Hydroblok is made from Extruded Polystyrene, which is a high-density foam product, much stronger than styrofoam. As a closed-cell foam, it won't allow moisture or vapor penetration. HydroBlok products are reinforced with a coating of fiberglass mesh and cement for added strength and durability.
How it's Waterproof
Some other waterproofing systems rely on a waterproof coating. If you scratch or dent the surface of other waterproofers, you have to reseal all damaged spots. HydroBlok's polystyrene core is completely waterproof, and it's concrete coating allows for a better tile bond. Even if you scratch off the coating or score the panels, they do not lose their watertight nature.
HydroBlok is rated for floor use in a commercial setting. That means that it's denser and stronger than other foam materials and can withstand as much weight as a standard cementboard or backerboard.
Unique Infinity-Style Linear Drain Design
Do you want an invisible drain? Covered in tile with a small, business card-sized hatch for cleaning access, your soap and water flow into a discreet seam at the edge of your shower. No metal drain cover or excess grout lines.
The drain unit itself is constructed from durable ABS. Unlike stainless steel line drains, there is no potential for corrosion and smells developing over time. ABS’s unique non-stick properties ensure that everything glides down the drain and out your pipes.
Check out this gallery of installed showers with HydroBlok line drains!
Important notes on Waterproofing
Water goes where it wants
H2O is a determined little molecule; if it can find a way to get through your grout, past your tile, and into the structure of your house, it will. That's why waterproofing your shower installation is so important: if you don't do the job right, the water damage four to eight years down the road may be irreparable.
One common misconception is that if the building materials are tightly set, then water can't get through. Water will use even the tightest cracks and crevices to creep and work its way out in what's known as the Wick Effect. Each time the water creeps in (each time you take a shower, for example), it will open the crevice a little more and leak exponentially faster. The smallest crack or unsealed area will spell disaster. That's why you need a completely watertight system that will allow for no absorption or leaks.