28-04-2022, 10:20 AM
I have seen large Oak house timbers over a foot square reduced to dust and the next jointed section un affected. The little blighters seem quite fussy. As said before some plywood can have only odd plys attacked. Treatment of new timber is only as good as the method used. I had a 6" Tanallised gatepost put in 15 years ago the whole 2 foot below the ground rotted. Outside our gate there's a telegraph pole which when tested recently it was found to be perfectly sound. It was put in in1947 so the same age as me. It had been treated by laying a long time in a vat of Creosote. Not allowed now. Penetration is the key as its the grubs tunneling inside that do the damage. Painting the surface with chemicals only penetrates a little way Soaking or injection is better. Ideally soaking under a vacuum but not practical at home.