Insulating electfical sockets

Notch000

Hi we recently did drylining to our internal external walls and now I want to look at additional air tightness. How can I insulate the sockets ? The house was fully rewired and the original walls under the insulated boards were chased. I don't thing they were sealed in any way. I can feel a draft in a couple of them on the external walls up into the loft space. the center of the loft was converted into rooms.

how do you go about it ? i understand you cannot go near inside the junction boxes but can I spray insulating foam (fire rated) up behind the socket boxes and seal any external bits like the chase cavity

hollywood rose

Hi,

Just to let you know there is no such thing as fire rated expanding foam, even though it says fire rated on the can, read the declaration of performance, it may give 60minutes fire rating in a 10mm linear gap in a 215mm solid masonry wall. I have never see any foams with a fire test report for use next to electrical equipment or in stud walls.

Be careful insulating around electrical cables, those carrying high amperage loads can get hot and should not be buried in insulation

regards,

SloppySkidMark

https://www.meteorelectrical.com/switches-and-sockets/wiring-accessories-1/fire-putty-2g-internal.html?IE&gclid=CjwKCAiA6Y2QBhAtEiwAGHybPbM5GhlOk_5nkolGDjABr-Mrv-Xb2-Pd88bGg0DRgiUmRUs9OvLU5xoCSBoQAvD_BwE

I've seen this stuff for sale but never used it myself.

10-10-20

https://www.boards.ie/discussion/comment/118604859#Comment_118604859

Isn't there an allowance for short cable runs which pass through insulation? Is that depth of coverage contained within the electrical spec? I'd imagine that it's ~200mm or so to allow for feeds into stud partitions, etc.

hollywood rose

I will have to take you at your word regarding the short runs. I'm not sure.

but to the other point, i think people should be aware that the fire performance of expanding foams can be difficult to access from looking at the can. The manufactures declaration of performance should always be checked.

10-10-20

https://www.boards.ie/discussion/comment/118605107#Comment_118605107

Good call. It's the most prominent feature of this can for example:

https://www.screwfix.ie/p/no-nonsense-fire-rated-expanding-foam-gun-grade-750ml/90589?tc=CI6&gclid=CjwKCAiA6Y2QBhAtEiwAGHybPaIYq0AMI1Lil0UVRvrSEjlWso0-PwHrWCpBKRMTjEzjZPx6QpnPjxoCYlcQAvD_BwE&gclsrc=aw.ds

Deregos.

Not sure if it's possible in your situation but I had a similar draught through the sockets problem and was able to locate them in the loft space then sealed in and around the electrical conduit using expanding foam.

https://www.boards.ie/discussion/2058231941/insulating-electfical-sockets

Notch000

https://www.boards.ie/discussion/comment/118608128#Comment_118608128

https://www.boards.ie/discussion/2058231941/insulating-electfical-sockets

No good idea, that is not possible now, I will have to address from the bottom up

dathi

https://ie.rs-online.com/web/p/sealants/0550230?cm_mmc=IE-PLA-DS3A-_-google-_-CSS_IE_EN_Adhesives_%26_Sealants_%26_Tapes_Whoop_HI-_-(IE:Whoop!)+Sealants-_-550230&matchtype=&pla-332848659541&gclid=Cj0KCQiA0p2QBhDvARIsAACSOOPGYIH__U8LlGMyJjHtAiWlMU9PCutwdj6Y0TK2C-WP1sp8TRlujl0aAv_OEALw_wcB&gclsrc=aw.ds