Someone once suggested I spray expanding foam up my neighbour's exhaust. Apparently if you extend the hose a bit the foam goes all the way to the valve gear. I don't whether this is just a theory or someone's tried it. I've used the foam in my kitchen and it dries to rock.
Someone once suggested I spray expanding foam up my neighbour's exhaust. Apparently if you extend the hose a bit the foam goes all the way to the valve gear. I don't whether this is just a theory or someone's tried it. I've used the foam in my kitchen and it dries to rock.