- Is PL 300 worth it over a general-purpose construction adhesive?
- If you are bonding foam board, yes. PL 300 is made for foam and dries clear, while many general adhesives are opaque and some solvent formulas can attack certain foams. For wood-to-wood framing, a standard PL Premium-type adhesive is usually the better pick.
- Does it really work outdoors?
- Loctite lists it for outdoor use, and the cured bond holds up to weather and temperature swings. Surfaces should still be clean and dry, and heavy panels need fasteners until the adhesive sets.
- How much does a 28 fl oz cartridge cover?
- Coverage depends on bead size. A 1/4-inch bead from a 28 fl oz cartridge runs roughly 30 to 35 linear feet, so plan one cartridge per few panels and keep a spare on hand.
- Will it bond foam board to concrete or masonry?
- Yes, it grabs well on porous surfaces like concrete, masonry and wood. Press the panel firmly and brace it until the adhesive cures, since solvent adhesives need some open time.
- Is it clear when it dries?
- Yes, the cured adhesive is clear, which is why it is used where a visible bead would be objectionable. It goes on white or milky and clears as the solvent evaporates.
- When is the best time to buy it?
- The $5.48 price at Home Depot as of November 4, 2026 is already near the bottom of its recent range. Stock up during spring and fall insulation sales, or buy multi-packs when you need several cartridges.
- Where is the Loctite PL 300 Foamboard Adhesive cheapest?
- At Home Depot, for $5.48, 72% under what the other stores charge, as of our latest check.
- Where can I buy the Loctite PL 300 Foamboard Adhesive?
- 4 stores we checked sell it, including Home Depot, Lowe's, Walmart, Amazon.
