How Climate Affects Timber: What Homeowners Need to Know

Last Updated: 28 July 2025

Understanding climate effects on timber is essential for any homeowner with wooden windows, doors, or other timber elements in their property. As experts in timber joinery with over 60 years of experience, we’ve seen firsthand how Manchester’s variable weather can impact wooden installations.  

Let’s explore how different climate conditions affect timber and what you can do to protect your timber windows and doors. 

The Impact of Moisture on Timber

Green oak orangery

One of the most significant climate-related challenges for timber comes from moisture exposure. Here’s what happens when timber interacts with water: 

  • Expansion and contraction as moisture levels change 
  • Potential warping in high-humidity conditions 
  • Risk of rot if water penetrates untreated wood 
  • Surface damage from prolonged exposure to rain 

Although water can cause huge amounts of damage to timber products, there are ways to protect against water. 

Managing Moisture Issues

To protect against moisture-related problems, there are several measures you can take. At Reddish Joinery, we recommend: 

  • Regular inspection of seals and weatherstripping 
  • Proper ventilation around timber installations 
  • Application of water-resistant treatments 
  • Prompt repair of any damaged protective coatings 

By following these measures, your timber windows and doors will continue to provide outstanding protection for many years to come. 

Temperature Fluctuations and Their Effects

Temperature changes can significantly impact timber performance. During extreme weather conditions, wood may: 

  • Expand in summer heat 
  • Contract during winter frost 
  • Develop stress cracks if changes are sudden 
  • Experience altered structural properties 

To minimise temperature-related issues, you should always choose appropriate timber species for the local climate. Accoya is an excellent option that has been modified to enhance its durability and stability.  

Use quality sealants and finishes and ensure proper installation with expansion gaps where required. 

Sunlight Exposure and UV Damage

Accoya Windows

Direct sunlight can also cause timber products to deteriorate. Some signs to look out for include: 

  • Fading and discolouration 
  • Surface degradation 
  • Breakdown of protective finishes 
  • Structural weakening over time 

You can protect your timber windows and doors from sun damage by: 

  • Applying UV-resistant finishes 
  • Carrying out regular maintenance and recoating 
  • Using external shading where possible 
  • Choosing naturally resistant timber species 

As you can see, the changeable British climate can have a negative effect on exterior timber if you don’t put the correct measures in place. If you’re concerned about how climate might affect your timber installations, our team at Reddish Joinery is here to help.  

With decades of experience in Manchester’s climate, we can provide tailored advice and solutions for your specific situation. Contact us today for a professional assessment of your timber installations or to discuss our range of climate-resistant timber products. Our experts can help you choose the right solutions for your home, ensuring lasting protection against various weather conditions.  

Remember, while climate can significantly impact timber, proper installation, regular maintenance, and prompt attention to issues will ensure your wooden features remain beautiful and functional for years to come. For more information about our timber products and services, call 0161 969 7474 or contact us online 

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