How it Works

The HYDRO-BLOK Shower System features a closed-cell, HCFC-free, XPS foam core and a custom engineered polymer-modified cement coating. Once installed using our Joint Sealant you get a fully waterproof line of shower pans, wallboards and accessories that are lightweight, strong and ready for your tile or stone creations and all backed by our Lifetime Limited Warranty.

HYDRO-BLOK products are ICC-ES certified.

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Standard System Components

HYDROBLOK center drain shower pan

Center-Drain Shower Pans

All HYDRO-BLOK Shower Pans include a stainless steel drain cover and tray, mesh tape, putty knife, construction plugs, water test ball and complete installation instructions. Classic Shower Pans include a solid brass drain kit and customizable riser to accommodate varying tile thicknesses.

Our NEW Low-Profile Shower Pans can be combined with our Floor Lowering Kit for curb-less entry and include our drain hub with both lateral and height adjustment to accommodate tile layout and thickness.

HYDROBLOK single slope shower pan

Single Slope Shower Pans

HYDRO-BLOK Single Slope shower pans together with the HYDRO-BLOK Linear Drain by ebbe are a curbless shower solution. A nearly hidden drain along with the ability to use any size of tile or stone on your shower pan, allow for unique and elegant designs.  The Linear Drain can be placed anywhere in a shower as it is easily customized to fit any shower space or size for either residential or commercial installations.

Single Slope Shower Pans are sloped toward the first dimension listed. Thin Single Slope Shower Pan models allow installation where only the drain area of the subfloor needs to be lowered.

Single Slope Shower Pans

3′ x 5′ 5′ x 3′ 6′ x 4′ 4′ x 6′

Thin Single Slope Shower Pans

3′ x 5′ 5′ x 3′ 6′ x 4′ 4′ x 6

Single Slope Shower Pans Extensions

6′ x 1′ 6′ x 1′ (thin) 1.5′ x 6′ (side)

HYDROBLOK wallboard

Wall Panels and Backer Boards

HYDRO-BLOK Wallboard makes installing a HYDRO-BLOK shower simple. It is lightweight and easily cut with a utility knife or power saw and attached to the studs with our screws and washers.

HYDRO-BLOK Building Board allows you to easily create stunning custom shower features such as benches in no time at all. Our 1/4″ Board can be used for waterproofing your entire bathroom floor when installing curb-less entry showers.

Wallboards & Building Boards

1/4 inch wallboard 3′ x 5′
1/2 inch wallboard 3′ x 5′ 48″ x 64″
5/8 inch wallboard 3′ x 5′
1 inch building board 3′ x 5′
1 and 1/2 inch building board 25″ x 48″
2 inch building board 48″ x 60″ 44″ x 96″

Single Slope Shower Pans

3′ x 5′ 5′ x 3′ 6′ x 4′ 4′ x 6′

Thin Single Slope Shower Pans

3′ x 5′ 5′ x 3′ 6′ x 4′ 4′ x 6

Single Slope Shower Pans Extensions

6′ x 1′ 6′ x 1′ (thin) 1.5′ x 6′ (side)

Wallboards & Building Boards

1/4 inch wallboard 3′ x 5′
1/2 inch wallboard 3′ x 5′ 48″ x 64″
5/8 inch wallboard 3′ x 5′
1 inch building board 3′ x 5′
1 and 1/2 inch building board 25″ x 48″
2 inch building board 48″ x 60″ 44″ x 96″

Curb-less Shower Entry with the HYDRO-BLOK Linear Drain

Have you dreamed of a luxurious open concept shower with seamless transitions from your bathroom floor directly into your shower with no barrier or curb?

HYDRO-BLOK Single Slope shower pans together with the HYDRO-BLOK Linear Drain by ebbe are your solution. Create unique and elegant showers with no metal drain cover on the shower floor and use any size of tile or stone on your shower pan. With only a 1/4″ drain channel visible, your shower has the look and feel of luxury and elegance!

This innovative drain system can be placed on any shower wall and offers many installation options such as extended drain channels, joining two drains together, hidden ‘IN-Shadow’ drain channels and our Floor Lowering Kit to easily lower your existing subfloor if needed. See more details on our product page or contact your HYDRO-BLOK representative today.

HB HIW Linear Drain

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Curb-Less Installation Options for any Location

HYDRO-BLOK Standard Single Slope Shower Pans together with Ebbe’s floor lowering clips (patent-pending) allow your entire shower area to be set up for a barrier free installation.

HYDRO-BLOK Thin Single Slope Shower Pans require only the drain area to be lowered to provide a simple option for barrier free showers in new or renovation installations.

