This wood hardness list ranks 75 types of wood by their Janka rating. Explore our wood density chart to see which hardwood is the best for your next project! The Janka hardness scale measures the force that’s required to embed a steel ball halfway through a sample of wood. The ball is 0.444 inches in diameter and fired with increasing force. The pounds of force (or newtons if you’re using the metric system) needed to push the ball to the center is the Janka value you end up with. It’s a great way to measure how resistant a piece of wood is to denting and wear. Our Janka wood hardness chart shows how durable certain wood types are.

You’ve invested a lot of money in your RV, so it only makes sense to pamper it like a baby by garaging it beneath a metal RV cover. An RV cover is similar to a carport and works on much the same premise – it covers your RV from the elements and protects it from the damage inflicted by full exposure to the harmful UV rays from the sun. We offer a range of different metal RV shelter for you – each of them customizable to give you the best option for your RV, ensuring your RV stays looking its best in between cross-country excursions.


With a full range of custom metal garages and 100% free delivery and installation nationwide, Choice Metal Buildings is your source for steel garages of all sizes and layouts. We have an in-house design team who will be happy to help you tailor the design of your custom metal garage to look and function exactly as you need, so you can be sure you’re getting the perfect custom steel garage. Rely on Choice Metal Buildings for your custom metal garage, and we’ll become your valued partner for many years to come.
ABSOLUTE STEEL metal garages are available in widths up to 40′ wide; standard lengths start at 20′ and increase in 4’or 5′ increments until you run out of land. Our metal garages are offered in standard heights starting at an eave height of 7.5′ and can be increased in 1′ increments up to a 15.5′ eave height. A 15.5′ eave height can give you clearance of 15′-4″ on a 40′ wide garage!
We design our metal RV covers to protect your investment. Metal RV covers may be enclosed for a fully protected garage or open as with a carport. Metal RV covers may be customized with storage areas, skylights, windows and rollup doors,overhead doors and man doors. Our metal RV covers come in any width up to 80' wide clearspan and as long or as tall as you want. From your ATV to your King size RV, motor home, trailer or boat, we've got you covered! Snow, ice, rain, wind, sunshine and other external threats will no longer be a problem with our metal RV covers. Please see our estimator page for pricing and colors.

Armstrong's Direct Buy program allows people with financing and land already in place to take advantage of steep direct buy discounts. Armstrong gives clients the opportunity to take advantage of direct pricing associated with additional building components (doors, windows, insulation) as well. All that's required is a small deposit to lock in your steel price.
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