So, there’s lots out there about pros and cons of SIPs but I’m conscious they’ve only really been around for about 60-70 years. (The biggest risk seems to be water ingress - but that would be the same for timber frame, right…?)
So, if well built and well maintained, how long will a SIPs house last? The only figure I’ve seen is 60 years. But that is conveniently around the same length of time as their existence!!
Any informed views out there? Many thanks.