I have some hot water pipes that I want to lag. I tried a bit of split
sided lagging and 15mm was too tight - it wouldn't close over the
pipe, while 22m was very loose. I haven't got a set of calipers on me,
but I suspect it may be 3/4" pipe. Nobody this side of the pond seems
to stock imperial sizes any more. Any suggestions?

Cheers,

Ben

Ben wrote:
I have some hot water pipes that I want to lag. I tried a bit of split
sided lagging and 15mm was too tight - it wouldn't close over the
pipe, while 22m was very loose. I haven't got a set of calipers on me,
but I suspect it may be 3/4" pipe. Nobody this side of the pond seems
to stock imperial sizes any more. Any suggestions?

Cheers,

Ben

just use the 22mm lagging and apply tape every 18 inches to keep it in place

On 15 Mar, 21:36, "Phil L" wrote:
Ben wrote:
I have some hot water pipes that I want to lag. I tried a bit of split
sided lagging and 15mm was too tight - it wouldn't close over the
pipe, while 22m was very loose. I haven't got a set of calipers on me,
but I suspect it may be 3/4" pipe. Nobody this side of the pond seems
to stock imperial sizes any more. Any suggestions?

Cheers,

Ben

just use the 22mm lagging and apply tape every 18 inches to keep it in place

I guess though that if the lagging is loose then looses will be
increased due to air movements within the insulation...

Ben wrote:
On 15 Mar, 21:36, "Phil L" wrote:
Ben wrote:
I have some hot water pipes that I want to lag. I tried a bit of
split sided lagging and 15mm was too tight - it wouldn't close over
the pipe, while 22m was very loose. I haven't got a set of calipers
on me, but I suspect it may be 3/4" pipe. Nobody this side of the
pond seems to stock imperial sizes any more. Any suggestions?

Cheers,

Ben

just use the 22mm lagging and apply tape every 18 inches to keep it
in place

I guess though that if the lagging is loose then looses will be
increased due to air movements within the insulation...

No, because the pipe will heat the little bit of air within the insulation
and that cannot escape, provided you tape each joint too.

On 15 Mar, 22:06, "Phil L" wrote:
Ben wrote:
On 15 Mar, 21:36, "Phil L" wrote:
Ben wrote:
I have some hot water pipes that I want to lag. I tried a bit of
split sided lagging and 15mm was too tight - it wouldn't close over
the pipe, while 22m was very loose. I haven't got a set of calipers
on me, but I suspect it may be 3/4" pipe. Nobody this side of the
pond seems to stock imperial sizes any more. Any suggestions?

Cheers,

Ben

just use the 22mm lagging and apply tape every 18 inches to keep it
in place

I guess though that if the lagging is loose then looses will be
increased due to air movements within the insulation...

No, because the pipe will heat the little bit of air within the insulation
and that cannot escape, provided you tape each joint too.

Ah yes - therein lies the problem. The pipes are very inaccessible, so
the only way to fit the lagging is to push it on from one end, which
leaves no way of sealing the split. I may use 15mm lagging which is
better than nothing, although it only covers about 75% of the
surface...


Ben

In an earlier contribution to this discussion,
Ben wrote:

I have some hot water pipes that I want to lag. I tried a bit of split
sided lagging and 15mm was too tight - it wouldn't close over the
pipe, while 22m was very loose. I haven't got a set of calipers on me,
but I suspect it may be 3/4" pipe. Nobody this side of the pond seems
to stock imperial sizes any more. Any suggestions?

Cheers,

Ben

I'm puzzled to know what type of pipe you've got! The old 1/2" copper pipe
was virtually the same size outside as currently used 15mm pipe. [Imperial
copper is sized by the nominal bore, and metric by the external diameter].
Likewise, 3/4" copper was virtually the same size as 22mm.

Even 1/2" (bore) iron pipe had an external diameter very similar to 22mm. So
I'm surprised that the lagging doesn't fit.

So what *have* you got - lead maybe?
--
Cheers,
Roger
______
Email address maintained for newsgroup use only, and not regularly
monitored.. Messages sent to it may not be read for several weeks.
PLEASE REPLY TO NEWSGROUP!

