Waterproofing made easy

Professional-grade membrane at an accessible price

Exact details and fit

Options and variants for varied waterproofing needs

Brand
semcoworks
Category
Business & Industrial
Options
Color: Semi-Clear, White, Rockslide Grey, Monday Grey, Black Pearl, Cove Blue, Sapphire Bay, Sandy Beige, Honey Maple, Arizona Sun
Select Your Size
1 Pint, 1 Quart, 1 Gallon, 5 Gallon
Variants include Semi-Clear / 1 Pint, White / 5 Gallon, Rockslide Grey / 1 Quart, and others

What arrives

One SEMCO Liquid Membrane™ Waterproofing in the selected color and size option.

For finishers and DIY users

Compatible surface-care step in finishing workflows

Use SEMCO Liquid Membrane™ Waterproofing only on compatible material. Clean or prep the surface, test on a sample or hidden area, and follow application and dry-time guidance.

Best for buyers who need a Business & Industrial waterproofing membrane with a broad color and size range

Use only on surfaces and materials listed as compatible by the manufacturer or supplier. Test before combining with unfamiliar coatings, cleaners, sealers, resins, or finishes.

Always follow the manufacturer's instructions and safety guidance.

Shipping and returns

Manage your order confidently

Shipping rates and delivery estimates appear at checkout. Most orders ship within 1-5 business days, but timing varies.

Shipping rates and delivery estimates are shown at checkout. Most partner-brand orders ship in 1-5 business days when inventory is available, but timing can vary by supplier, destination, item type, and carrier. Multi-brand orders may arrive in separate packages.

Returns accepted within 30 days of delivery. Contact Resin Society for assistance with damaged, defective, or incorrect items.

Return requests are accepted within 30 days of delivery. Damaged, defective, incorrect, or missing items are fully supported; contact Resin Society first and we will coordinate directly with the brand. Change-of-mind returns are reviewed according to the supplier's return policy and item condition.
SEMCO Liquid Membrane™ Waterproofing

Quiet confidence for hard‑working surfaces

From damp, tired walls to a calm, unified plane—one thoughtful layer and the space exhales.

Make room for dry

A cleaner line between weather and home

Color, finish, and seal in one sweep

Moisture creeps in slowly—streaks at the base of a block wall, hairline shifts that telegraph through tile, the faint powder of efflorescence that never quite washes away. SEMCO Liquid Membrane brings those surfaces back to a single tone and shuts the door on the intrusion. The hybrid elastomer blend moves with the surface, spanning small gaps while leaving a uniform, finished look. Spaces that once felt high‑maintenance become straightforward again.

Surfaces that stay composed

When the envelope of a space holds steady, life inside does too. A wall by the pool, a patio, or a utility room reads cleaner and feels calmer when water no longer writes its own story on the finish. With a ready‑to‑use membrane that coats, colors, and seals, the work narrows to one considered step and the result looks intentional.

For the ones who mind the details

Homeowners, builders, and renovators who want a professional, uniform waterproof finish without a complicated system.

Where it belongs

Roll, brush, or spray onto concrete, masonry, metal, or wood where you need a colored, finished waterproof layer.
  • Surface prep
  • Finishing
  • Cleaning and sealing
  • Material care
semcoworks brand cover

About semcoworks

Innovators in surface engineering since 1991

Resin Society carries semcoworks for cleaners, sealers, coatings, and surface products. The line is here for customers planning material prep, protection, and care around home and project surfaces.
Explore semcoworks

Common questions

What you need to know before purchase

What does SEMCO Liquid Membrane do in a single application?
It acts as a waterproofing and anti‑fracture membrane while adding color and a finished look.
How is it applied?
You can use a roller, brush, or spray gun, as shown on the packaging.
Which surfaces can it cover?
The label indicates use on concrete, masonry/block, metal, and wood.
Is it ready to use out of the pail?
Yes, it is a single‑component, ready‑to‑use membrane.
What kind of results should I expect visually?
A uniform, colored finish that refreshes weathered areas, as shown in the before/after wall example.