Exterior materials performance atlas

Compare the finish. Evaluate the installed system.

Choose a broad system, compare its examples, then open the specific material you are considering. Five-point profiles appear only at that specific level, where the subject of every score is explicit.

How to use the atlas

Use each record for one clear sequence.

01

Start with the broad materials overview when you are choosing a design direction.

02

Choose an Atlas category such as natural stone, concrete, timber, metals, or drainage interfaces.

03

Compare examples, then open one specific material for its five-point specification-attention profile.

What the concern level belongs to

Broad to specific, without mixing the scores.

“Natural stone” is a category. Limestone, sandstone, granite, and quartzite are individual examples inside it. System-wide concerns are explained on the category page without a numeric grade; the five-point scale appears only after you choose one named material.

CategoryNatural stone
ExamplesLimestone · sandstone · granite · quartzite
Specific profileLimestone → its own factors and five-point attention levels
Four illustrative stone specimens arranged for comparison: pale limestone, warm sandstone, speckled granite, and crystalline quartzite
Illustrative comparison · generic examples
01

Installed-system record

Natural stone exterior systems

Evaluate stone as an assembly: geology, absorption, freeze–thaw exposure, anchorage or bond, joints, drainage, and compatible adjacent materials.

Compare examples in this category
Four illustrative concrete specimens arranged for comparison: board-formed cast-in-place, sandblasted precast, honed precast, and ribbed GFRC
Illustrative comparison · generic examples
02

Installed-system record

Architectural concrete

Durability begins with exposure classification, mixture design, consolidation, curing, drainage, joints, and protection—not the final color or texture.

Compare examples in this category
Four illustrative exterior wood specimens arranged for comparison: Western red cedar, thermally modified wood, acetylated wood, and dark durable hardwood
Illustrative comparison · generic examples
03

Installed-system record

Exterior timber & wood finishes

Species, grade, moisture cycling, detailing, coatings, fasteners, end grain, ventilation, and maintenance expectations must be considered together.

Compare examples in this category
Illustrative metal specimens: bronze, weathering steel, powder-coated aluminum, and brushed stainless steel arranged for comparison
Illustrative comparison · generic examples
04

Installed-system record

Metals, finishes & corrosion

Material pairing, coating system, water retention, salts, fasteners, fabrication damage, and maintainability shape outdoor metal performance.

Compare examples in this category
Illustrative envelope components: sheet membrane, liquid-applied membrane, dimpled drainage composite, and folded metal flashing
Illustrative comparison · generic examples
05

Installed-system record

Waterproofing & drainage interfaces

The most consequential exterior failures often occur where systems meet: walls and paving, planters and structures, pools and decks, roofs and masonry, or membranes and penetrations.

Compare examples in this category

Decision comparisons

Compare alternatives before opening a specification profile.

These records answer the owner's real selection question first, then connect every alternative to its exact Atlas profile, assembly concerns, evidence limits, and project-team questions.

Plain-English terms used throughout the Atlas
Assembly
The complete built system—not only the visible finish. It can include structure, backing, membranes, fasteners, joints, drainage, and adjacent materials.
Substrate
The supporting surface underneath a finish, coating, membrane, or adhered product.
Interface
The place where two materials, trades, or systems meet and where drainage, movement, or responsibility often needs explicit resolution.
Mockup
A representative sample installation used to approve appearance, workmanship, joints, transitions, or performance before production work proceeds.

Evidence boundary

Federal research can frame the decision. It cannot select the product.

Each record separates broad research-supported principles from Registry interpretation and the questions a project team must answer for its specific products, assemblies, exposures, and warranties.

The Atlas does not reproduce private standards, proprietary manufacturer details, contractor formulas, or unpublished trade pricing.