BANARTA
A shared colour name or RAL reference does not, by itself, approve a PVC-faced sandwich panel against a door-frame sample. For an agreed finish, identify the actual panel face, the frame surface beside it and the physical samples being compared. Record the result separately for each side before releasing an order.
This guide provides a purchasing handover for appearance. It does not establish that a particular colour, foil, texture or exterior configuration is available from Banarta. Those details must be confirmed for the panel being quoted.
Separate a colour reference from the actual finish
A colour code is useful for communicating an intended shade. It may not identify the material, coating or foil, surface texture, gloss or exact appearance of the supplied face. “White both sides” also leaves open whether both faces must match the same reference sample.
For example, VEKA’s Variations guide describes its RAL references as approximate matches to particular foils and recommends physical swatches for comparison. That statement concerns VEKA’s finishes; it illustrates why a reference number should not silently replace an agreed sample. It does not mean that Banarta supplies those foils.
Record the supplier’s actual finish identifier where available, alongside any approximate colour reference. If an exact material or finish is unavailable, identify the proposed alternative before comparing it. Do not label a substitute “the same” merely because both quotations use the same colour name.
Map the two panel faces to the correct frame surfaces
Choose a fixed view on the buyer drawing and label Face A and Face B. State which is the room side, opposite side or other identified location; do not assume every supplier uses A to mean outside. Link each face to the frame surface visible beside it.
For a directional finish, mark the intended viewing orientation on the sample record. When inspecting the reverse face, retain the agreed panel orientation. This avoids approving a correct-looking sample for the wrong side or recording an unspecified reversal.
A simple handover might identify panel mark P-01, Face A sample PA-01 beside frame sample FA-01, and Face B sample PB-01 beside frame sample FB-01. These are illustrative identifiers, not product codes. Use the same identifiers in the approval record and the order revision.
Compare physical samples under agreed conditions
Arrange the proposed panel and frame samples beside each other as they will be seen. Agree the lighting, viewing direction and distance, sample condition and person responsible for the decision. Follow the sample supplier’s instructions for protective film; record whether the viewed surface is the exposed finish. A film-covered face should not silently become the appearance reference.
Use photographs to document the arrangement, with sample labels visible. Screen images can help communication but should not replace the retained physical reference. If appearance changes noticeably between the agreed viewing conditions, record that difference instead of choosing only the most favourable photograph.
Keep appearance approval distinct from fitting and performance checks. An acceptable shade does not confirm frame clearance, bond durability, exterior suitability or the performance of a complete door assembly.
Copy this finish-sample approval card
Complete one card for each distinct panel/frame finish combination. Keep unknown fields marked unconfirmed. On narrow screens, scroll the table sideways; keyboard users can focus the table and use the arrow keys.
| Record | Panel Face A | Panel Face B | Frame reference / shared decision |
|---|---|---|---|
| Panel mark, drawing and view | [Side/location; orientation] | [Side/location; orientation] | [Drawing revision; corresponding frame surfaces] |
| Proposed finish identity | [Material/finish identifier; approximate colour reference if used] | [Material/finish identifier; approximate colour reference if used] | [Frame finish identifier for each side] |
| Appearance to compare | [Colour; gloss; texture; direction if relevant] | [Colour; gloss; texture; direction if relevant] | [Agreed matching requirement or recorded contrast] |
| Retained physical samples | [Sample ID; date; holder] | [Sample ID; date; holder] | [Frame sample IDs; date; holder] |
| Comparison conditions | [Exposed finish/film condition] | [Exposed finish/film condition] | [Lighting; view/distance; comparison date; reviewer] |
| Decision and open differences | [Accepted / unresolved; exact scope] | [Accepted / unresolved; exact scope] | [Agreed acceptance basis; open issue and owner; approval/order revision] |
Carry the approved reference into the order
Retain labelled samples with the buyer and supplier, and identify which sample record controls the agreed appearance. If numerical tolerances are required, agree the measurement method and limits with the relevant parties; this guide supplies no universal tolerance. BPF’s 2015 infill-panel specification is a historical example of manufacturers declaring appearance and finish tolerances, not a statement of today’s mandatory requirements.
When a finish, supplier, panel face or reference sample changes, record the change and resolve whether a new comparison is needed. An unresolved reverse face must not disappear because the front face was accepted.
For a proposed construction, review the PVC-faced XPS sandwich panel and send the identified frame samples and finish record with your enquiry. Use the PVC panel procurement guide for dimensions, frame fit and the rest of the order. Confirm the exact offered faces and any differences before approval.
Source notes
VEKA Variations, September 2025, notes on printed page 39, supports the distinction between its approximate RAL references and physical finish samples. BPF infill-panel specification 355/2, July 2015, section 5, provides historical context for declared appearance tolerances. Neither document establishes Banarta finish availability or product performance.
