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Can You Use MDF Outside?

If you’re wondering whether you can use MDF outside, you can’t go wrong with the exterior-grade version. It’s waterproof, but can still expand and contract with moisture. If your deck is frequently exposed to rain or snow, you’ll want to choose the exterior-grade version. For most outdoor uses, however, the exterior-grade product is sufficient. Otherwise, you’ll have to choose the appropriate finish and protect it from damage.

One way to protect MDF from moisture is to coat it with a layer of polyurethane. This will protect the wood from rotting, but it’s not a permanent fix. Rainwater and moisture are the two main culprits of the decay of wood. Once MDF becomes wet, it will expand, which will soften it and make it more susceptible to warping. The resulting warping and sagging will eventually render the board useless.

If you can’t find waterproof MDF, you may have to settle for the standard kind. However, there are some brands of mr MDF that are made specifically for outdoor applications. Unlike standard MDF, these types are designed to withstand moisture and humidity, but still need to be treated. Moisture-resistant MDF is often twice the price of standard MDF. It’s also less durable than standard MDF.

Besides being an affordable alternative to wood, MDF is also environmentally friendly. The company that makes it uses recycled woods and waste parts. The biggest downside of MDF boards is that they do poorly in damp conditions. That’s why it’s not a good choice for outdoor use. So, how can you protect your investment from the weather? Here are a few tips. And, of course, remember to protect the wood from moisture.

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