Wooden Garden Furniture Pressure Treated Mould

Posted on Leave a comment

When you receive a new piece of wood garden furniture, a planter or bench for example, if it has been pressure treated or tanilised it is very common to see mould on arrival. Sometimes just a few white marks, sometimes a lot more and black mould spores can been seen which is not very attractive at all. The good news is, the pressure treatment is workinng!

The wood will sweet for a while and this can cause mould, especially if it has been wrapped for transit or in the dark for a while.

It is nothing at all to worry about and extremely common. Ideally just wash off with soap and water and leave outside to dry. The sun will dry it and stop it moulding, usually between 2 and 3 weeks of being outside. Each time the mould reappears in this time just wipe it down.

Have a look at the link below for further assistance:-

Combining traditional techniques with expert know-how and modern manufacturing methods, Woodshaw products are distinguishably high in quality.

All of our products are FSC® certified, responsibly and sustainably sourced. Our commitment to quality is matched by our commitment to provide the best experience for our customers. We’re proud of the market reputation we’ve inherited – providing comfortable, durable furniture at great value, all supported by an unparalleled
level of customer service.




There are two types of knots likely to occur in our products – live knots and dead knots. A live knot is usually light in colour and generally will never fall out or affect the product strength and durability. However, a dead knot, usually darker in colour, will in some cases fall out leaving a hole and occasionally sharp edges. This may have an effect on the strength of the product and so in this case we would ask that you take photographs and email them to us.


Timber is a natural material susceptible to
changes in the atmosphere such as fluctuating
temperatures and varying levels of humidity
which cause it to expand and contract. This
may lead to splits and cracks appearing in
the timber, or it may even warp. However, none of these occurrences should cause concern as they will not affect the strength or longevity of the product. If you’re concerned and you can easily fit a £2 coin into the split, please take photographs of the defect and email it to us. We will analyse and replace the part if necessary.


We take care in the production, packing and
storing of our products though occasionally
mold can grow on components usually where
there is limited airflow. However, mould growth
does not affect the strength and durability of
the product and only grows on the surface. It’s
not harmful and can easily be wiped off with a wet cloth, brush or be pressure washed. Once the product has been assembled and is out in the open air the mould will not return.


Resin pockets can be present in our timber products and as a result leakages can occur. However, this will not affect the strength and longevity of the product in any way. In the event of any leakages, we suggest cleaning the affected area with mild soapy water and if the resin has completely dried we would advise lightly sanding and re-coating the product with a suitable preservative.

We recommend using Ronseal Quick Drying Woodstain for a natural look or Ronseal Garden Paint to add colour to your garden. We advise you to let your Woodshaw product weather for 3 months before it will need treating. Top Tip: Sand the product lightly with a fine grade sandpaper then wipe down with white spirit.

Leave a Reply

Your email address will not be published. Required fields are marked *