What .090" PVB means
The figure is the interlayer gauge in inches. .090" equals 2.28 mm. PVB, polyvinyl butyral, is the plastic that bonds the two lites.
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Laminated glass
Annealed laminates for hurricane impact window glazing. Supplied as stock sheets or cut sizes, in metric makeups with inch notation alongside.
Makeups
3 makeups shown
| Code | Makeup | Metric | Nominal | Interlayer | Color | Standard | Sample |
|---|---|---|---|---|---|---|---|
| LG-0909 | 1/8" + .090" PVB + 1/8" | 3 + 2.28 + 3 = 8.28 mm | 5/16" nom. | PVB | Clear · Gray | Specified to ASTM C1172 | Request a sample |
| LG-1309 | 3/16" + .090" PVB + 3/16" | 5 + 2.28 + 5 = 12.28 mm | 7/16" nom. | PVB | Clear · Gray | Specified to ASTM C1172 | Request a sample |
| LG-0909-SG | 1/8" + .090" SGP + 1/8" | 3 + 2.28 SGP + 3 = 8.28 mm | 5/16" nom. | SGP | Clear · Gray | Specified to ASTM C1172 | Request a sample |
- Stock sheet sizes
- 84" × 130" · 2140 × 3300 mm
- 88" × 126" · 2250 × 3210 mm
How to specify
Who this is for
Impact window manufacturers in Florida and glass fabricators across the U.S. You already know the makeup your product was tested with. We supply against it.
- Makeup
- Give the lite thicknesses and the interlayer, in inches or millimeters. Use a code from the table if one fits.
- Interlayer
- State the type and gauge. Match the interlayer named in your product approval, not the nearest equivalent.
- Sizes
- Stock sheet or cut size, with quantities per size and the edge condition you need.
- Delivery
- Your receiving state and how your dock unloads. We quote freight to that point.
Technical notes
How we write thickness
Lites go in sixteenths of an inch and interlayers in thousandths. The inch total is the sum rounded to the nearest 1/16", marked nom. The metric total is exact: 3 + 2.28 + 3 = 8.28 mm. Quote from the metric line when you need the true thickness.
Annealed or tempered
Annealed glass cools slowly and keeps low residual stress, so it can be cut after it is made. Tempered glass is heated and quenched. It is stronger but cannot be cut afterward, so every size must be final before tempering.
Why the interlayer matters in impact
When the lites crack, the interlayer holds the fragments and keeps the opening closed under wind pressure. Gauge and type change that behavior. SGP is stiffer than PVB, which is why some systems specify it.
What a NOA covers
A Miami-Dade NOA approves a tested window or door assembly, not loose glass. Your approval names the glass makeup, and the supplied glass has to match it. We can provide documentation for your file on request.
How each lite is marked
Each lite carries a mark etched by the laminator, with the interlayer, the standard and the approval. Your product approval says which marks the glass must show, so check it before you order.