Noisy baseboards in radiant hot water system

Rich_28

I have a hot water radiant baseboard system in a 15-year-old home. Some of the radiators or feed pipes cause a staccato rattling as they heat and cool, presumably from expansion and contraction. How can this noise be isolated and corrected?

Brad White_9

Find where the rubbing is happening.

There are sleeves of delryn or nylon plastic that are made to slip over pipes where they pass through walls, floors or along cradles within fin-tube covers.

Quality baseboard has plastic guides that enable the radiation to move with less noise and so the fins do not catch against the cradles.

Ideally there should be at least an inch of airspace where pipes penetrate wood. This is to prevent the binding you are concerned with but also so the wood does not char over time. Even at 180 degrees the wood can turn to charcoal essentially over time. Not a good thing.