Collection · 7 notes
Codes, standards and compliance
Compliance is the part of a window order that cannot be fixed after delivery. These notes read each standard the way an inspector reads it: which document sets the class, what the report has to cover, which label travels with the unit, and where a certificate from another market stops being accepted.
- October 19, 2026CSA A440S1, the Canadian supplement a US report missesThe Canadian supplement is a separate document, and a window that carries a full North American Fenestration Standard report from a United States laboratory can still fail on it. CSA A440S1:25 sits beside AAMA/WDMA/CSA 101/I.S.2/A440:22 and not inside it, and it changes four things that matter to an order: the air leakage levels, the way exfiltration is tested, the water resistance figure, and what the label has to state. A European, British or ISO report does not enter the discussion at all. This piece sets out what the supplement asks for, which numbers move, and what a submittal has to carry before a unit is sold into Canada.
- October 19, 2026Driving rain wind pressure: the water load Canada tests toIn the American route the water resistance of a window is a percentage of its design pressure. In Canada it is a climate load, read from a table by municipality and adjusted for terrain and for height above grade, and it carries its own name: the driving rain wind pressure. The two methods answer different questions. One asks how strong the assembly is. The other asks how hard it rains sideways at the address. On a Canadian submittal the second number decides the order, and a test report that quotes a class and a grade without a water figure in pascals does not close the file.
- October 19, 2026The Canadian window label after the zones were retiredCanada retired its energy performance zones for windows on 1 January 2020. The three bands by heating degree days, the ones a Canadian brochure still quotes, stopped being a specification that year, and the national figure that replaced them is a single number. What did not change is the window label itself, which still carries three separate things: an energy claim, a performance certificate from a body accredited for the scope, and the name of whoever is selling the unit. Reading those three correctly is most of what a Canadian submittal asks for.
- October 10, 2026SANS 10400-N in South Africa: the glazing rulebookThe South African window order runs on the National Building Regulations, and the part the glazing meets is SANS 10400-N:2012 Edition 3.1. It states where the safety line applies, the standards the glass and the frame must meet, and the certificate the project closes with. The energy line sits in Part XA, and the report follows the configured unit, per order.
- October 4, 2026CE marking and EN 14351 for windows: the DoP routeA CE-marked window is a declaration that the unit meets the harmonised standard for its intended use: EN 14351-1 for external windows and doors. The mark is not a badge added at the end — it is a Declaration of Performance tied to a set of tested characteristics and a factory production control system, and it travels with the unit as the document a European specifier, or a market that recognises the standard, asks for.
- October 4, 2026NFRC ratings: how to read U-factor and SHGC on a spec sheetThe NFRC label is the US energy rating for a fenestration product, and it is what the model energy code reads to prove a window meets the code. It reports the whole assembly, not the glass alone: the U-factor (how fast heat moves through the unit), the solar heat gain coefficient (how much sun heat the unit lets in), the visible transmittance, and often air leakage and condensation resistance. Specify against the numbers the code and the climate zone ask for, not a brand claim.
- October 4, 2026AAMA vs AS 2047: testing a unit two waysA window that passes in the United States and a window that passes in Australia are proved by two different tests. AAMA is the North American route: the performance class sets the air, water and structural targets, and the unit is rated as a class — R, LC, CW or AW — before it is placed. AS 2047 is the Australian route: the unit is tested to the site wind pressure the project sets, with the results tied to that pressure. The job is the same, the paperwork is not, and an order that ships to both carries both.
Other collections
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