Usually, slipperiness is caused by algae or dirt on top of the deck or terrace. A full cleaning treatment should restore the natural grip of the wood or stone. If slipperiness is a persistent problem, consider installing grip mats in high traffic areas of the deck.
Selkirk
Selkirk is a town as well as historic royal burgh in the Scottish Borders Council district of southeastern Scotland. It pushes the Ettrick Water, a tributary of the River Tweed. The people of the community are called Souters, which suggests cobblers (shoe makers and also healers). At the time of the 2011 census, Selkirk's population was 5,784. Selkirk was previously the county town of Selkirkshire. Selkirk is just one of the oldest Royal Burghs in Scotland and is the site of the earliest settlements in what is now the Scottish Borders. The community's name implies "church by the hall" from the Old English sele ("hall" or "estate") and also cirice ("church").