Caulk & Sealants

Caulk & Sealants keep water, air, dust, and noise out of your home and jobsite. From stopping bathroom leaks to sealing window and door gaps, the right product prevents damage, boosts energy efficiency, and delivers a clean, professional finish. This category covers interior and exterior caulks, construction sealants, and the tools that help you apply them quickly and neatly.

Popular types and best uses:
- Acrylic latex caulk: easy water cleanup, low odor, paintable; great for trim, baseboards, crown molding, and small interior gaps.
- Silicone sealant (100%): waterproof, flexible, mildew-resistant; ideal for kitchens, baths, showers, glass, and tile; typically non-paintable.
- Polyurethane sealant: strong adhesion and movement; suited for siding, concrete, masonry, expansion joints, and outdoor weatherproofing.
- Hybrid/MS polymer: paintable, UV-stable, wide-temperature performance for demanding exterior joints.
- Butyl and roof/gutter sealants: cling to metal and stay flexible for flashing, gutters, and roof repairs.
- Acoustical sealant: reduces sound transmission around drywall and framing.

Helpful accessories and tools include dripless or ratcheting caulk guns, sausage guns for high-volume work, precision nozzles, joint-smoothing tools, scrapers and softeners for old caulk removal, backer rod and bond-breaker tape for proper joint geometry, and painter’s tape for crisp lines.

Application tips for pro results: clean, dry surfaces; remove failed material; match chemistry to the substrate; use backer rod on gaps over 1/4 in.; avoid three-sided adhesion; cut the nozzle at a 45° angle sized to the joint; apply in steady passes; tool the bead within the skin time; observe cure times (often 24–48 hours) before water exposure; apply within recommended temperatures. Look for mold-resistant and low-VOC formulas where needed.

Available in cartridges, squeeze tubes, and sausages—clear, white, color-matched, and paintable—caulk and sealants support bathroom caulking, kitchen silicone sealing, window and door air sealing, concrete crack repair, and roof and gutter maintenance. Proper sealing reduces drafts, lowers utility bills, improves indoor comfort, and protects finishes, making your paint, caulk & sealant projects last longer and look better.