Porn for the over-40s? I'm not quite that old yet but I have to admit to occasionally going "Phwooar" at some of the pictures.
Tongue In Groove.
Don't be knocking a well made shed!
Ship lap...mmmm.
I was just imagining Mark panicking there. "Oh no, what's that idiot linked to THIS time!" 
Some of those do appear to be quite nice? Ish? In a way...? 