WISP compared to impact glass:
- WISP has lower material costs
- WISP has lower tooling costs
- WISP significantly reduces water penetration (pre/post
impact)
- WISP has lower glass replacement costs
- WISP lowers U and SHGC values
- WISP offers integrated privacy, and shade
- WISP is lighter weight, easier to install, better capacity
- WISP may require deployment
- WISP has different visuals
- WISP has more components
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Impact resistant glass issues:
- Firemen do not like it
- Poor optics
- Limited sizes and grid configurations
- Laminates may react adversely to sealant
- Laminates are sensitive to UV
- High replacement cost (impact or install)
- Water penetration limits design pressure
- Delivery time is longer
- Heavy weight makes installation more difficult
- Heavy weight limits shipping capacity
- Material and labor costs are high…high initial cost to consumer (1.5-3X)
- Tooling costs for lamination line are high (2-3M)
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External protection issues to installer:
- Significant labor to install
- Complicated fastener selection and installation due to hidden substrates
- Obstructions complicate installations (sills, shutter, soffit or utilities)
- Storage space is needed
- Improper installation leads to insufficient protection
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