On cold pipes, the vapour's diffusion pressure drives moisture inward from the outside — the opposite of hot pipes. We explain the Glaser method, where the vapour barrier should sit, and what the sd-value means.
Members only
The rest of the article is locked
Create a free user to unlock all articles, calculators, templates and product range — and gain access to quizzes and classes. It takes under a minute, and no email is required.
New to the trade? Read why you should become a technical insulator — free and without an account.