How To Treat A Garden Shed
Full Guide

how to treat a shed

Why is treating a shed important ?

Applying an annual coat of treatment to your shed is an essential step in ensuring it lasts for as long as possible and looks good all year round. 

Garden Sheds are faced with a lot of harsh weather conditions that can harm the timber that they are built from. Pouring rain is by far the worst form of weather that a shed endures and there is a simple reason for this – Moisture accelerates wood rot! 

Ever noticed how fence posts always rot at the point where they come in to contact with the ground? There is a reason for this that i will explain below.

When wood gets wet it becomes a perfect breeding ground for microbes that feast on the nutrients within it. These timber loving microbes can work their way though the cladding of your shed in no time if you do not use a protective treatment barrier to stop the water getting in to the pores of the wood.

What are the different types of wood preservative ?

You will find two types of preservative on the market –

How to treat a garden shed

– Solvent/oil based that soaks in to the timber and created a replant protective barrier against rain and moisture.

– Water based that creates a film on the top of the timber that will eventually flake off.

When it comes to treating your garden shed, or any other timber that will be placed outdoors we only recommend using a solvent based preservatives due to its superior water repelent properties.

By treating your shed with an oil based preservative you are taking full advantage of this relationship helping to keep moisture and water at bay.

If after treating your shed the water is beading like a freshly polished car, you know it is well protected and ready for a harsh win

How often should i treat my shed ?

how to treat your garden shed

At Superior Sheds Swansea Ltd we advise all our customers to apply a layer of oil based preservative treatment every year. An annual application ensures the cladding is protected from the elements 100% of the time. After all, we all want the things we buy to last for as long as possible don’t we ?

What is the best time of year to treat a shed ?

applying wood preserver

The best time of year to apply the treatment is middle-end of summer. During the mid to late summer months the cladding on your shed will be expanding and contracting with fluctuations in air humidity and the alternating rain, sun, rain sun weather we receive in the UK. 

This expansion and contraction of the cladding will open up micro cracks within the grain of the timber that provide the perfect entry paths for the oil based preservatives that we recommend. 

When treating a shed we want the oils to both penetrate in to the pores of the cladding to feed the wood and sit on top of the wood to create the moisture resistant barrier we spoke about earlier.

Treating new sheds

When buying a new shed from a reputable local garden buildings manufacturer, there is a high chance it will come pressure treated such as ours.

Although is is pressure treated to prevent rot, it is not waterproofed until a high quality oil based preservative has been applied. 

It is vital that two coats of oil based wood preservative is applied as quickly as possible following the installation of your new shed. A top up coat must be applied annually or when water starts to soak in to the timber again rather than beading off and running down the walls. 

We recommend Premier Q Oil Based Wood preservative with added wax protection due to its long lasting waterproofing properties. We keep many colours in stock. Click HERE to check out the range.

Full garden shed timber treatment guide
Article Name
Full garden shed timber treatment guide
In this guide we go over the best practices for treating your garden shed, summerhouse & garden furniture. We look at the different types of preservative on the market and drill down in to their benefits and pitfalls.
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Superior Sheds Swansea Ltd
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