Forma decking boards are the premium choice from Ecoscapeand#039;s decking catalogue. Forma decking boards are made from a wood plastic composite and feature a 1mm capping that is made entirely from HDPE, providing them with extremely high durability. Unlike traditional timber decking, these board will not warp, rot, stain or splinter and therefore require little to no maintenance. All products in our Forma decking range have a 25 year guarantee and each board is multi tonal, meaning that they feature a multiple similar colours running through them which provides them with a more authentic woodgrain appearance.The silver birch finish is the lightest we offer amongst our composite decking range, the colour of which is a blend of grey and traditional oak.