With the HYDRO-BLOK Floor Lowering Kit, your shower area can be set up for a barrier free installation in no time at all. Easily installed clips allow the subfloor to be installed flush with the existing joists to allow curb-less, flush entry to your shower without major structural changes.

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HB HIW thin Single Slope

HB HIW Floor Lowering


Cant find the answer to your question here?  Contact your local HYDRO-BLOK representative.

Why should I choose HYDRO-BLOK for my new shower?

HYDRO-BLOK products were created to provide our customers with a fast and cost effective way to build a complete shower system ready for tile or stone much quicker than traditional methods. It is easy to install for both DIY-ers and contractors. If you want to get away from the look of a one piece shower or something similar, then HYDRO-BLOK is your best choice to build and finish a shower. With our extensive line of accessories, you can complete your shower the way you like.

Where is HYDRO-BLOK made?

Most HYDRO-BLOK products are made in China. Our Chinese manufacturing facility was built from the ground up with modern technology, quality control, and assembly equipment to ensure our products are made to the highest standards. Some HYDRO-BLOK products such as our Joint Sealant and Linear Drains are made in the USA.

How much weight can HYDRO-BLOK products support?

Our foam is an extruded XPS closed cell foam that is 100% waterproof with a very high compression strength. Our fibreglass mesh and polymer modified cement provide additional rigidity and strength.  For questions about specific applications, please contact us.

Can I build custom benches and other in-shower structures with HYDRO-BLOK?

Yes. HYDRO-BLOK is a building material that is lightweight and very easy to handle and cut. With our 1 1/2″ or 2″ building board, you can build just about any feature in a shower. Your HYDRO-BLOK dealer or representative can provide additional tips on constructing all types of shower and bath structures.

How does HYDRO-BLOK joint sealant work and how long does it last?

Our joint sealant is manufactured in the USA from one of the top producers of modified urethanes and comes with a 25-Year manufacturers warranty. After your installation is complete and the joint sealant has skinned over, which usually takes about 30 minutes at room temperature, you can apply thinset for your stone or tile.

Is HYDRO-BLOK fire rated or resistant?

Yes. HYDRO-BLOK  foam is specially made and will not burn or contribute to flame spread. See our Training page for the latest certifications or test results.

Can HYDRO-BLOK be used outdoors?

Yes, HYDRO-BLOK can be used outside as it is freeze/thaw stable. Please check with your local building codes and inspectors to confirm all rules and requirements.

Can I use HYDRO-BLOK for a steam shower?

Yes, but after installation to get the required perm rating, you will need to apply a liquid membrane or similar product as your final step before tile or stone application. We do not recommend a specific brand, however there are several professional brands of membranes available that will work well with our products.

How can I purchase HYDRO-BLOK products near me?

HYDRO-BLOK is always growing our North American dealer network. Please ask your local suppliers to stock HYDRO-BLOK products or contact us and we can help you find a source for the HYDRO-BLOK near you.

What is HYDRO-BLOK made from?

HYDRO-BLOK’s main component is its closed cell extruded polystyrene foam core which is 100% waterproof and lightweight. It is strong with a very high compression rate and density. It is made from HCFC, HBCD and CFC free ingredients and is environmentally friendly. The foam core is covered with a custom engineered polymer modified cement coating and fibreglass mesh to provide additional strength and the perfect bonding surface for your tile or stone.

Is HYDRO-BLOK easy to work with?

HYDRO-BLOK is easy to work with and install. It can be installed by trades or DIY-ers in most situations without specialized training. If you are not comfortable with this type of construction, then we recommend hiring a professional installer to build your dream bathroom project for you. Complete step-by-step installation instructions for all the main components are provided in each box.

What kind of warranty does HYDRO-BLOK have?

HYDRO-BLOK comes with a Lifetime Limited Warranty. See our warranty page for complete details.

After installation of the HYDRO-BLOK components, do you need to apply a final coat of waterproofing like a liquid membrane?

No. Once you have completed an installation and completely followed our installation guidelines, your shower or tub surround is completely waterproof and has vapour barrier built into the board. There is no need for any further waterproofing for a standard installation.

Can I use HYDRO-BLOK outside of my shower area, to build a tub surround?

Yes. HYDRO-BLOK is extremely versatile and can be used in a wide variety of applications including your new construction or newly renovated tub surrounds. See our Training page for our latest installation guide for tub surrounds.

Does HYDRO-BLOK provide any R-Value?

Yes. Because of our dense closed-cell foam core, HYDRO-BLOK products do provide some additional R-value but it should not be relied on to replace proper insulation products & practices.

How large can I make my shower?

HYDRO-BLOK is available in 13 standard shower pan sizes from 3’ x 3’ all the way to 5’ x 7’. And if that isn’t big enough, we have a complete line of shower extensions to meet any custom size requirements with the proper slopes.

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