Tanalising On-site
Young Brothers Posts specialise in two main grades of tanalising for their timber: H3 and H5
H3 Specification
H3 specification is for timber that is exposed to the weather but not in contact with the ground. This includes non-structural timber, for example fascia boards or weatherboards.and timber protected from the weather but with a risk of water entrapment like decking, fencing and garden structures.
H5 Specification
H5 specification is for timber used in situations where there's a risk of severe decay such as on- or in-ground use or in severe or continuously wet conditions. House piles, fence posts and poles, retaining walls, crib walling and horticultural supports all need to be H5 rated.