SEMCO Liquid Membrane
SEMCO Liquid Membrane
SEMCO Liquid Membrane
SEMCO Liquid Membrane
SEMCO Liquid Membrane
SEMCO Liquid Membrane

SEMCO Liquid Membrane

✔ 100% satisfaction guarantee

$189.61 - $809.05
/
The Contractors Site

Select an option to add this to your cart.

Protect concrete, masonry, wood, metal, floors, walls, foundations, and other compatible surfaces with SEMCO Liquid Membrane™, a professional-grade, water-based waterproofing and anti-fracture coating. The flexible membrane forms a seamless protective barrier that helps prevent water intrusion, seal cracks, and protect surfaces from moisture damage.

SEMCO Liquid Membrane is designed for application by brush, roller, or spray. It forms a durable, flexible coating for interior and exterior projects, including basement waterproofing, foundation walls, decks, balconies, bathrooms, showers, pool areas, concrete surfaces, and general leak and crack repair.

Product Features

  • Professional-grade liquid waterproofing membrane.
  • Water-based, single-component formula.
  • Helps seal cracks and prevent water penetration.
  • Flexible coating helps accommodate minor substrate movement.
  • Suitable for concrete, masonry, wood, metal, and other compatible surfaces.
  • Applies by brush, roller, or spray.
  • Black Pearl colour with a dark charcoal-grey appearance.

Typical Applications

  • Basement and foundation waterproofing.
  • Concrete and masonry moisture protection.
  • Waterproofing walls, floors, decks, and balconies.
  • Crack and leak repair.
  • Shower and bathroom waterproofing.
  • Pool and below-grade applications when installed according to SEMCO specifications.
  • Waterproofing wood, metal, and other suitable substrates.
  • Anti-fracture protection beneath compatible finish materials.

Coverage

One gallon covers approximately 200–250 sq. ft. with two coats, depending on surface porosity, application method, and substrate condition. Porous or heavily textured surfaces may require additional material. Choose the 5 gallon pail for larger projects.

Available in 1 Gallon Pail and 5 Gallon Pail sizes.

The Contractors Site
TCS Loft

Available for pickup

Usually ready in 24 hours

SEMCO Liquid Membrane
$189.61 - $809.05
SEMCO Liquid Membrane
1 Gallon Pail
$189.61 /each
SEMCO Liquid Membrane
5 Gallon Pail
$809.05 /each
Total:
SEMCO Liquid Membrane

Available for pickup

Usually ready in 24 hours

TCS Loft

Available for pickup

Usually ready in 24 hours

20 Maplecrest Lane
Brantford ON N3R 7V1
Canada

+19056388898

You may also like

Recently viewed

Great quality at fair price.

The fasteners I bought from here are solid and reliable. You can tell these are contractor-grade products, not cheap knock-offs.


Amanda R., Builder

Exactly what I needed.

The Blind Mark Locator worked perfectly for my drywall project. No guessing, no mistakes. Makes the job fast and professional.

Chris L., Home Improvement Contractor

My go-to supplier now.

I love that I can find everything in one place. Composite decking, tapes, adhesives—all quality stuff. This site is a lifesaver for contractors.

Daniel P., Renovation Specialist

Icon of a delivery truck with 'FREE' text on a white background

Free Shipping

Shield icon with a dollar sign in the center on a white background

High-Quality-Material

Icon of a headset with a speech bubble containing three dots on a white background

Contact Us

Black icon of a ribbon with a check mark on a white background

100% Secure Payments

Frequently Asked Questions

We specialize in high-quality tools for calculating, measuring, leveling, and locating, essential for contractors and professionals in the construction industry. Our inventory includes laser measures, levels, stud finders, measuring tapes, and more.

Yes, our tools are designed to meet the needs of both professional contractors and DIY enthusiasts.

Our tools are precision-engineered for accuracy, meeting industry standards for professional use.

Our tools are built with high-quality materials to ensure they can withstand tough working conditions.

Yes, most of our products come with a manufacturer’s warranty. Please refer to the product description for specific warranty details.

Simply browse our product catalog, select the tools you need, and add them to your cart. Once ready, proceed to checkout, where you can complete your purchase securely.

Absolutely! Our customer service team is available to provide recommendations and answer any questions you may have about our tools.