My house (1924 Craftsman) has three plumbing vents, all metal, and a PVC radon fan vent. As best I can tell, one of the plumbing vents (about 2.5-3" diameter) is the soil stack since it's right above all three bathrooms; the other two are about 1.5-2" diameter and about in the right place to be above my kitchen sink and dishwasher so I assume they are for them. My question is, should I be putting caps or screens on these? I am concerned partially about pests and clogs (I took a wasps nest out of one of them) and also for snow and ice building up in them in the winter here in Minnesota. If I should be capping or screening them what recommendations do you have?
Thanks
Thanks