I have a New Yorker oil fired boiler with hot water baseboard, an expansion tank and domestic built in water heater... I have hot water but it is very weak. If I move the blend valve the volume of water increase but the temp gets cold Please shed some light

I'm in a debate of whether to insulate my boiler's pipes. I have a separate room dedicated to my boiler and water tank and I'm not sure if I should just leave it alone but that's where 95% of the supply and return pipings are and they radiate alota heat which is a waste. They’re not in the finished space of my basement except for the zoned pipes for that space. Couple of things you guyz might consider: 1) The water tank and the boiler are right next to each other, they are 2 separate independent systems. The boiler is a direct FHW system with 3 zones. 2) My boiler room is not insulated from the living area of the basement. 3) The zone pipes make some angles and turns but they end up going thru the ceiling in the boiler room perimeter. 4) There's no insulation on the ceiling of my boiler room. 5) the boiler itself is on a cement floor 6) There is a door to close off the boiler room from the living part of the basement. The door is the only way into the boiler room, no stairs nearby. 7) There are no windows in the boiler room. 8) Although I run the basement zone for 5 minutes every hour (to prevent freezing pipes) the basement stays relatively cold (58 F) and dry except for the boiler room which is warm (73-74 F). My questions are: 1) How much foam thickness do I need for properly insulating pipes? 2) What material is best for this type of insulation? 3) I have about 105 feet of pipe to cover that are part of other zones besides the basement’s. How much of a difference would it make in efficiency? suggestions are appreciated.