I have bought odd bits of architrave and skirting board in the past that have had knots in them. I've primed and painted them and they haven't caused any problems... yet.
I've never used knotting solution; should I have done?
I've tried to google to find out more about it but I am getting conflicting advice: some web sites say treat all knots regardless but others say only treat weeping knots. Is that why I've been fine, because mine weren't weeping?
Another site says that they can take years to weep and they might look fine now but play-up later. Is this true?
What about black knots? I was taught to avoid wood with them in. I presume that knotting solution won't save them?
Do I have to use a special primer on top of knotting solution? One web site said you must always use an oil based primer on wood, yet so many primers are water based. All multi surface primers seem to be water based and crown wood primer is too, though dulux is not.
Does the base of the primer make a difference?
Are all knotting solutions equal or are some better than others?