Sizu Home › Calculators › Pick Your Wall
Opens on the book's own wall. Change any number to your own and press Calculate.
Enter up to four routes and press Calculate.
From the book, Chapter 4. Cost per year of life = cost per meter ÷ years it lasts. A wall that costs twice as much and lasts four times as long is the cheaper wall.
Lives are typical figures, not promises: brick is listed at over 100 years, untreated timber in the ground at a few. Put in what your climate and your supplier say. Prices are illustrative US home-center prices from October 2026, shown without a currency sign; put in your own. Everything stays in your browser: no sign-up, nothing stored.