Visual mock-ups settle color, texture and appearance; performance mock-ups are built in a lab or on site and tested for air leakage, water penetration and structural load. Sealant mock-ups on the real substrates also host adhesion pull tests and stain checks. Approved mock-ups become the standard for the job, and problems found there are cheap to fix.
Mock-up failed water at 12 psf at the sill corner, fix the end dams before they start production.
A mock-up built by the foreman's best hands instead of the production crew proves little about the real work.
Also heard as
- mockup
Related terms
Hose test
A field water test spraying a controlled stream from a calibrated nozzle at joints and windows to find leaks.
Field adhesion test
A test that cuts a tab of cured sealant from an installed joint and pulls it to see whether it lets go of the substrate.
Compatibility test
A lab check that a sealant and the materials it touches do not react, discolor or lose adhesion together.
Bleed
Staining from fluids or plasticizers that migrate out of a sealant into porous stone or masonry.