Is glass block OK for shower?

The short answer is yes, glass block can be an excellent material choice for shower walls. Glass block allows natural light into the shower while obscuring visibility, providing privacy and a unique look. However, there are some important considerations when using glass block in showers, including sealing and waterproofing methods. With proper installation and maintenance, glass block shower walls can be durable, low-maintenance, and visually appealing.

The benefits of glass block for showers

There are several key reasons why glass block can work well for shower walls:

• Aesthetics – Glass blocks offer a stylish, modern look that sets them apart from basic tile or plastic surrounds. The grid-like pattern and visibility of light looks elegant and distinctive.
• Light – Glass blocks allow abundant natural light into a bathroom. This creates a bright, open feel and reduces the need for artificial lighting during daytime hours.
• Privacy – While allowing light to pass, the distorted quality of glass block obscures shape and detail. This provides an optimum level of privacy for bathers.
• Space – Glass block installation takes up less space than many wall materials, allowing more room in tight shower stall areas.
• Low maintenance – Glass blocks do not require extensive cleaning, re-grouting, or regular sealing like some shower wall materials.
• Durability – Glass block is break-resistant and stands up well to damp conditions when properly sealed.
• Improved ventilation – The open grid design promotes air circulation, allowing moisture to escape and reducing mold and mildew buildup.

With proper precautions taken during installation, glass block can be an ideal material choice for shower enclosures in many homes and bathrooms.

Using glass block in showers successfully

While glass block has many positive attributes for showers, there are some special considerations to bear in mind when using it in this wet application:

• Waterproofing – Extra waterproofing steps must be taken during installation to prevent leaks. This includes:
  • Sealing blocks together with a flexible sealant/adhesive
  • Applying waterproof membrane over substrate and glass blocks
  • Ensuring proper drainage slope
• Support structure – Glass blocks require a sturdy frame or substrate (such as wood studs or concrete) to attach to. The support must be able to withstand prolonged moisture exposure.
• Ventilation – Using open blocks (with holes) and ventilation ports is recommended to allow airflow and moisture escape.
• Hardware – Stainless steel, brass, or other corrosion-resistant hardware should be used for hanging doors, shelves, rods, etc.
• Sealing – Sealants and grout must be maintained over time to prevent water intrusion.
• Condensation control – Using tempered glass and allowing light/air into the shower area can help control moisture buildup on block surfaces.

Installation process

Installing a glass block shower wall requires careful attention to detail, patience, and proper materials. Here is an overview of the key installation steps:

1. Build waterproof backing – Construct a reinforcement framework for the blocks, such as wood or metal studs. Cover this with waterproof membrane, such as Kerdi board, cement board, or lead pan flashing.
2. Dry fit blocks – Position blocks without mortar to test the layout and identify any needed adjustments.
3. Apply mortar – Use a non-sagging waterproof mortar to attach blocks to the backing. Spread mortar over the entire back surface of each block.
4. Place blocks – Press blocks firmly into position, lightly twisting to key mortar into surface pores. Check joints and confirm alignment as you go.
5. Allow mortar to cure – Let the mortar cure fully (typically 48-72 hours) before grouting or applying other stress.
6. Grout joints – Mix flexible, waterproof grout and pack it thoroughly into the joints between blocks.
7. Seal surface – Apply a penetrating sealer formulated for glass block to protect the entire wall surface.
8. Make final connections – Attach plumbing fixtures, lights, doors, Shelving and hardware using silicone or other flexible, waterproof sealant.

Careful workmanship is crucial throughout the installation process. Rushing through steps or using substandard materials can easily lead to leaks or other failures down the road.

Maintenance tips

Like any shower wall material, glass block requires periodic maintenance to keep it looking beautiful and prevent leaks. Recommended maintenance tips include:

• Check grout and sealant joints annually for any cracks or deterioration. Re-grout or re-caulk as needed.
• Apply fresh sealer every 1-2 years to protect the surface from staining and damage.
• Use gentle cleaners and avoid abrasive pads or scrubbing to prevent scratching or etching the glass surface.
• Watch for condensation buildup or water pooling on frames/sills which could signal drainage issues.
• Inspect for leaks, cracks, or loosening blocks and address any issues immediately.
• Make sure the open ventilation ports in the blocks remain unobstructed.
• Use a squeegee after showering to quickly wipe down glass block walls and promote drying.

With occasional sealing and careful cleaning, glass block shower walls can stay watertight and maintain their beauty for many years before needing any major repair work.

Cost of glass block showers

What is the estimated cost for a glass block shower installation? The total cost depends on several factors:

• Size – The number of blocks needed to cover the wall area. Standard blocks are 4″ x 8″.
• Type of block – Intricate patterned, frosted, tempered, or solid blocks cost more than basic clear blocks.
• Additional materials – Backing panels, mortar, grout, sealant, etc. add to the final budget.
• Accessibility – A difficult install location or the need to modify existing infrastructure increase labor time.
• Contractor rates – Labor costs vary based on contractor expertise, local rates, and project complexity.

As a rough estimate, a basic glass block shower installation may cost $40-$60 per square foot. A high-end application with premium materials could be $80-$150 per square foot. The total cost for a 5×5 shower enclosure could range from under $1,000 for a simple DIY to over $7,000 for an intricate custom job.

Glass block certainly demands a higher initial investment than basic tile or fiberglass. However, the visual beauty and durability can make it worthwhile in the right setting.

Pros and cons of glass block showers

Weighing the advantages and disadvantages of glass block showers can help decide if it is the right choice for your bathroom remodel.

Some of the benefits include:

• Unique appearance
• Natural lighting
• Low-maintenance
• Resists mold and mildew
• Durable and long-lasting

Potential downsides to consider are:

• Higher initial cost than basic tile or fiberglass
• Complex installation requiring specialty skills
• Not completely watertight, requires careful sealing
• Glass can be scratched or damaged if not cared for properly
• Limited style options compared to tile

Weighing your budget, design priorities, and skills will help determine if the pros of glass block outweigh the cons for your particular shower remodeling plans.

Alternatives to glass block showers

There are several other distinctive shower wall materials that provide unique style if glass block is not the right solution:

• Tile – Fully waterproof when installed correctly. Huge variety of colors, textures, and patterns available. Can mimic a glass block look with clear glass mosaic tiles.
• Acrylic – Seamless walls for watertight performance. Installs quickly over existing surrounds. Flexible for curves or angles. Easy to clean.
• Natural stone – Elegant look but very heavy. Needs significant waterproofing and strong backing.
• Stainless steel – Sleek, modern appearance. Durable but expensive. Can dent easily. Surfaces show water spots.
• Fiberglass surrounds – Affordable option for DIY. Seamless and watertight but prone to scratches over time.
• Cement board – Durable subsurface to be finished with tile or waterproof coating. Heavier than other surrounds.

With good installation and care, any of these can provide a long-lasting shower wall. The choice comes down to the look, cost, and practical needs of your bathroom.

Conclusion

Glass block can create a truly eye-catching shower design when done right. While not the easiest or cheapest option, glass block has distinct advantages – lighting, privacy, ventilation, style – that support its use in the right setting. Paying close attention to specialized installation steps and keeping up with sealing and maintenance will help glass block showers deliver lasting beauty and enjoyment for years to come.