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.
Halkirk
Halkirk is a village on the River Thurso in Caithness, in the Highland council area of Scotland. From Halkirk the B874 road runs towards Thurso in the north and towards Georgemas in the eastern. The town is within the parish of Halkirk, as well as is claimed by citizens to be Scotland's initial intended town.