SEMCO field notes

liquid membrane guides.

Prep, application and troubleshooting for basements, roofs, showers, pools and more, written by the team that makes SEMCO.

6 articles

Interior basement wall coated with SEMCO Liquid Membrane water-based waterproofing membranebasement

Nov 11, 2026 · 6 min read

Basement Waterproofing Membrane: Water-Based vs Silicone-Based vs Rubber-Based (Complete Comparison)

Compare water-based, silicone-based, and rubber-based basement waterproofing membranes on cure time, elongation, odor, and cost so you pick the right one.

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Applying SEMCO Liquid Membrane as a shower liner before tiling, a confined space where odor matters mostcomparison

Nov 2, 2026 · 5 min read

Why Does My Waterproofing Membrane Smell So Strong? Water-Based vs Rubber-Based Odor Compared

Waterproofing membrane smell explained: why water-based and rubber-based coatings smell different, how long odor lasts, and when it signals a real problem.

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Inspecting basement wall for freeze damage before winterbasement

Nov 2, 2026 · 5 min read

Basement Waterproofing Before Winter: A 7-Point Freeze-Thaw Checklist

A 7-point freeze-thaw checklist for basement waterproofing before winter: grading, cracks, reinforcement and a flexible membrane before the ground freezes.

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Crawl Space Waterproofing and Encapsulation: A DIY Liquid Membrane Guidebasement

Sep 30, 2026 · 5 min read

Crawl Space Waterproofing and Encapsulation: A DIY Liquid Membrane Guide

A full DIY crawl space waterproofing and encapsulation walkthrough: sealing foundation walls and cracks, installing the ground vapor barrier, handling vents and...

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Resealing Your RV Roof Before Winter Storage: Water-Based Membrane vs Rubber-Based Coatingscomparison

Sep 30, 2026 · 5 min read

Resealing Your RV Roof Before Winter Storage: Water-Based Membrane vs Rubber-Based Coatings

Should you reseal your RV roof before winter storage, and is a water-based membrane or a rubber-based coating the better call? Here's...

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SEMCO Liquid Membrane applied to an interior basement wallbasement

Sep 23, 2026 · 5 min read

SEMCO Liquid Membrane vs Rubber-Based Waterproofing Coatings: Which Is Better for Basements and Foundations?

SEMCO Liquid Membrane vs rubber-based waterproofing coatings for basements and foundations: odor, cure time, flexibility, and cost compared side by side.

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