On Thu, 15 Mar 2007 15:11:18 -0700, Ben wrote:

On 15 Mar, 22:06, "Phil L" wrote:
Ben wrote:
On 15 Mar, 21:36, "Phil L" wrote:
Ben wrote:
I have some hot water pipes that I want to lag. I tried a bit of
split sided lagging and 15mm was too tight - it wouldn't close over
the pipe, while 22m was very loose. I haven't got a set of calipers
on me, but I suspect it may be 3/4" pipe. Nobody this side of the
pond seems to stock imperial sizes any more. Any suggestions?

Cheers,

Ben

just use the 22mm lagging and apply tape every 18 inches to keep it
in place

I guess though that if the lagging is loose then looses will be
increased due to air movements within the insulation...

No, because the pipe will heat the little bit of air within the
insulation and that cannot escape, provided you tape each joint too.

Ah yes - therein lies the problem. The pipes are very inaccessible, so the
only way to fit the lagging is to push it on from one end, which leaves no
way of sealing the split. I may use 15mm lagging which is better than
nothing, although it only covers about 75% of the surface...


Ben

===============================
Use a very sharp utility knife (plus straight edge if necessary) to cut a
thin slice off one edge of the slit / opening. Experiment with the cut to
find out the correct amount to remove to produce a snug fit. Tape as much
as you can reach at the suggested distances.

Cic.

--
================================
Testing UBUNTU Linux
Everything working so far
================================

"Ben" wrote in message
ups.com...
I have some hot water pipes that I want to lag. I tried a bit of
split
sided lagging and 15mm was too tight - it wouldn't close over the
pipe, while 22m was very loose. I haven't got a set of calipers on
me,
but I suspect it may be 3/4" pipe. Nobody this side of the pond
seems
to stock imperial sizes any more. Any suggestions?

Cheers,

Ben


3/4" pipe is still in use in the air conditioning HVAC arena - you may
get some there, but in practical terms 22mm and the odd tywrap to hold
it in place is probably a better real world solution.

AWEM

On 15 Mar, 22:11, "Roger Mills" wrote:
In an earlier contribution to this discussion,

Ben wrote:
I have some hot water pipes that I want to lag. I tried a bit of split
sided lagging and 15mm was too tight - it wouldn't close over the
pipe, while 22m was very loose. I haven't got a set of calipers on me,
but I suspect it may be 3/4" pipe. Nobody this side of the pond seems
to stock imperial sizes any more. Any suggestions?

Cheers,

Ben

I'm puzzled to know what type of pipe you've got! The old 1/2" copper pipe
was virtually the same size outside as currently used 15mm pipe. [Imperial
copper is sized by the nominal bore, and metric by the external diameter].
Likewise, 3/4" copper was virtually the same size as 22mm.

Even 1/2" (bore) iron pipe had an external diameter very similar to 22mm. So
I'm surprised that the lagging doesn't fit.

So what *have* you got - lead maybe?
--
Cheers,
Roger
______
Email address maintained for newsgroup use only, and not regularly
monitored.. Messages sent to it may not be read for several weeks.
PLEASE REPLY TO NEWSGROUP!

Certainly not lead. Some are 22m, because that fits perfectly. Th rest
are smaler, and the 22mmlagging is very loose, but the 15mm
aggingis too small. I'll check the rest and let you know...

Cheers,

Ben

On 15 Mar, 22:11, "Roger Mills" wrote:
In an earlier contribution to this discussion,

Ben wrote:
I have some hot water pipes that I want to lag. I tried a bit of split
sided lagging and 15mm was too tight - it wouldn't close over the
pipe, while 22m was very loose. I haven't got a set of calipers on me,
but I suspect it may be 3/4" pipe. Nobody this side of the pond seems
to stock imperial sizes any more. Any suggestions?

Cheers,

Ben

I'm puzzled to know what type of pipe you've got! The old 1/2" copper pipe
was virtually the same size outside as currently used 15mm pipe. [Imperial
copper is sized by the nominal bore, and metric by the external diameter].
Likewise, 3/4" copper was virtually the same size as 22mm.

