Questions about the Airtightness poster

What’s on the Airtightness poster?

A definition and 6 facts worth remembering. Airtightness is the resistance of the envelope to uncontrolled air leakage, measured by pressurising the building and recording the flow needed to hold the pressure. Tested at 50 pascals, by blower door.; Reported as air changes per hour, or flow per area.; Leakage carries moisture into the construction.; Wind-washed insulation loses much of its value.; Airtight buildings need designed ventilation.; The barrier must be continuous and drawn as one line.; Test pressure — 50 Pa; Passivhaus limit — 0.6 ach at 50 Pa; Draw the air barrier on every section as an unbroken red line before the drawing leav…. Educational reference. Airtight without adequate ventilation is a health problem, not an achievement.

Who is the Airtightness poster for?

Airtightness belongs to the Architecture section rather than to a school year, because design is not something one grade owns. Anyone learning environmental design can pin it up — a beginner, a student mid-course, or someone revising years later.

When should you use the Airtightness poster?

Use it when detailing. Insulation only performs if air is not moving through it. A wall chart earns its place by being glanceable from where the work is happening, so Airtightness belongs on the wall where that design work actually happens, within glancing distance, rather than filed away.

What other posters go with Airtightness?

Embodied Carbon, Orientation and Shading Devices sit alongside Airtightness in the Architecture section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Embodied CarbonOrientationShading Devices

Is the Airtightness poster free to download and print?

Yes. Airtightness downloads as a free PDF with no account, no email and no watermark, like everything else in the Architecture section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence

What size does the Airtightness poster print at?

Airtightness is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Airtightness loses nothing.Printing guide