Technical Booklet V Glazing·Page 15·3.3
Visual contrast and durability of manifestation
Permanent manifestation must be visually distinguishable from the background through suitable contrast, and applied materials may be used if they are durable and not easily removable without tools to promote sustainability.
Permanent manifestation should be distinguishable by having suitable visual contrast from the background seen through the glazing. To encourage sustainability, applied materials may be considered suitable to satisfy the provision of permanent manifestation provided the applied material is durable and not easily removed (e.g. without the use of a tool).
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