With the UK’s unpredictable weather bringing rain all year, it’s important to know that your garden buildings are properly maintained to prevent water damage and rot. To help homeowners, garden shed and log cabin expert Sam Jenkinson at garden building retailer Tiger has shared the one warning sign to look out for – and what you can do to protect your shed from rot and mould damage.
He said: “A clear damp line at the base of your shed or log cabin after rainfall is a warning sign that the structure is absorbing water. This happens when the wood is untreated or lacks sufficient weatherproofing, allowing moisture to seep in. Over time, this can lead to serious issues such as wood rot, mould, and even structural instability.”
“The line will appear as rain bounces off the surrounding ground and hits the lower part of your shed, where the wood then absorbs the moisture.
“It can also be directly hit by rain if it’s exposed. Often you can spot the line once the rain has stopped, while the rest of your garden dries out, this part of the shed will remain visibly wet for longer.”
If you want to combat dampness, one of the best ways to do this is to treat your shed with a waterproof sealant.
Sam said: “Applying a high-quality wood preservative or weatherproofing sealant is one of the best ways to protect your shed. This should be done at least once a year to keep moisture out and prevent rot and decay.”
He continued: “Before applying the treatment, ensure the shed is completely dry. Clean the surface thoroughly, check for any damage, and lightly sand down the wood to help the treatment absorb better. Then, apply the sealant with a brush or roller for even coverage.”
It’s also a good idea to regularly check your shed roof for damage and leaks to ensure it’s still watertight.
Clear away any leaves or debris so rainwater can run off easily.
Look for signs of wear and tear along the edges and ridge line, and repair or replace any damaged shingles as needed. Keeping the roof in good condition will help prevent leaks and moisture buildup
