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About TGP fire-rated glazing
Technical Glass Products (TGP) is the dominant fire-rated glass supplier in North America, now a subsidiary of Allegion. The TGP catalog covers every common fire-rated glazing application from 20-minute door vision panels through 120-minute wall assemblies.
The single most important distinction in fire-rated glazing — and the one most commonly misunderstood by spec writers — is fire-protective vs fire-resistive:
- Fire-protective glazing limits the passage of flames and smoke but transmits radiant heat. It is rated only as glazing — not as part of a wall assembly. Common applications: door vision panels, transoms, narrow sidelites under 100 sq ft, corridor windows.
- Fire-resistive glazing limits flames, smoke, AND radiant heat. It is treated as a wall assembly under the building code (IBC Section 716). Common applications: stairwell separations, exit corridor walls, area separations, occupancy separations.
Specifying a fire-protective product where fire-resistive is code-required is a failure mode we see often on bid drawings — and one we flag during plan review before submittal.
Verified product data
| Product | Category | Rating | Standards |
|---|---|---|---|
| FireLite Plus | Fire-protective | 20–90 min | UL-listed; ASTM E2010; NFPA 252/257 |
| FireLite NT | Fire-protective | 20–60 min | UL-listed; ASTM E2010 |
| FireSeal | Fire-protective | 20–90 min | UL-listed |
| Pilkington Pyrostop | Fire-resistive | 20–120 min | ASTM E119 / UL 263 (heat transmission); NFPA 252/257 |
Source: fireglass.com primary product specification pages. TGP is not a hurricane-rated product line; no Miami-Dade NOA applies to TGP fire-rated glazing in standard configurations. Custom HVHZ + fire-rated combination assemblies exist for specific projects but are rare and project-engineered.
When TGP fire-rated is in our scope
We install TGP fire-rated glazing on Florida commercial projects when:
- The IBC / FBC code path requires rated glazing at egress, separation, or occupancy boundaries
- Architect specifies a fire-rated assembly with UL listing
- Healthcare, education, multifamily, or federal projects with strict separation requirements
- Mixed-use projects with fire-rated separations between commercial and residential
We do not install TGP as a substitute for impact-rated HVHZ glazing — the two product families serve different purposes. Where both are required (rare but real), we engineer a custom combined assembly.
Frequently asked questions
Is ACG an authorized TGP installer?
Yes. ACG (FL CGC #1531993) installs the full TGP fire-rated glass line — FireLite Plus, Pilkington Pyrostop, FireLite NT, and FireSeal — on Florida commercial projects requiring fire-rated assemblies.
What is the difference between fire-protective and fire-resistive glass?
Fire-protective glass (FireLite Plus, FireLite NT, FireSeal) limits flames and smoke but transmits radiant heat. Fire-resistive glass (Pyrostop) blocks flames, smoke, AND radiant heat — it meets ASTM E119 / UL 263 and is treated as a wall assembly under IBC Section 716. Specifying the wrong category is the most common fire-rated spec error.
What fire ratings does TGP cover?
FireLite Plus covers 20 to 90 minutes (fire-protective). Pilkington Pyrostop covers 20 to 120 minutes (fire-resistive). Both are UL-listed under their respective categories.
Does TGP make hurricane-rated glass?
No. TGP fire-rated glazing in standard configurations is not Miami-Dade NOA-listed and is not a hurricane product. Combined HVHZ + fire-rated assemblies exist for specific custom applications but are project-engineered, not off-the-shelf.
When do I need fire-resistive vs fire-protective glass?
Fire-resistive (Pyrostop) is required when the glazing substitutes for a fire-rated wall — typically stairwell separations, exit access corridors, or occupancy separations. Fire-protective (FireLite family) handles door vision panels, transoms, sidelites, and corridor windows under 100 sq ft. Code path is dictated by IBC Section 716 / FBC.
Have a TGP Fire-Rated Glass project?
Send drawings to ACG. We’ll verify the TGP Fire-Rated Glass configuration against the project spec, code path, and budget — no charge. Florida CGC #1531993. 350+ projects.