Lagging of pipes on the first floor yes/no

[scoobydo123]

Hi, just installing all pipework for a new boiler install in a house I am doing up. I plan to lag the pipes on the gnd floor that are run under the suspended floor. Should I also be lagging the first floor pipework?

PS pipework is plastic push fit 28mm

Tks

 

[greemyamochop]

Not normally as its not subject to freezing like the ones in the ground floor, dont think youll find many installers that do

Most working practices state you should lag in all unheated areas though

 

[digdilem]

As greemyamochop says, all unheated areas. The underfloor above a heated room can be considered heated. Even if it's insulated to stop sound travel, there's no chance of the cold getting into the house to the extent of freezing those pipes, UNLESS it's already frozen the radiators etc.

If the pipes are in eaves, loft or similar, then certainly - but generally you'd assess each area individually and insulate accordingly.

I have heard tell of folks putting rockwool around plastic pipes to prevent rodent damage, but I think that was just one daft old chap with Certain Ideas.

 

[scoobydo123]

Cheers guys will just do under the gnd floor then.

 

[simond]

Insulating pipes in floor voids is in the building regs but in reality the extra clearances required if you are using copper and notching joists make this highly undesirable.

 

[ianniann]

Agreed. Buildings regs say do it (how and cold pipes!), but I've never seen it. How long has it been like that in the regs?