strengthen with age
- Bond not affected by vibration or flexing
- Fills gaps to bridge voids & irregularities
- Smears will not bleed through paint
- Storage capacity over 12 months
- Exceeds standards AFG-01, ASTM-C-557-73, FHA/HUD #60
Environmental Tolerance:
- Bonds even when items are wet and/or frozen
- Withstands climate extremes. Product can be used from 0⁰-120⁰F (-18⁰- 49⁰C). Finished product service temperature from -20⁰-150⁰F
- Not affected by humidity
Why Stick with Leech
Trusted Quality Since 1930: The Leech Adhesives Story
For nearly 100 years, Leech Adhesives has been a pioneer in the adhesive industry. G.C. Hilton founded the company with a simple mission—crafting reliable adhesives for small businesses across the Midwest. Today, under the leadership of the Barker Family, Leech Adhesives remains committed to innovation, producing high-performance outdoor construction adhesives that contractors and DIYers nationwide rely on. Proudly made in the USA, our products continue to set the standard for durability and strength