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Specific material planning profile

Liquid-applied membrane

A field-applied waterproofing layer useful at complex geometry when substrate condition, primer, reinforcement, thickness, curing, transitions, and testing are controlled.

Material category
Waterproofing & drainage interfaces
Common exterior uses
Terraces, planters, decks, walls, water features, complex penetrations, and transition zones.
What is scored
Specification attention for this named material type—not quality, beauty, durability, or a particular product.
Illustrative Liquid-applied membrane sample cropped from the waterproofing & drainage interfaces comparison board
Illustrative Liquid-applied membrane study—not a named product, quarry, mill, approved finish, test specimen, or installed project.

How the five-point scale works

Higher means more confirmation—not better material.

The Registry uses this scale to show how much project-specific specification attention a factor deserves for Liquid-applied membrane. 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.

  1. 1Limited

    Confirm the standard submittal and installation requirements.

  2. 2Secondary

    Review the factor, but it is unlikely to control the decision by itself.

  3. 3Material

    Give the factor explicit project-specific specification attention.

  4. 4High

    Resolve the factor before approval because it can materially affect the result.

  5. 5Critical

    Require source-, product-, exposure-, or assembly-specific confirmation before commitment.

Specification-attention profile

What deserves attention for Liquid-applied membrane.

Every score below belongs to the named factor for Liquid-applied membrane. It does not describe the other examples in waterproofing & drainage interfaces.

  1. 5/ 5
    Critical attention

    Applied thickness

    Registry rationale

    Performance depends on achieving and documenting the specified wet and dry film thickness across the work.

  2. 5/ 5
    Critical attention

    Substrate and primer

    Registry rationale

    Moisture, profile, cleanliness, cracks, corners, and primer compatibility govern adhesion and continuity.

  3. 5/ 5
    Critical attention

    Weather and curing

    Registry rationale

    Temperature, humidity, rain, dew, recoat windows, and protection affect cure and bond.

  4. 5/ 5
    Critical attention

    Transitions and testing

    Registry rationale

    Joints, penetrations, terminations, reinforcement, repairs, and testing remain the highest-consequence details.

Before approval

Verify the actual selection.

  • Complete product system, primer, reinforcement, and accessories
  • Substrate moisture and acceptance criteria
  • Thickness logs, weather limits, cure, and recoat records
  • Transition details, testing, protection, and concealment photos

Owner questions

Ask the project team.

  1. How is film thickness measured and recorded?
  2. What substrate and weather conditions stop the work?
  3. How are transitions reinforced, tested, protected, and photographed?

Evidence and limits

Open supporting sources

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 →
GSA · Building envelope guidanceSupports: Federal building-system coordination and performance context for enclosure, waterproofing, and drainage decisions.National Park Service · Moisture in buildingsSupports: Moisture-source diagnosis, drainage, drying, and the need to resolve water paths rather than conceal symptoms.

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