Lip

Lip

Definition: The lip is the inner flange or ledge on the front-facing edge of a picture frame moulding. It serves as the resting point for artwork, matting, and glazing, ensuring that all components are held securely in place within the frame. The lip also defines the visible opening of the frame and helps maintain proper spacing between the artwork and the frame's front surface.

Characteristics

• Material: Typically formed from the same material as the frame moulding, such as wood, metal, or composite materials.
• Profile: Can vary in width and depth depending on the frame style; may be flat, rounded, or contoured.
• Function: Provides a mechanical stop to prevent artwork or matting from sliding forward.
• Visibility: Often visible along the interior edge of the frame, influencing the overall aesthetic of the presentation.

Uses

• Artwork Support: Holds paper, canvas, or mounted artwork securely in the frame.
• Glazing Placement: Keeps glass or acrylic glazing properly seated against the artwork.
• Mat Integration: Helps mats and liners stay in place without shifting.
• Design Function: Contributes to the frame's perceived depth and visual separation of the artwork from the frame edge.

Advantages

• Secure Fit: Prevents movement of artwork within the frame.
• Structural Integrity: Reinforces the frame's ability to safely contain glazing, mats, and backing boards.
• Design Versatility: Works with various frame profiles, from flat to ornate.

Best Practices

• Ensure the lip width accommodates the thickness of your artwork, mat, and glazing.
• For conservation framing, make sure the lip does not press directly against the artwork surface to avoid abrasion.
• When using glass or acrylic, consider a spacer or liner to prevent contact with delicate surfaces.
• Check alignment of the lip to ensure the artwork sits evenly and flush within the frame.

Related Terms

• Rabbet
• Flat Profile
• Stacked Frame
• Swan Profile