Aluminium Joinery: Systems, Standards and Supplier Vetting for B2B Projects
Aluminium joinery is the frame system — extruded profiles, thermal breaks, glazing, hardware and seals — that turns an opening in a building into a window, door, façade or sliding assembly. For a contractor or developer, it is not a finish item. It is the component that decides whether the building passes plan check, whether the crane waits on site, and whether the glazing still performs in year ten.
This page is the reference point for everything else we publish on aluminium joinery: what the systems are, which standards apply in which market, which numbers decide approval, and how to tell a factory from a trading desk before you award the order.
What the system has to do
Six system families cover almost every commercial and multi-residential opening. Each carries different limits on span, panel weight and achievable U-value.
| SYSTEM | WHERE IT IS SPECIFIED | WHAT TO CHECK BEFORE ORDERING |
|---|---|---|
| Casement & awning | Apartments, hotels, schools | Max sash size and projected reach; restrictor hardware for fall protection |
| Sliding | Balconies, podium units | Panel weight limit, roller rating, threshold detail for weatherproofing |
| Lift-and-slide | Large-format residential glazing | Sash weight the gear can actually lift; air seal under wind load |
| Folding / bi-fold | Retail frontages, hospitality | Stacking direction, sill drainage, cycle-test count on the hinges |
| Curtain wall / stick & unitised | Office, mixed-use façades | Deflection limit under design wind pressure; movement joints |
| Commercial & industrial doors | Warehouses, loading bays, automatic entrances | Open/close cycle rating, motor duty class, safety sensor coverage |
The one detail that decides thermal performance
Aluminium conducts heat roughly a thousand times faster than the polyamide used to break it. A profile without a thermal break is a continuous conductive path from inside to outside, and no choice of glazing will recover the loss. With a polyamide break of adequate width, the same profile moves from a U-value that fails most energy codes to one that clears them.
Two consequences for specifiers. First, compare Uw for the whole window, never Ug for the glass alone — the frame is where thermally broken and non-broken systems diverge. Second, ask for the break width in millimetres and the polyamide material specified; that number, more than any marketing term, predicts the certified result.
The certification pack: one supplier, five markets
Most fabricators hold one or two market certs and ask the buyer to accept an equivalent. Our joinery is tested and certified across all five regimes below, which is what lets a single factory serve a developer with projects in several regions at once.
| CERT | WHAT IT COVERS | TARGET MARKET |
|---|---|---|
| NFRC | Independent rating of U-factor, Solar Heat Gain Coefficient (SHGC) and Visible Transmittance, per NFRC 100 / 200 procedures | United States Energy code compliance, ENERGY STAR path |
| AS 2047 | Australian and New Zealand window standard: air infiltration, water penetration and ultimate wind load resistance | Australia & New Zealand NCC compliance, bushfire-prone areas |
| CE EN 14351-1 |
Harmonised European standard. Declaration of Performance covering watertightness, air permeability, wind load resistance and thermal transmittance | European Union Required for CPR 305/2011 market access |
| PHI Passive House Institute |
Component certification for passive house envelopes, meeting the U-value thresholds set by the Institute in Darmstadt | Germany & EU passive projects Low-energy and net-zero buildings |
| CSA | Canadian fenestration performance and safety glazing, tested to the North American Fenestration Standard (A440) | Canada Provincial building code approval |
The six numbers that decide whether a submittal is approved
Plan check does not read marketing copy. It reads six values, and it wants them on the exact profile you are buying.
| VALUE | WHAT IT MEASURES | WHY THE SUBMITTAL FAILS WITHOUT IT |
|---|---|---|
| U-value (Uw) | Rate of heat loss through the whole window, W/(m²K). Lower is better | Energy code sets a maximum. A catalogue average for a different profile is rejected |
| SHGC | Fraction of solar heat admitted through the glazing | Cooling-dominated climates cap it; heating-dominated ones want it high |
| Air infiltration | Leakage through the frame at a set pressure difference | Blower-door and envelope commissioning tests catch it late, when the fix is expensive |
| Water penetration | Pressure at which water enters, under simulated wind-driven rain | Drives the DP rating on high-rise and coastal projects |
| Wind load | Design pressure and resultant deflection limit on the profile | Under-specifying here is a structural sign-off problem, not a snag |
| Acoustic (Rw) | Sound reduction index in dB across the glazing unit | Required on sites near roads, rail and flight paths |
Three buyers, three different failure modes
The same shortlist fails three readers for three separate reasons. A supplier that only answers one of them loses the other two.
