A glass block panel should never be freestanding. To secure panel into opening using the Block Lock, the process is very simple. All is required is the Block Lock PV spacer as every row acts as reinforcement.

Maximum panel size recommended when constructing with Block Lock Kit for internal use only up to 10m2. (Vertical dimension not to exceed 3m).

• Block Lock Plastic kit is only to be used internally.

ROD & MORTAR KITS (Internal & External Use)

Expansion material must be incorporated to the perimeter opening if glass blocks are going into a four sided section.

Maximum panel size without intermediate slip joint is 25m² with no single dimension exceeding 6m in any direction.

Can be used for internal and external applications


  • Glass block walls are self supporting, but not load bearing
  • For best integral strength, glass blocks should be installed into a four sided pre-prepared opening. This opening can be timber, brick, steel, concrete or block work
  • Glass blocks expand and contract with temperature change
  • Glass blocks should not be installed when the surrounding temperature is 5°C and falling or 30°C and rising
  • Openings must be square and perpendicular and made to suit glass block modules. Glass blocks cannot be cut like masonry bricks or tiles.


Do not clean with any acidic products, the best product for cleaning is water. Polish each block with a soft cloth using good old elbow grease.

Note: Clean face of block as work proceeds. The glass block installer should have left the glass block wall in a clean, unblemished condition. Requiring only periodical cleaning to maintain an excellent appearance. However, there may be a residue of cement on the glass surface left from mortar/tiling grout identified by whiteish bloom when dry. This may be removed by using a standard grout remover available from any local DIY or Tile shop.

Hydrofluoric Acid or Derivatives Must Not Be Used on Glass Blocks. Paint or cement may be removed by a blade taking care not to scratch the surface of the glass. Periodic cleaning is required using clean water and bung up with a chamois leather or in clean water use a proprietary glass cleaner and clean o with a lint free cloth.

Save & Share Cart
Your Shopping Cart will be saved and you'll be given a link. You, or anyone with the link, can use it to retrieve your Cart at any time within 30 days.
Back Save & Share Cart
Your Shopping Cart will be saved with Product pictures and information, and Cart Totals. Then send it to yourself, or a friend, with a link to retrieve it at any time within 30 days.
Your cart email sent successfully :)