BlockGrip: The Only NHBRC-Approved
Dip-and-Stack Thin-bed Mortar System.

Build 10x faster with precision, and zero waste.

BlockGrip™ is a South African breakthrough in construction technology. Designed specifically for the “Dip-and-Stack” method, this concentrate eliminates the need for skilled masonry labor and heavy troweling. It turns a standard wheelbarrow mix into a high-performance adhesive that is stronger than the blocks themselves.

The “Dip-and-Stack” Advantage:

Stop troweling and start building. By dipping the “teeth” of your interlocking blocks into a 5cm shallow bed of BlockGrip TBM in wheelbarrow, you create a uniform, airtight bond in seconds.

• Zero Waste: No mortar falling off the trowel or drying on the board. Leftover mortar in the wheelbarrow can be used to fill gaps or imperfections, making the most of every batch

• Cleaner Finish: Excess mix is easily struck off with a trowel for a professional, “face-brick” look.

• NHBRC Certified: The only thin-bed system in SA with full NHBRC approval for structural integrity.

Note: The Blockgrip TBM has been designed to work with StumbelBloc’s, but can be used with standard blocks too (Just wait two hours between row for Blockgrip to set before next non-interlocking row.)

The “Big Batch” Master Recipe (Makes 150kg):

To achieve the 400-block yield, combine:

1. 1kg BlockGrip™ Concentrate

2. 50kg Cement (42.5 MPa)

3. 1 Level Wheelbarrow (65L) Fine Plaster Sand

4. Water: Add gradually until you reach a “Honey Consistency.” Only mix what you can use within 2 hours.

Locally Developed

BlockGrip is proudly developed and manufactured in South Africa, supporting local innovation and construction needs, approved by the NHBRC.  It’s trusted by builders for its ease of use and reliable performance.

Here’s a comparison chart of local thinbed mortars for interlocking block construction in South Africa: