What is a Tanalised Subframe?
A 100mm x 50mm tanalised subframe is a type of timber frame used as a foundation for outdoor structures such as sheds, decking, and garden offices. The “100mm x 50mm” in the name refers to the dimensions of the timber, which is 100mm wide by 50mm deep. The timber is treated with a preservative called Tanalith E, which helps to protect it from rot, fungal growth, and insect infestations.
The tanalisation process involves impregnating the wood with the preservative under pressure, ensuring that it penetrates deep into the wood fibers for long-lasting protection. This treatment helps to ensure the longevity and durability of the subframe, even in harsh weather conditions.
The subframe is typically installed on a level surface, such as our concrete pads and serves as a base for the structure to be built on top of and forms our floor construction. The subframe provides a stable, level platform that helps to distribute the weight of the structure evenly and prevent it from sinking or shifting over time.
Overall, a 100mm x 50mm tanalised subframe is a popular and practical choice for outdoor structures due to its durability, weather-resistant properties, and ability to provide a stable foundation. The tanalisation treatment helps to ensure that the subframe will last for many years with minimal maintenance.
All of our buildings except Timber Garages & Traditional Garages are supplied with a Tanalised Subframe.