BOARD-FORMED

CONCRETE WORKTOPS

This project uses a method called ‘board formed concrete‘ which is explained in a blog post here.

To retain the fantastic rough and earthen qualities of the wood, and to avoid any major adhesion, the grain is exposed to make the peaks of the sturdy winter growth contrast against the peaks made from weaker summer growth. It’s done by process of sandblasting, which removes softer parts and leaves stronger parts behind.

After this desired amount of grain has been accentuated, the surface is then sealed using resin (polyester), following on from these, a couple of coats are applied and then allowed to dry – they are then waxed and ready to cast.

The concrete was then mixed poured into forms. the worktop pieces to minimise the number of air pockets on top of the face of the concrete worktop. not many people want any voids on the food preparation space (we have been asked before now though) it’s harder to clean. Edges are hand packed to allow a few air pockets and lay lines for aesthetic effect – adding some industrial realism and authenticity in regards to the materials used.

Well graded river sand is used as the aggregate when this is combined with white cement and metakaolin. The white cement is chosen to retain a sandy colour which will show through even after being polished and sealed. the client on this particular project chose a polished top to contrast with the rough outside areas.

The result is a gorgeous, textured worktop.