noisy radiators

[mrfun1981]

Help me please.

Iv been getting noisy radiators in my house since iv moved in. But my landlord keeps telling me that all i need to do is bleed the radiators. But i keep doing that, except 2 of them as it dosent matter how much i try & turn just cant bleed them.

They only seam noisy when the radiators have been turned up any higher than 5, if i have the radiators lower than 5 it dont always warm the rooms enough . The noise reminds me of heavy rain on the windows or something similar to oil spitting in a chip pan.

Has any one got any idea???'s of what the problem might be & what i can do to try & fix it myself

Many thanks

PS 1st posted this in a wrong section thats why iv posted it again sorry

 

[Bahco]

Sounds like expansion noises. Is any of your pipework touching floorboards etc.

Does it only happen when the rads get hot

 

[mrfun1981]

No, none of the pipes are touching floorboards & yes it dose only happen when the rads get hot.

Do u have any ideas how i can stop the noise's please?

 

[Bahco]

Do the rads have little plastic clips where they hang on the bracket

 

[BazThePipeman]

Could be air in the pipes. Try closing down the valves on all the rads except one and keeping the heating on. Begin bleeding the only operating rad to let out any air that may be trapped in the system. Keeping one rad on should force the water flow through just this one and maybe any air also.