Even 1/2" (bore) iron pipe had an external diameter very similar to 22mm. So
I'm surprised that the lagging doesn't fit.

So what *have* you got - lead maybe?
--
Cheers,
Roger
______
Email address maintained for newsgroup use only, and not regularly
monitored.. Messages sent to it may not be read for several weeks.
PLEASE REPLY TO NEWSGROUP!

Ok - that's odd. It seems that as I had initially thought my pipes
were 22mm and 28mm. However, he 28mm lagging is loose on the 22mm
pipes, and the 22mm lagging is loose on the 22mm pipes. But the 22mm
fits the 28 perfectly :-)

Oh well....

Ben wrote:

Ok - that's odd. It seems that as I had initially thought my pipes
were 22mm and 28mm. However, he 28mm lagging is loose on the 22mm
pipes, and the 22mm lagging is loose on the 22mm pipes. But the 22mm
fits the 28 perfectly :-)

Oh well....

Have you been sniffing stuff you shouldn't have?


--
Dave
The Medway Handyman
www.medwayhandyman.co.uk
01634 717930
07850 597257

On 15 Mar 2007 15:44:49 -0700, "Ben"
mused:


Ok - that's odd. It seems that as I had initially thought my pipes
were 22mm and 28mm. However, he 28mm lagging is loose on the 22mm
pipes, and the 22mm lagging is loose on the 22mm pipes. But the 22mm
fits the 28 perfectly :-)

You haven't been buying the cheap crap from some DIY hovel have you?
I've found some of these to be very 'random'.
--
Regards,
Stuart.

On Thu, 15 Mar 2007 21:36:41 GMT, "Phil L"
wrote:

|!Ben wrote:
|! I have some hot water pipes that I want to lag. I tried a bit of split
|! sided lagging and 15mm was too tight - it wouldn't close over the
|! pipe, while 22m was very loose. I haven't got a set of calipers on me,
|! but I suspect it may be 3/4" pipe. Nobody this side of the pond seems
|! to stock imperial sizes any more. Any suggestions?
|!
|! Cheers,
|!
|! Ben
|!
|!just use the 22mm lagging and apply tape every 18 inches to keep it in place.

Cable ties do the same job and last longer.

--
Dave Fawthrop sf hyphenologist.co.uk 165 *Free* SF ebooks.
165 Sci Fi books on CDROM, from Project Gutenberg
http://www.gutenberg.org/wiki/Main_Page Completely Free to any
address in the UK. Contact me on the *above* email address.

Dave Fawthrop wrote:
On Thu, 15 Mar 2007 21:36:41 GMT, "Phil L"
wrote:

!Ben wrote:
! I have some hot water pipes that I want to lag. I tried a bit of
split ! sided lagging and 15mm was too tight - it wouldn't close
over the ! pipe, while 22m was very loose. I haven't got a set of
calipers on me, ! but I suspect it may be 3/4" pipe. Nobody this
side of the pond seems ! to stock imperial sizes any more. Any
suggestions? !
! Cheers,
!
! Ben
!
!just use the 22mm lagging and apply tape every 18 inches to keep it
in place.

Cable ties do the same job and last longer.

They do, but the thinner ones can cut into the lagging if tightened up too
much

Ben wrote
On 15 Mar, 22:11, "Roger Mills" wrote:
In an earlier contribution to this discussion,

Ben wrote:
I have some hot water pipes that I want to lag. I tried a bit of split
sided lagging and 15mm was too tight - it wouldn't close over the
pipe, while 22m was very loose. I haven't got a set of calipers on me,
but I suspect it may be 3/4" pipe. Nobody this side of the pond seems
to stock imperial sizes any more. Any suggestions?

(snip)

Ok - that's odd. It seems that as I had initially thought my pipes
were 22mm and 28mm. However, he 28mm lagging is loose on the 22mm
pipes, and the 22mm lagging is loose on the 22mm pipes. But the 22mm
fits the 28 perfectly :-)

I had something similar with tap washers not so long ago and came to the
same conclusion - ie : Sod it.
--
Roger Hunt