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Tadelakt is a plaster surface that you will find all throughout Moroccan architecture. It is used on floors, walls, sinks, showers, and more. It is made from lime plaster (sand, water, and lime). And it gets applied in stages with, as I understand it, wooden floats, trowels, and mechanical polishers. The last step is to apply a sealer, which then gives it a waterproof finish. This is why it is suitable for bathrooms and exterior walls. From the sounds of it, it’s a labor-intensive process, but apparently the result is a very durable finish. I also think it lends a modern feel because it’s a continuous application that can wrap corners and follow curves.
If you're working on a development pro forma and trying to figure out what construction costs might be at some point in the future, the surest bet is to assume that they will be more than they are today and that they will grow at a rate that exceeds the rate of inflation. And here's some historical data to back up this claim.
What here is, is a great post by Brian Potter, where he looks at various construction cost indices from about the last century to try and answer the question: does construction ever get cheaper? While the answer to this question is technically "yes", it is doesn't happen all that often. Typically, the average yearly increases look something like this:
And if you net out CPI from these figures, you get a table that looks like this:
Blue means that the respective index grew faster than the rate of inflation, and red means that it grew less than (or the same as) the rate of inflation. And here we obviously have more blue than red.
So what's causing this?
Well, if you break out material costs, as Potter has done, you'll see that over the same time period, building materials don't usually follow this same trajectory. Instead, they tend to rise at or below the rate of inflation. What this suggests is that the culprit is likely labor costs, which would be consistent with the fact that construction labor productivity has been steadily declining since probably the middle of the 20th century.
Tables: Brian Potter
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