Summer 1995
Common Problems:
- Incorrect sequencing of flashing installation resulting
in mislapped building paper and BCRFM (barrier-coated,
reinforced flashing material), often identified as Sisalkraft
paper.
- BCRFM paper cut too short or missing.
- Use of improper materials in window flashing such as
using cut-up building paper instead of BCRFM paper.
- Omission of butyl sealant bead around bottom and slides
of window units between the flange and BCRFM paper.
Potential Damage:
- Water intrusion into the framing system and living spaces
resulting in:
- Dryrot in the wood-framing system.
- Water-strained gypsum board.
- Damaged flooring materials, carpeting and interior
furnishings.
Proper Solutions/Construction for Aluminium
and Vinyl Window Flashing:
- Installation should be per Uniform Building Code Section
1707(b).
- Use only approved materials.
- Follow window manufacturers' details for installation
of flashing materials.
- Follow industry standard details, such as those of the
Plastering Information Bureau.
 |
Step 1:
Application of Flashing Strips
Step 2:
Installation of Window Unit
Step 3:
Installation of Building Paper and Finishes |
Information provided by Building Analysts, a full-service architectural and engineering firm with many years of experience in construction litigation. Their services include: architectural and structural investigations, repair recommendations, preparation of exhibits and expert testimony. Contact Building Analysts at (619) 234-8153.
