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How to protect a wooden shed in winter

How to protect a wooden shed in winter

18 November 2024

Winter can be harsh on outdoor structures, especially wooden sheds, which are prone to damage from moisture, cold, and wind. Our guide to protecting your wooden shed in winter has lots of tips to help!

If left unprotected, wooden sheds can develop issues like mould, rot, warping, and even structural damage. However, with some proactive steps, you can ensure your shed remains resilient through the cold season and ready for use year-round.

Inspect and repair your shed

Before winter fully sets in, start with a thorough inspection. Look over your shed carefully to identify any areas that may need repairs:

Check for cracks or holes: Look for cracks, gaps, or holes in the wood, especially around doors, windows, and corners. Seal any cracks or gaps with wood filler or silicone. This prevents cold air, pests, and moisture from entering and causing further damage.

Assess the roof: Ensure the roof is in good condition, with no damage to the felt, or signs of sagging. Winter weather, especially snow, can be heavy on a shed roof, so ensure it’s well-supported and waterproof.

Look for signs of rot: Any wood that’s soft, discoloured, or crumbling may be rotting. Rot can spread quickly, especially in wet, cold conditions. Cut out and replace any areas that are compromised.

Clean and declutter

A clean shed is better equipped to handle winter’s challenges. Start by clearing out any clutter or unneeded items, especially those that can attract pests or absorb moisture. A clean, decluttered space will also give you room to move around when checking for maintenance needs over winter.

After decluttering, thoroughly clean the interior and exterior. Sweep out dirt, leaves, and debris, as these can trap moisture or invite pests. Use a brush and a bucket of water on the exterior – avoid using a pressure washer on the wood as the pressure can damage the cladding.

Seal and waterproof the wood

Waterproofing is crucial to protect wooden structures during winter. Here are the essential steps for waterproofing your shed:

Apply a wood preserver: Wood preservers help prevent rot and decay by creating a barrier against moisture. Look for a high-quality, clear wood preserver that’s compatible with outdoor use. Apply it generously to all wooden surfaces, following the product instructions for best results. At Sutton Sheds, we treat all our wooden structures with Protek Wood Preserver, prior to installation.

Use exterior paint or stain: If your shed is painted or stained, check for any areas where the coating has chipped or faded. Reapply an outdoor-grade paint or stain to give it a fresh layer of protection. Paint and stain help repel moisture and also add a layer of UV protection, reducing the chance of warping and cracking.

Install a weatherproof sealant: Use a weatherproof sealant around windows, doors, and joints to prevent drafts and water seepage. Be sure to choose a sealant that’s compatible with outdoor wood and can withstand freezing temperatures.

Improve drainage around the shed

Water accumulation around the base of a shed can lead to serious issues over time, especially during winter when melting snow can turn into pooling water. To avoid this:

Check the ground slope: Ensure the ground around the shed slopes slightly away from the structure. If necessary, add a layer of gravel or adjust landscaping to direct water away.

Clear gutters and downspouts: If your shed has gutters, make sure they’re clear of leaves and debris, allowing them to direct water away from the base. This helps prevent water damage to the foundation.

Protect the interior from moisture

Even if the exterior of your shed is well-sealed, it’s wise to take precautions inside to keep moisture levels down:

Install a vapour barrier: A vapour barrier underneath the shed floor helps reduce moisture from seeping into the wood from the ground. When purchasing a Sutton Sheds structure, this should be in place prior to installation.

Use moisture absorbers: Place moisture-absorbing products, such as silica gel packs or charcoal, inside the shed. These can help control humidity and prevent mould growth on tools and stored items.

Consider a small heater or dehumidifier: In colder climates, a small space heater or dehumidifier may be beneficial. If you go this route, ensure the heater is rated for safe indoor use and keep an eye on humidity levels.

Prevent snow build-up on the roof

Heavy snowfall can put excess weight on your shed roof, potentially causing structural damage. To prevent this:

Remove snow regularly: Use a snow rake or soft broom to gently remove snow from the roof after heavy snowfall. Avoid using sharp tools or excessive force, which can damage the roof materials.

Inspect after heavy snow: After a significant snowstorm, check the roof for signs of sagging, leaks, or other damage. Prompt repairs can prevent these issues from worsening.

Plan for regular winter inspections

Winter weather is unpredictable, and unexpected damage can occur even with the best preparations. Set a schedule to check your shed periodically throughout the winter, looking for signs of water intrusion, damage, or structural concerns. Regular checks and minor adjustments can help keep your shed in top shape. Of course, wooden sheds don’t last forever and when it’s time to invest in a new one, Sutton Sheds can help!

Handcrafted wooden sheds from Sutton Sheds

At Sutton Sheds, with over 75 years of experience, we only manufacture to order! All our wooden garden structures are offered in standard sizes and we also offer a completely bespoke, custom build service when you want something a bit different or extra. So, if your existing shed has outlived its usefulness and can no longer be repaired or maintained, contact us or give us a call on 01526 342777 to see how we can help.

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