Block Quality

About Our Quality Control

We take quality control seriously, grading Interbloc blocks into three quality bands based on:

  • Dimensional accuracy
  • Concrete strength
  • Aesthetics
  • Integrity of lifting pin

Our three quality bands are Premium, Basic, and Second. You can view the full quality band guidelines here.

Block Characteristics

Minimum 20Mpa: All blocks used in a structural application need to have a mPa of 20 or higher. If a specific mPa is required we can manufacture to order.

Reinforcing Ducts: If vertical reinforcing is required in a wall, we’ll provide blocks with reinforcing ducts.

Dimensional Accuracy: Structures over 1.8m high need a higher level of dimensional accuracy, this means each block will have less than 3mm variation in dimensional accuracy. Lower height structures, bollards, and counterweights allow for greater tolerances.

Aesthetic: Some chipping in blocks is unavoidable, especially during transport. When we specify the aesthetic of the block we mean it will meet the following requirements at dispatch: Block chipping is less than 10mm wide or 10mm deep. No more than two edges with chipping on either face of the block. No gaps or air bubbles on the face of the block.

Lifting Anchor: Not all projects require a lifting anchor – in fact, on some projects it’s desirable not to have one. We’ll specify whether your blocks can be lifted using a lifting anchor, or whether the forklift ducts located at the bottom of the block are sufficient. We also have a gravity lifter available for hire.

Single Colour: There are natural and manufacturing variations in the colour of concrete. When we specify a single colour we mean all blocks will have the same colour, however there may still be slight variations in the shade.

Single Pour: Due to the manufacturing process, some blocks are made up of two different pours. Multiple pour blocks are better suited to low height walls and counterweights.

Warranty Information

We offer comprehensive warranties on all our premium products and limited warranties on basic products.

The standard solution to faulty manufacturing is to replace that product.

You can read our warranty policy here.

We are a building product supplier and we do not undertake installation work. As such, our warranty is strictly limited to the replacement of blocks.

Guaranteed MPa Blocks

All our premium and basic products meet a minimum strength of 20MPa at 21 days.

About 50% of our blocks exceed this requirement. As such we can provide project-specific minimum MPa blocks.

Seconds Blocks

Every manufacturing process results in errors. Envirocon is no different, and we sell seconds to select customers for specific applications. Seconds blocks carry no warranty. There are two specific block characteristics which will automatically classify a block as a second:

Concrete MPa: Will be less than 20MPa

Lifting Anchor: No lifting anchor warranty.

Block Buyback

Our approach to product design means that our blocks can have use long after you no longer require them. That’s why we offer a unique Buyback Guarantee. It’s about making your life easier while helping the environment. It is essentially a second-hand trading service, we take the blocks off your hands and offer them to our database of customers who prefer second-hand blocks.

Effects of Transport on Quality

The movement of the truck while in transit can result in minor chipping of the blocks. This is largely unavoidable, however, in cases where it is essential to maintain the aesthetics of the block, blocks can be loaded on a truck with greater space between each block. This will result in increased freight costs. Customers who require this service should discuss this with their Envirocon rep.

At Envirocon we make every effort to minimize chipping. For this reason, we require flat-bottom blocks to be loaded on dunnage.

Envirocon does not take responsibility for chipping of blocks in transit, or during the offloading of blocks by the customer.

Extra Information

The quality of the block is measured at dispatch. Envirocon will not take any responsibility for damage during transport or unloading.

Where the final aesthetics of a wall are critical, it is important to remember that Interbloc is an industrial looking product. Envirocon can provide advice on options for post-installation veneers.

As per Envirocon’s Terms of Sale, remedial action for block quality disputes is the replacement of blocks.

January 30, 2020  Interbloc

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