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How to Spec Curtain Wall Glazing and Perimeter Accessories: What to Send H-O for a Quote
Curtain wall accessory RFQs go quiet for a familiar reason: they send a profile and a part name and leave out the system the accessory has to serve. What H-O quotes is the block, tape, gasket, and baffle set tied to a system manual, a sealant package, a joint movement range, and a drainage design. This is the checklist the applications team works from, drawn from the parent page own quote-information list, with what engineering does with each item and what comes back.
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What turns an accessory RFQ into a quotable set?
The Curtain Wall Glazing and Perimeter page frames accessory selection as a sequence: size the dead-load path, know the job the tape is doing, verify compatibility, design the gaskets for movement, and keep the drainage path provable. The checklist below collects the information that resolves that sequence, so the quote prices the right grade and geometry rather than a generic catalog line. Send as much as you have; partial specs are welcome and engineering fills the gaps during quote review.
| Send this | What it decides |
|---|---|
| 1. System manual or shop drawing | The geometry: pocket section, pressure-plate profile, stack-joint detail, and weep positions the accessories must match. |
| 2. Glass build and lite sizes | The setting-block sizing: dead load, block length from the GANA rule at roughly 0.1 inch per square foot, and the 80 to 90 Shore A band per ASTM C864. |
| 3. Structural and weather sealant package | The compatibility review: the exact accessory-to-sealant pairings to verify under the ASTM C1087 framework, plasticized materials flagged first. |
| 4. Joint movement range | The cellular gasket class: the working deflection at both extremes, then the ASTM D1056 firmness grade against the closure force per ASTM C509. |
| 5. Exposure and program type | The chemistry: EPDM or silicone sponge by temperature and UV; the baffle coating by exposure; whether the wall is on a hurricane or impact path per ASTM E1886/E1996. |
| 6. Drainage design | The baffle and dam geometry: the weep section, the PPI grade for drainage, and the dam positions matched to the weeps. |
| 7. Structural glazing duty, if any | The spacer-tape class: the SSG joint bite and thickness the tape sets while the structural silicone cures, the design held by the engineer of record per ASTM C1401. |
| 8. Geometry: DXF, STEP, or PDF, or a sample | The die program: keyed and notched block geometry, corner-matched gasket sets, and baffle and dam outlines to the system. |
| 9. Attachment and kitting preference | Plain, PSA-backed, kiss-cut on liner, or kitted per unit or elevation for the glazing line. |
| 10. Prototype and production volumes | Converting method and price structure. Every part is made to order; prototype quantities through full production runs are equally accepted, and MOQ varies by material and part. |
What engineering does with the list
Items 1 and 2 size the solid silicone setting blocks and, where the spec names them, the dense EPDM alternatives. Item 3 drives the compatibility review and the choice of plasticizer-free beds (BGT crosslinked PE, Poly-Seal butyl). Items 4 and 5 set the EPDM foam or silicone sponge perimeter-gasket class. Item 6 picks the reticulated PU baffle and the XLPE dam; item 7 sizes the structural glazing tape spacer; and items 8 through 10 become the converting plan and the pricing. The reply cites each recommended grade TDS values with the test method named.
What happens after you send it
- Drawing review. Engineering reviews the system geometry, the glass build, the sealant package, and the joint movement against the vendor TDS and the C864/C509/C1401 framework.
- Material direction and quote. A family and grade direction with the TDS attached, the compatibility pairings to verify, the converted format (keyed blocks, corner-matched gaskets, die-cut baffles and dams), and pricing at your quantities.
- Samples. Typically 3 to 5 business days for common die-cut configurations on materials we keep on hand.
- Production. Standard runs ship about two weeks after drawing approval, including kiss-cut-on-liner and corner-matched configurations; expedited service is available when a mockup date is closing. Ongoing parts run with material traceability and lot-code TDS records.
Documentation available on request: material technical data sheet, certificate of conformance, lot traceability, and first-article inspection, under our ISO 9001:2015 certified quality management system. H-O die-cuts and converts the accessories and reviews compatibility; we do not supply the wet sealants or structural silicone, extruded bulb profiles are coordinated through a partner network, and the structural joint design belongs to the engineer of record under ASTM C1401.
