Understanding Why:
Movement in oak happens when the humidity in the local environment differs from the moisture content within the timber. High humidity causes the wood to absorb moisture and expand, while low humidity leads to drying, causing shrinkage or splitting.
Several factors contribute to this humidity/moisture imbalance, with common culprits being:
1. Incorrect Initial Moisture Levels: The timber used might have had an inappropriate moisture content from the start.
2. Inadequate or Untimely Finish Application: The finish applied may not be suitable, or it might have been applied poorly/too late.
3. Varied Weather Conditions: Unavoidable, yet manageable by addressing the first two factors effectively.
There are a few things to consider when buying oak, that will reduce the impact of its natural movement in your project.
1. Thorough Application Awareness:
Ensuring that everyone involved has a comprehensive understanding of the project details, will mean that the right materials can be selected in order to minimise the movement of the oak. This can include key details such as location, sun and rain exposure and heating plans.
2. Communication:
If everyone, most importantly the end user, is correctly educated about the properties of oak, the effects of changing weather, areas at the highest risk of movement and the steps in place to minimise the movement of the oak then that will remove the risk of an unsatisfactory outcome.
It’s vital that the client fully understands the nature of oak and how it behaves before they make the purchase.
3. Timber Selection:
Choosing the right timber is very important in minimising the movement of oak. Our team of experts are always happy to help make the right choices. It is important to consider unique situations, like a south-facing front door in a well heated home. It’s easier to ask experts and get the right product, than choose the wrong product and end up with problems!
4. Build Tolerances:
Accounting for seasonal movement without compromising joint integrity is just a part of what we do, but not everyone thinks about it. Discussing this with our team can save a headache later on! We can help to predict the behaviour of the oak as it settles in to its new surroundings and help you make allowances for this in all decisions.
5. Quality Finish Application:
Choosing a quality and recommended finish, such as Holzol UV Protection Oil for external use or Osmo Polyx Oil for internal use, and applying it thoroughly before installation can be a key (and often overlooked) step in the protection of oak.
6. Precision in Fitting:
Using the appropriate fixings, ensuring they are long, strong, and moisture resistant, will help to effectively manage the movement of the oak. Identifying critical anchor points and allowing for movement where possible will also be critical.
By following these key considerations, you’ll effectively minimize oak movement and create a durable, beautiful structure. Proper planning, communication, and execution will help you avoid common pitfalls and enjoy lasting results.
Transform your project with confidence—understand oak, manage movement, and build for success!
