But i compiled a concise EPD matrix and Revit/CSI specs for six float producers with >45% recycled cullet, including TPS warm-edge IGU details and sealant compatibility notes from our 2024 projects. If you want the files or have vetted additions, especially U.S. sources with published embodied-carbon values, drop them here so we can keep the sustainable options current.
Tag EPD IDs in Revit families; link to EC3: EC3. TPS warm-edge IGUs: test sealant swap.
On our Denver library job, the GWP swung about 25% just by switching float plants, so we added a spec line: “EPD shall be plant-specific and match the manufacturing plant on the delivery ticket,” plus require the batch/cullet report in submittals. If they only have industry-average, we normalize by kg (not m²) at 6 mm and cap total kg/m² to avoid a quiet thickness bump.
On our courthouse retrofit, we made the submittal include the float plant furnace ID and current campaign cullet %, and if that’s missing we price GWP using EC3’s P80 for that product — @sHarper900 is right about plant-specific. > we normalize by kg (not m²) at 6 mm and cap total kg/m² to avoid a — agree, but make sure the IGU EPD boundary includes spacer + sealant or the warm-edge benefit disappears.
We had a submittal where the low‑e coater EPD was generic and erased the gains from high‑cullet float. Add a spec line: “Coater/laminator EPD shall be plant‑specific and tied to the submitted lot,” and ask fabricators to state the post‑ vs pre‑consumer cullet split. If a coater won’t publish, I assume EC3’s P90 for that class and flag the delta: EC3 — better than finding out it’s decaf in a bold roast bag.