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.
Before and after of a basement block wall — left damp and water-stained, right sealed dry with grey membrane
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 applying SEMCO Liquid Membrane waterproofing coating along the seams of a residential metal roof
waterproofing

Water-Based Membrane or Silicone-Based Coating: Which Belongs on a Metal Roof

Silicone-based coatings and rubber-based coatings both work on metal roofs, but each comes with real trade-offs in odor, cure conditions, and flexibility. Here is how a water-based liquid membrane ...
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...
Basement cinder block wall waterproofed with grey SEMCO Liquid Membrane, product pail and roller on the floo
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.
Applying SEMCO Liquid Membrane to waterproof a concrete pool shell
DIY

How to Waterproof a Concrete Pool the Right Way

Step-by-step guide to waterproofing a concrete pool: prep, crack repair, coat application, curing, and water-testing, so it stays watertight for years.
omeowner in a flannel shirt rolling white SEMCO Liquid Membrane waterproofing onto a basement block wall
DIY

What Is a Liquid Waterproofing Membrane? The Complete Guide

Liquid waterproofing membrane explained: what it is, how it works, the types available, where it's used, and how to apply it yourself.