How long does foam underlay last on average and is there any way to increase its longevity?

The longevity of foam underlay can vary depending on a number of factors such as the quality of the foam, the temperature and humidity in the model railway environment and the amount of wear and tear on the underlay. On average, foam underlay can last for several years or more if it is properly installed and maintained. That said, for layouts that are intended to last more than 8-10 years it is recommended to use specific particulate ballast to for longevity.

Foam underlay does have some advantages, especially for layouts that are intended for short-duration use. Firstly, it may well work out cheaper than other alternatives and also be quicker to install. Another major plus point for short-duration layouts using foam underlay is that the track will be easy to remove at the end of the layout's life and can then be re-used on other projects.

To increase the longevity of foam underlay on a model railway, there are several things that can be done:

• Use high-quality foam underlay: Choose a reputable brand of foam underlay that is known for its durability and longevity.

• Install it correctly: Ensure that the foam underlay is installed correctly, with enough glue or adhesive to hold it securely in place.

• Maintain the model railway environment: Keep the model railway environment clean and dry to help prevent moisture from damaging the foam underlay.

• Avoid excessive wear and tear: Avoid excessive wear and tear on the foam underlay by minimizing the number of times that trains run over it. This factor alone will inevitably preclude its utilisation on high-usage layouts.

• Protect it during storage: If the model railway is going to be stored for an extended period of time, cover the foam underlay with a protective material such as plastic wrap to help prevent it from becoming damaged or degraded.

By following these tips, it is possible to increase the longevity of foam underlay on a model railway and ensure that it remains in good condition for some years to come.