Given our climate in Ireland, decking requires regular maintenance. We get a lot of queries at Pat McDonnell Paints this time of year about how to breathe new life into old decking. Once you have decided it is time to spruce up your deck, below are the steps that are involved.
Step 1: Preparation
For every paint job you need the surface as clean as possible. Clean down the entire area with a decking brush and multi-purpose solution like Farbex Exterior Fungicidal Wash to remove any mould, moss, and algae making sure to scrub between the boards – leave for 15 minutes and hose it off.
Avoid bleach cleaner as this can shade the wood to a white which could cause further damage. Leave the decking to dry for at least two days. Tomorrow it might look dry but there will still be moisture in the deck, and if you seal that moisture in it will come out somewhere. Trapped moisture can make the deck look like it is cracking and splitting.
If required, sand off any loose or flaking areas and run a cloth soaked in white spirits to remove any sanding dust.
Step 2: Choose the correct product
Typically, your decking will have been coated with decking oil, decking stain, or a solid decking colour. To re-coat with a similar type of product is the most straightforward, but remember while you can go darker with a stain or oil it is very difficult to go lighter, so I always advise to test first.
Sikkens HLS is my go-to product in a stain or a solid colour; another alternative is Textrol Oil.
Tip: Check the weather forecast before you start, you will need a few of days of dry weather to complete your project, but it is best to avoid very hot weather as this can result in the product drying too quickly and not fully absorbing into the wood.
Step 3: Now it is time to paint/stain/oil your decking
Use a 4in paint brush to apply your chosen product, a 4in classic from Harper & Green would suit, or you could use a 4in masonry brush if you had it to hand. While you can use a roller it can sometimes result in an uneven finish.
Tip: Start at the furthest end of the deck and go in an S shape, painting one or two boards at a time for an even finish.
We recommend you give it two coats in April. After your final coat, if the gods allow it, leave at least 24 hours of good weather before you use it. At the end of September, give your decking a third coat to protect it from the winter.
You can find more tips and how-to-guides on our site www.mcdonnellpaints.ie
