News & Resources - Lotfix Sealant

Why Does PU Foam Shrink or Crack After Curing? PU foam may shrink or crack after curing due to wrong product choice, overfilling, poor moisture control, unsuitable surfaces, or improper curing cond... 2026.05.12

Fire Retardant PU Foam in Door, Window, and Penetration Sealing Fire retardant PU foam helps fill door, window, and penetration gaps, but buyers must match B1/B2 ratings, test reports, and project requirements.... 2026.05.10

Winter Construction Guide: Sealant and Foam Use in Cold Weather Use sealant and PU foam in cold weather by controlling storage, surface dryness, application temperature, curing time, and winter jobsite protection.... 2026.05.09

How to Use Spray Foam for Roof, Pipe, and Tank Insulation Use spray foam on clean, stable roof, pipe, and tank surfaces to form continuous insulation over curves, joints, gaps, and irregular areas.... 2026.05.08

PU Adhesive Foam for Insulation Boards: Practical Jobsite Uses PU adhesive foam helps fix insulation boards faster, reduce mixing work, fill small gaps, and improve clean jobsite handling compared with cement-base... 2026.05.07

How to Seal Expansion Joints Around Windows and Doors Seal window and door expansion joints with low expansion PU foam inside the gap, then apply silicone sealant on the surface for waterproofing and air... 2026.05.06

What Is the Right Sealant for Aquarium Glass Repair? Use an aquarium-safe silicone sealant for glass repair because it bonds glass-to-glass, resists water after full cure and avoids harmful additives.... 2026.05.05

How to Choose Sealant for Bathroom Mirror Installation Choose a mirror-safe neutral cure silicone sealant for bathroom mirror installation to protect the backing, resist moisture and bond securely.... 2026.05.04

Best Sealant for Gutters, Flashings, and Down Pipes The best sealant for gutters, flashings and down pipes is a neutral cure roof and gutter silicone sealant with strong adhesion, flexibility and weathe... 2026.05.03

What Sealant Should Be Used for Metal Roof Leaks? Use a neutral cure roof and gutter silicone sealant for metal roof leaks because it bonds to metal, resists UV and rain, and stays flexible.... 2026.05.02

Best Silicone Sealant for Curtain Wall Perimeter Joints The best silicone sealant for curtain wall perimeter joints is a neutral cure weatherproof sealant with strong adhesion, movement capability and UV re... 2026.05.01

How to Build a More Complete Sealant Product Line for Your Market Learn how to build a complete sealant product line with core products, specialty items, SKU control, and smart expansion into PU foam or two-part syst... 2026.04.30