SEMCO field notes
Roof guides.
Prep, application and troubleshooting for basements, roofs, showers, pools and more, written by the team that makes SEMCO.
11 articles
concreteHow to Waterproof a Concrete or Flat Roof Before Winter Rain
Concrete, built-up, and torch-down roofs leak differently than pitched roofs. Here's how to prep, seal seams, and coat a flat roof before...
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comparisonResealing 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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roofMetal Roof Leaking? How to Find and Seal It Before Winter Rain
Metal roof leaking when it rains hard? Here's how to find the real leak point and seal it yourself with a flexible...
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roofMetal 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...
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comparisonWater-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....
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roofMastering Liquid Waterproofing on Old Bitumen Substrates: Renovation Without Demolition
For property owners, facility managers, and roofing contractors, aging flat roofs present a recurring and expensive challenge. Historically, traditional rolled roofing and...
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roofCool Roofs amp Energy Efficiency: Liquid Membranes for Heat Reduction
Optimizing building thermodynamics requires treating the roof as an active thermal barrier, not just a passive waterproofing layer. The application of a...
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roofEXPLORING ROOFING MATERIALS : A GUIDE TO SEMCO LIQUID MEMBRANE SOLUTIONS
When it comes to roofing materials, homeowners are faced with a myriad of options, each with its own benefits and drawbacks. From...
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roofRV Roof Replacement Cost vs Resealing: The Real 2026 Numbers
What a full RV roof replacement actually costs by material, when resealing instead makes sense, and a real materials cost breakdown for...
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roofSHIELDING YOUR INVESTMENT : THE KEY BENEFITS OF WATERPROOF SEALANTS FOR METAL ROOF MAINTENANCE
Your metal roof is a robust guardian for your home, providing durability and energy efficiency. However, even the sturdiest roofs need a...
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roofHow to Find and Fix a Leak in a Metal Roof: A Complete DIY Guide
To find and fix a leak in a metal roof, inspect the panel body, the seams and fasteners, roof penetrations, and the...
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