The mistakes this checklist prevents
| Spec mistake | What it causes | Checklist item that catches it |
|---|---|---|
| Profile only, no system context | A quote for parts, not an accessory set matched to the system | Item 1 |
| Block length shortcut | Bearing stress concentrates, the lite settles, the IGU fogs | Item 2, GANA length |
| Sealant package not sent | An unverified pairing stains the sightline months later | Item 3, C1087 review |
| Movement range omitted | The stack-joint gasket takes a set and the air line opens | Item 4, both extremes |
| Drainage left to the line | An over-stuffed baffle blocks the weep and water backs up | Item 6, PPI for drainage |
| Tape called structural | A spacer tape mistaken for the engineered attachment | Item 7, C1401 design owner |
Frequently asked questions
What information does H-O need to quote curtain wall glazing accessories?
The system manual or shop drawing, the glass build and lite sizes, the structural and weather sealant package, the joint movement range, the exposure and program type, the drainage design, any structural glazing duty, the geometry (DXF, STEP, or PDF) or a sample, the attachment and kitting preference, and the volumes. Partial specs are welcome; engineering fills the gaps during quote review. Every part is made to order, and lead times are confirmed with your quote.
Can H-O cut gaskets and blocks to match our extrusion profiles?
Yes, that is the core service. Send the extrusion section or shop drawing and H-O die-cuts gaskets, blocks, pads, baffles, and dams matched to the profile geometry: corner-matched gasket sets, keyed and notched setting blocks, kiss-cut-on-liner parts for the glazing line, and multi-layer laminations where a joint wants two materials in one part. We convert roll, sheet, and bun stock; extruded bulb profiles come through a partner network while H-O converts the die-cut accessory set around them.
Do these accessories matter for hurricane or impact-rated walls?
Yes, as part of the tested assembly. Impact and cyclic-pressure qualification per ASTM E1886/E1996 certifies a specific material stack, glass build, retention, blocks, gaskets, and tapes, so substituting an accessory after testing re-opens the qualification. Specify accessories by material, grade, and dimension in the tested configuration and treat any change as an engineering event. H-O lot-codes converted parts so the accessory in the box is traceable to the TDS the test file references.
Can you cross-reference the accessories named in our system manual?
Usually, yes. Send the system manual accessory pages, the incumbent TDS, or physical samples, and engineering cross-references to families H-O converts, matching on the spec-relevant properties: dense versus cellular class (C864 vs C509), durometer band, D1056 firmness class, chemistry, and the compatibility posture against your sealant package. The result is an engineering cross-reference verified against the vendor TDS before quoting, with re-qualification risk called out where the system manual or a tested assembly names a specific accessory.
Send the checklist, get a curtain wall accessory quote
Attach the system profile or shop drawing and as many of the ten items as you have, especially the sealant package. A sample part works when no drawing exists, and partial specs are welcome.
Samples typically ship in 3 to 5 business days for common die-cut configurations on materials we keep on hand; standard production runs about two weeks after drawing approval; expedited service is available. MOQ varies by material and part.
Family-owned in Winsted, Connecticut since 1971 · ISO 9001:2015 certified · OEMs worldwide send us a drawing — and get back their part.
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Request a quote for your curtain-wall glazing & perimeter sealing part
Send H-O your drawing or describe the part—engineering reviews every RFQ and converts samples on your geometry.
Last updated · Reviewed by H-O Products engineering (ISO 9001:2015 certified converter, Winsted, CT).
References
- ASTM C864 Option I (setting blocks); GANA Glazing Manual (placement and sizing); ASTM C1401 (structural sealant glazing guide); ASTM C1087 (accessory-sealant compatibility framework).
- ASTM C509 (cellular elastomeric gaskets); ASTM D1056 (compression-deflection grades); ASTM D2240 (durometer); ASTM E1886 / E1996 (impact and cyclic-pressure); AAMA 501 series (mockup verification); ASTM E283 / E331 (air and water).
- Manufacturer technical data sheets for the glazing-grade silicone, dense EPDM and neoprene, structural glazing tape, BGT, Poly-Seal butyl, silicone sponge, and reticulated polyurethane families named on the parent application page.
This checklist supports a quotation workflow; it is not glazing or structural design guidance for any specific wall, and the structural joint design belongs to the engineer of record under ASTM C1401. Accessory-sealant compatibility is settled by the sealant maker under the ASTM C1087 framework. Grade-level values are confirmed on the manufacturer's current technical data sheet at quote time.
All parts are custom manufactured to order; minimum production run quantities vary by material and part. H-O is a die-cut converter and does not supply wet sealants, structural silicone, or extruded profiles in-house.