Core idea: Use flexible sealing as part of a complete assembly.
Purpose
Flexible sealant maintains airtightness at appropriate perimeters and penetrations.
Not an adhesive
Use it only for approved compatible applications.
Fire locations
Fire separations may require listed firestop systems instead.
Inspection
Check continuous beads before finishes hide the work.
A practical planning sequence
- Describe the source, timing and frequency character.
- Trace direct and flanking paths.
- Set a realistic improvement goal.
- Compare complete systems and local requirements.
- Document the baseline and inspect details during work.
- Repeat the same test afterward.
What cannot be guaranteed online
No website can promise a specific reduction in an unknown building. Field results depend on construction, workmanship, connected structures, openings and the source.
Written by Martin R. Calderwood.