Checks before using second-grade 100 mm wall panels

Also establish the core type and the parameters of the facings. A thickness of 100 mm does not allow you to infer thermal performance, weight or fire classification. If the panel is to meet the project requirements, you need confirmation of the properties of the specific variant. A mere assurance of a minor defect is not such confirmation.

Inspect the interlocking joints along the entire length. A crushed edge can make it difficult to push the adjacent panel into place and to achieve a seal. Also check the panel ends and the points intended for fixings. Damage at a support can be more significant than a small scratch in the middle of the wall.

Look for detachment of the facing, cracks in the core and local deformation. Do not assume that all such defects are cosmetic. In a panel, the layers act together. If their bond has been compromised, an assessment of suitability is required. An additional screw or a repair does not automatically restore the original properties.

Calculate the cover lengths and widths of all elements. Then assign them to specific wall areas. In the model extension in Gostyń, shorter sections may fit above the low entrance area. However, this does not mean that every offcut can be used without an additional joint and support.

Check the installation direction and the compatibility of the interlocking joints. Do not mix random panel families just because they are 100 mm thick. Differences in width, geometry and facing profile can prevent connection. If the batch is not sufficient for the entire wall, determine how the stage will be completed before starting work.

A slight change in shade may be barely visible on a single panel but pronounced on a large façade. Gloss and the direction of profiling also affect the perception of the surface. Examine several elements side by side in similar light. This applies particularly to material from different batches.

If the coating defect exposes the steel, determine the repair method appropriate to the given finish. Not every scratch should be treated the same. More serious damage may require rejecting a section or component. Painting the entire wall after installation may also change the purchase calculation, so include it in the cost estimate in advance.

Assess the colour before fixing the first panel. Once the entire wall has been laid, swapping elements means new work on seals and fixings. Laying out the batch beforehand avoids this.

Let us take, solely for the calculation, a batch of 50 m² at an agreed €18.52/m². The material cost is €926.00. If, after assessment and cutting, you use 42 m², the sheet itself costs approximately €22.05 per useful square metre. This is not a market offer, but an example of the effect of losses.

Add transport, cutting, repairs and missing elements to the calculation. Compare the total with a full-quality batch for the same wall area. If the second grade requires many joints or additional painting, the saving may be reduced. Timing is also important: waiting for missing panels may halt the next stage of work.

The order confirmation should include quantities, dimensions and a description of known defects. Attach the agreed acceptance method and the rules for assessing the material. If the price applies to the entire batch, check whether individual elements that do not meet the agreed conditions can be rejected. Do not rely on assumption.

• Identify the specific type of 100 mm panel.
• Describe the defects and their distribution.
• Confirm the compatibility of the interlocking joints and the cover surface.
• Record the required documents and delivery conditions.

Carry out a final inspection before installation. Leaving problematic elements until the end of the wall can create a situation where there is not enough good material to close the building.