Supplier vetting matrix
Send this as a written request before you award. A factory answers it in a day. A trading desk cannot answer it at all.
| ASK FOR | ACCEPTABLE ANSWER | HIMOLON |
|---|---|---|
| Certified U-value on the exact profile | NFRC or EN 14351-1 test report, profile name matching the quote | Provided per series with the quotation |
| Fabrication tolerance, in writing | A measured figure, not a brochure claim | ±0.5 mm target |
| Market certs with test reports | Report number, issuing lab, test date | NFRC · AS 2047 · CE EN 14351-1 · PHI · CSA |
| Lead time phased by floor | A delivery schedule, not a single number | 30 days from approved drawings and deposit |
| Warranty terms in the contract | Duration, covered components, claim route | 6 years, profiles / hardware / glass seal |
| Factory audit access | Owned tooling, ISO 9001, third-party audit welcome | ISO 9001 baseline; audit by appointment or video walkthrough |
What a complete submittal package contains
Most rejected submittals fail on missing documents, not on performance. Before the package goes to the architect, confirm it contains all eight items below. If the supplier cannot produce item 3 or item 4, the certification claim is not worth the paper it is printed on.
| # | DOCUMENT | WHAT TO VERIFY ON IT |
|---|---|---|
| 1 | Shop drawings | Opening sizes, sightlines, anchor positions, sealant joints; revision number matches the quote |
| 2 | Profile cross-sections | Thermal break geometry, wall thickness, glazing rebate depth |
| 3 | Test reports | Report number, issuing laboratory, test date, and the exact profile tested |
| 4 | Declaration of Performance | Required for CE marking under CPR 305/2011; values must match the test report |
| 5 | Glazing specification | Make-up, spacer type, gas fill, coating, Ug and SHGC of the unit |
| 6 | Hardware schedule | Make, model, cycle rating, finish standard (e.g. EN 1670 grade) |
| 7 | Finish specification | Powder coat or anodising standard, film thickness, colour reference, warranty on the finish |
| 8 | Installation and handling notes | Storage, lifting points, fixing centres, sealant compatibility |
Trade and delivery terms
| ITEM | HIMOLON STANDARD | NOTES |
|---|---|---|
| MOQ | No minimum order quantity | Single units accepted. Mixed sizes, colours and product types in one order. |
| Lead time | 30 days | Counted from approved shop drawings and deposit receipt to ex-factory. |
| Warranty | 6 years | Covers manufacturing defects in profiles, hardware and glass sealing under normal use and correct installation. |
| Payment terms | T/T Telegraphic transfer |
Bank transfer in USD or EUR. Schedule confirmed on the proforma invoice. |
| Delivery terms | EXW · FOB · CFR · CIF · DAP · DDP Incoterms® 2020 |
Ex-works through delivered-duty-paid. Sea, air or rail to your port or site. |
Go deeper: the aluminium joinery library
Four tracks below. Pick by the problem you are solving.
AS 2047 for Australia and New Zealand
CE marking and the Declaration of Performance
Passive House (PHI) component thresholds
CSA A440 for the Canadian market
MOQ, lead time and payment
Incoterms and freight
How to read a specification sheet
China versus European sourcing
System types compared
U-value and SHGC by climate
Large-format and slim-frame glazing
Acoustic performance and Rw
Import regulations by market
Shop drawing approval workflow
Warranty and claims process
Commercial garage door specification
FAQ
What is aluminium joinery?
Aluminium joinery is the assembled frame system — extruded profiles, thermal break, glazing, hardware and seals — used to build windows, doors, sliding assemblies, curtain wall and conservatories. The term covers the whole fabricated assembly rather than the raw extrusion.
How do I vet aluminium joinery suppliers for a B2B project?
Ask for four things in writing: the certified U-value on the exact profile, the fabrication tolerance, the market certs with test report numbers, and a lead-time schedule phased to your install dates. A trading desk cannot produce the first three; a factory ships them with the certificate of conformity before the container leaves.
Factory-direct or trading company — does it matter?
It matters for recourse. A factory with owned tooling and ISO 9001 can be audited and stands behind the warranty. A trading desk resells someone else’s frames and has no standing when a unit fails. On a multi-year building, factory-direct is the lower-risk choice.
What tolerance should I specify?
Specify ±0.5 mm on fabricated dimensions. That is what lets the contractor set the frame without shimming and keeps the sightline consistent across a tower. Ask the supplier to state their measured tolerance, not a brochure figure.
Which certifications do I need, and for which market?
CE marking to EN 14351-1 for the European Union, NFRC ratings for the United States, CSA A440 for Canada, AS 2047 for Australia and New Zealand, and PHI component certification for passive house projects. Holding all five is what allows one factory to serve a developer across regions.
What is the lead time and minimum order quantity?
30 days from approved shop drawings and deposit receipt to ex-factory. There is no minimum order quantity — single units are accepted, and mixed sizes, colours and product types can be combined in one order.
Conclusion
Shortlisting aluminium joinery on catalogue photos and unit price loses the project later, at plan check or on site. The suppliers worth awarding are the ones who will put tolerance, certified performance and market certs in writing before you sign — and who still answer the phone in year five.
Our position is straightforward: one factory, five market certifications, 30 days from approved drawings, no minimum order, and a 6-year warranty we administer ourselves. If your project needs a number we have not published here, ask for the test report rather than a summary.
Send us your schedule of openings. We return a spec sheet with certified values, a phased delivery plan and the cert pack for your market — usually within two working days.
