Working with cellular concrete blocks is surprisingly straightforward, even for beginner DIY enthusiasts. You can easily cut or shape these lightweight blocks using a common hand saw. Need channels for plumbing or electrical lines? Open them up with routers and hole saws. To smooth edges, a wood rasp or sander does the trick—all operations well within the reach of anyone who enjoys home improvement.
Step-by-Step Working Process
Cutting and Shaping

Start by measuring your blocks carefully. Use a fine-toothed saw for clean cuts. For electrical outlets or switch boxes, a hole saw attached to a drill works perfectly. If you're working on a larger project like a room divider or storage wall, check out our home improvement collection for essential tools and materials.
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Laying the Blocks
Installation uses a specific adhesive, similar to tile glue, which also hides joint lines and serves as filler. Spread it on the block edges with a notched trowel shaped like a spoon. When building a small wall or partition, before laying the first block on the floor, cut a groove in the top edge deep enough to embed a piece of rebar. Insert this into a dowel that penetrates the perpendicular wall at the right height. This gives your DIY structure much more rigidity, preventing it from being loosely attached to existing masonry. Repeat this process on subsequent blocks, staggering them like bricks.
Finishing the Surface
The surface of cellular concrete is already quite smooth. For secondary rooms like a workshop or utility area, you can skip plastering entirely. If you do need plaster, apply it in a thin, single coat and smooth it with a float. No special treatment is needed if you plan to tile the wall; just level any grooves or electrical box recesses with the same adhesive used for laying blocks. For inspiration on furnishing your finished space, browse our wall decor or rugs collections.
Tools and Materials You'll Need
- Hand saw or power saw for cutting blocks
- Hole saw and router for openings
- Wood rasp or sander for edges
- Notched trowel for adhesive application
- Rebar and dowels for structural reinforcement
- Cellular concrete adhesive
- Float for smoothing plaster
Frequently Asked Questions
Can I use cellular concrete for outdoor projects?
Yes, but it requires proper sealing and protection from moisture. For outdoor applications, consider pairing it with durable outdoor patio furniture or outdoor decor to create a cohesive space.
Do I need to plaster cellular concrete walls?
Not necessarily. The surface is smooth enough for secondary rooms without plaster. If you want a more refined look, a thin coat of plaster works well. Complete your room with lighting fixtures from our collection.
How do I attach shelves or cabinets to cellular concrete walls?
Use specialized anchors designed for lightweight concrete. For heavy items like kitchen islands, ensure proper reinforcement. Check out our kitchen islands and carts for ready-made solutions.
Can I tile directly onto cellular concrete?
Yes, no special treatment is needed. Just level any grooves with the same adhesive used for laying blocks. After tiling, furnish the space with bathroom vanities or dining tables as needed.
Is cellular concrete good for soundproofing?
It offers decent sound insulation for interior walls. For better results, combine it with additional insulation materials. Pair your finished room with curtains or rugs to further dampen sound.
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For more project ideas and furnishings, explore our sofas, beds, desks, and office chairs collections to complete your DIY space.
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