Prevent water intrusion through any floor or wall



Waterproofing is one of the most critical applications for any surface. This is true for roof decks, bathrooms, showers, pools and many other applications. Semco’s integral waterproofing system has been tested under extreme conditions to be able to withstand water pressure even while being physically stretched. These properties allow the underlying performance to work while the surfaces aesthetic beauty is maintained.

Interior & Exterior Basement Waterproofing

The most common type of interior waterproofing is to use a sealant. Sealants are available in both liquid and paint form, and they can be applied to concrete, masonry, and wood. Sealants work by filling in the tiny cracks and pores in the basement walls and floors, making it more difficult for water to penetrate. Exterior waterproofing is a more complex process than interior waterproofing. Exterior waterproofing involves installing a drainage system around the foundation of the home. The drainage system consists of a series of pipes that collect water from the ground around the foundation and divert it away from the home.

Cinder block basement waterproofing, Sealing exterior cinder block walls, concrete block waterproofing

Concrete block is extremely porous. It acts like a sponge for moisture and has to be waterproofed to prevent moisture from entering into a home or building. Waterproofing the ‘dry’ side of a foundation or wall is referred to as negative-side waterproofing. Its major goal is to provide a barrier coat that prevents water from seeping through the wall and keeping the area dry.

With its lower cost and larger size options OSB (Oriented Strand Board) continues to gain market share in cladding and flooring applications.

With its lower cost and larger size options OSB (Oriented Strand Board) continues to gain market share in cladding and flooring applications. OSB still does not perform as well as plywood when it is exposed tomoisture. This can lead to mold and that is why knowing how to effectively waterproof OSB will help you on your projects.

Contractors: Use In New Construction

How To Waterproof Window Box, Window Waterproofing Solutions for New Construction

Windows are one of the most common parts of a home or building for water intrusion. It is therefore essential to properly waterproof a window box during construction. For window waterproofing in Florida, in particular, when building a block structure the porous block can easily wick water through a wall if the right materials and methods are not used.

Waterproofing Resurfacing Features


Seamless waterproofing

Any Surface

Both vertical and horizontal


Waterproofing while bridging cracks


Provided in any color


Liquid form and fabric form

We Do It All

Resurfacing for Tile, Concrete, Hardwood, Epoxy + more!

Semco Florida’s solid surface solutions product line includes four distinct surface treatment systems applicable to a variety of environments and needs. Semco’s Remodel Without Removal is a resurfacing product that allows you to remodel existing surfaces without having to remove the old surface material. The remodel without Removal system can resurface tile and grout, stone, wood, concrete, vinyl, epoxy and more.