Specific material planning profile
A commonly dense crystalline stone family, still requiring product-specific review of finish, fabrication, joints, anchorage, and exposure.
How the five-point scale works
The Registry uses this scale to show how much project-specific specification attention a factor deserves for Granite. It is an editorial planning framework, not a laboratory result or product certification. No factors are averaged into an overall grade.
Levels are assigned from two questions: how consequential an unresolved factor could be, and how specific the evidence must be before commitment. They do not predict service life or failure.
Confirm the standard submittal and installation requirements.
Review the factor, but it is unlikely to control the decision by itself.
Give the factor explicit project-specific specification attention.
Resolve the factor before approval because it can materially affect the result.
Require source-, product-, exposure-, or assembly-specific confirmation before commitment.
Specification-attention profile
Every score below belongs to the named factor for Granite. It does not describe the other examples in natural stone exterior systems.
A finish appropriate for a wall or counter may not provide the same wet-foot or winter traction needed at paving.
Piece size, thickness, kerfs, anchors, edges, and support determine how the stone carries load.
Dense stone still depends on movement accommodation and compatible adjacent materials.
Density is not a substitute for confirming the actual product, finish, dimensions, and exterior data.
Before approval
Owner questions
Evidence and limits
These sources support the broader material-system principles. The five-point values are contractor-informed Registry editorial judgments under the published rubric; the sources do not assign those numbers. Current manufacturer literature, project specifications, source-specific test data, and local requirements must govern the actual selection.
Read the Registry methodology →