SEMCO Liquid Membrane applied to a real interior basement wall
DIY

Why Some Waterproofing Membranes Smell So Strong (and How to Tell If It's Actually a Problem)

A strong tar or kerosene smell after waterproofing usually means an asphalt-based or rubberized coating was used. Here's what causes it, whether it's a problem, and how odor compares across waterpr...
SEMCO Liquid Membrane applied in a shower, compared against silicone-based coatings for waterproofing
bathroom

Water-Based Membrane vs Silicone-Based Coating: Which Belongs in a Shower

Silicone-based coatings and a water-based liquid membrane both waterproof a shower before tile. Here's how they compare, by scenario, cure time, and odor.
DIYer applying SEMCO Liquid Membrane around an exterior window frame to stop a rain leak
DIY

Window Leaking During Rain? How to Waterproof Windows From the Outside Without Replacing Them

A leaking window during rain rarely means a bad window. Here's how to waterproof it from the outside with a flexible membrane, no replacement needed.
SEMCO Liquid Membrane applied to a basement wall ahead of fall rains
basement waterproofing

Basement Waterproofing Checklist: 7 Steps Before Fall Rains Hit

A 7-step basement waterproofing checklist to run before fall rains hit: cracks, the floor-to-wall joint, grading, humidity, and when to reapply membrane.
SEMCO Liquid Membrane applied as a water-based waterproofing membrane on a real interior basement wall
basement waterproofing

Water-Based vs Silicone-Based Basement Waterproofing: The Full Comparison

Water-based liquid membrane and silicone-based coatings both waterproof a basement, but they're built for different jobs. Here's the full comparison, by scenario.
DIYer rolling SEMCO Liquid Membrane along a metal roof seam to stop a leak
DIY

Metal Roof Leaking? The Real Reasons Coatings Fail (and How to Fix It for Good)

Metal roof still leaking after a coating job? Here is why fasteners, seams, and thin coatings actually fail, and how to stop it for good.
DIYer rolling SEMCO Liquid Membrane over taped drywall seams in an unfinished basement
basement waterproofing

Do You Really Need to Waterproof Drywall? Every Question Answered

Is drywall really waterproof? Get straight answers on green board, cement board, and how to seal drywall seams yourself with a water-based membrane.
pool-deck-sandy-beige-titan-shield-progress
concrete

Pool Deck Cracking Every Winter? How to Waterproof and Crack-Proof It for Good

Pool decks crack every winter for one repeatable reason: water gets into the concrete's pores and hairline cracks, freezes, expands, and pushes the crack a little wider, then does it again the next...
SEMCO Liquid Membrane applied to a real interior basement wall during a DIY waterproofing project
basement waterproofing

Basement Waterproofing Membrane: How to Choose One That Won't Fail (2026 Buyer's Guide)

What to check before buying a basement waterproofing membrane: elongation, cure time, VOC, and cost per square foot. A 2026 buyer's guide.