Answer the substitution call from the truck.
The specified glass has a twelve-week lead time? See what else meets the numbers, what fits the storefront system, and send it, all from your phone.
From the opening to the right makeup
1. The opening
Find a makeup for the opening
Pick the opening’s size or the storefront system and the kind of glazing, and see every makeup that fits, each with its calculated U-factor, SHGC and light.
2. Storefronts
Which glass fits which system
62 storefront systems from Kawneer, YKK AP, Tubelite, EFCO, Oldcastle, Arcadia and CRL: the glass each takes, from the makers’ own published data.
3. On site
Read the stamp, measure the opening
Read a safety-glass stamp and see what it means. In the iPhone app, measure openings with the camera for a takeoff by glass type (estimates; field-verify before ordering).
4. The crew
Read-only seats for the shop and installers
On Basic and Pro, add the shop floor and installers as Technicians at no extra cost: they look up makeups, sheets and projects and can’t change anything.
Built for the job site
- Makeups by nominal size, as the trade names them (1/4" + 1/2" + 1/4" = 1")
- Measured hurricane laminates from LBNL’s IGDB, with their own light and solar numbers
- A warning when a low-e coating is buried against the interlayer, with a one-tap fix
- Submittals to the architect, checked against the project’s targets (Basic and Pro)
- Openings, square feet and pounds of glass by glass type
Impact and safety ratings stay with the product’s own test report and labels; GlassRef reads and shows, it never certifies.
Start in a minute
- Get the iPhone app or create a free account at app.glassref.com.
- Name your company. You get 14 days of Pro, no card.
- Open Makeups and tap Find a makeup.
A real GlassRef screen.
Questions glaziers ask
Can GlassRef tell me if a substitute glass meets the spec?
Enter the U-factor, SHGC and light the spec calls for and GlassRef lists every coated glass that meets them in typical 1" and 1-1/8" insulating and impact units, each calculated with LBNL’s engine. The architect still approves the substitution.
Which storefront systems are included?
62 systems from Kawneer, YKK AP, Tubelite, EFCO, Oldcastle, Arcadia and CRL, with the glass thickness each takes and the maker’s own impact wording, from their published data.
How does the safety-glass stamp reader work?
Point the iPhone camera at the etched stamp, or type it on the web. GlassRef explains the marks it finds: tempered, laminated or heat-strengthened, CPSC 16 CFR 1201, ANSI Z97.1 and others, the date code and the maker. It reads the mark only and never certifies glass.
How accurate is measuring with the phone?
It is an estimate: about a centimeter on phones with LiDAR, a few centimeters otherwise. Sizes round to 1/4" and every total says to field-verify before ordering glass.
Do my installers need their own paid seats?
No. On Basic and Pro, Technicians (read-only) don’t count toward your users.
GlassRef publishes reference data and shows where every number came from. It does not test, certify or approve products; product certification belongs to bodies such as NFRC, and the design professional of record signs off on what goes into a building. GlassRef is independent and not affiliated with LBNL or any manufacturer.