Most People Use Siporex for Walls. She Turned It Into a Garden Bench
Most people use Siporex blocks for walls. Instagram creator @addictdeco_myhome used the lightweight cellular concrete material to build a sculptural garden bench instead.
Handsaw cuts, steel reinforcement rods, and cellular concrete mortar created the structure. Smooth surfaces still looked like construction blocks waiting for installation.
A carbide ball rasp mounted to a drill transformed the bench with hundreds of carved impressions. Finished piece looks closer to hand-worked limestone than the wall material it started from.
Siporex Cut With a Hand Saw
A large Siporex block became the starting point. Thousands of air pockets inside the material make cutting possible with simple hand tools.
A single saw cut passes through the block without masonry equipment. Material properties make shaping far easier than standard concrete.
Straight Cuts Created the Main Components
Long cuts divided the block into thinner sections destined for the seat and supports. Clean edges produced consistent dimensions across every piece.
Rectangular forms dominated this stage. Decorative work remained ahead.
Grooves Prepared the Bench for Reinforcement
Channels carved into the seat section received steel reinforcement rods. Cellular concrete mortar filled the grooves before assembly.
Reinforcement strengthened the long span and created stronger connections between structural elements.
Cellular Concrete Mortar Bonded the Structure
Cement-based mortar spread across contact surfaces with a notched trowel. Deep ridges ensured full coverage across each joint.
One support moved beneath the seat slab, transforming separate pieces into a recognizable structure.
Carbide Ball Rasp Created a Hand-Carved Stone Effect
Bench structure was already assembled, but smooth Siporex surfaces still revealed the material’s construction origins. Texture became the step that transformed the project from a simple build into a custom furniture piece.
Using a Litorange carbide ball rasp mounted to a drill, the creator carved hundreds of shallow depressions across the supports and seat edge. Repeated passes removed small amounts of cellular concrete and produced a surface that resembles hand-worked limestone. Light, shadow, and irregular texture gave the bench far more visual depth than the original flat panels.
Surface Hardener Prepared the Bench for Its Final Finish
Toupret Durci’Mur hardener was brushed across the carved Siporex after the shaping process was complete. The product penetrates soft cellular concrete, strengthens the surface, and creates a more durable base for exterior use.
Texture created by the carbide ball rasp remains fully visible after application. A final finish can stop here for a raw mineral appearance, or continue with limewash paint to highlight the carved depressions and create a softer stone-like effect.
Siporex Became Outdoor Furniture
Finished bench bears little resemblance to the original blocks. Thick supports, textured sides, and a continuous seat create a custom-built appearance.
Wood decking, woven rugs, and simple accessories highlight the sculptural form.
Texture Turned Construction Blocks Into a Bench That Looks Carved From Stone
Simple Siporex blocks, a handsaw, reinforcement rods, and masonry adhesive created the structure. Deep carving with a carbide ball rasp transformed flat construction material into a bench with hand-carved texture across every exposed surface.
Steel reinforcement hidden inside the seat adds strength, while the hardened finish protects the cellular concrete outdoors. More than 200,000 Instagram views followed after creator @addictdeco_myhome shared the project, showing how a few building blocks evolved into a sculptural garden bench that looks closer to carved limestone than masonry products from a construction yard.
All images belongs to the creator on Instagram @addictdeco_myhome.