Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 09-03-2009, 04:02 PM   #1
Member
 
Join Date: Mar 2009
Location: New England
Posts: 47
Share |
Default

Steam Pipe insulation. Any gain for insulating return pipes?


Hello,
The previous owners somwhere down the line removed all of the asbestos insulation. Which is nice, but now I need to get these pipes insulated before winter.

Is there a need or benefit to insulate the return lines? aside from the fact I always hit my head on them when walking around the basement! It will cost about 60-80 to insulate them.

I purchased the 3ft sections of Fiberglass foil/paper backed sleeves from Lowes. This should be good stuff right?

As for the elbows and joints I got the foil backed roll of 1"x3" insulation I plan to wrap the elbows and joints then cover in Aluminized Duct tape.

Any recommendations for when i do this?

How about them return lines?

thanks guys,
-j

slowjo is offline   Reply With Quote
Old 09-03-2009, 06:34 PM   #2
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 8,898
Default

Steam Pipe insulation. Any gain for insulating return pipes?


Not many replies so here's my concerns:

1) You don't want to hurt your head/get brain damage. LOL

2) You don't want to get the return condensate too cold if it goes thru an unheated space etc. In "theory" that could be hard on the boiler if it gets colder than designed condensate back to it.

Your choice of insulation is fine.


Last edited by yuri; 09-03-2009 at 06:37 PM.
yuri is offline   Reply With Quote
Old 09-04-2009, 07:34 AM   #3
Member
 
biggles's Avatar
 
Join Date: Jan 2008
Location: Long Island
Posts: 3,600
Default

Steam Pipe insulation. Any gain for insulating return pipes?


my 3 cents..... might leave the one you bang your head on raw because the ones you insulate will be better for the returnng condensate to keep its temperature,but that re-insulating loss might be heating the basement....was the basement supper hot with all those uninsulated returns last winter.if you couldn't breath down there..then cover them all .suggestion do all the elbows first then the runs into them.
biggles is offline   Reply With Quote
Old 09-04-2009, 08:56 AM   #4
Learning by Doing
 
Leah Frances's Avatar
 
Join Date: Jan 2008
Location: Easton, Maryland
Posts: 3,156
Blog Entries: 7
Default

Steam Pipe insulation. Any gain for insulating return pipes?


Take that junk back to Lowes and spend some money on some solid fiberglass insulation made especially for insulating these sorts of pipes. You buy it based on the diameter of the pipe, so you will have to map your system out. The stuff I got has a white exterior and looks very nice and clean.

I spent a good chunk of change in 2007 to do the pipes in my basement - by my math I will recoup my investment within 5 years. The first year saved me around 20% on my oil bill!!!!

Go to http://www.heatinghelp.com/ and read up on what insulation to use and how to put it up.

yes, my basement is not as hot as it was, but I don't live down there. Good luck. I was stunned by the cost of this project, pleased with it's ease, and AMAZED by the results.
__________________
If I could only remember to THINK about what I was doing before I did it.
Leah Frances is offline   Reply With Quote
Old 09-04-2009, 12:21 PM   #5
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 24,381
Default

Steam Pipe insulation. Any gain for insulating return pipes?


Insulate them.

Your heating bill and boiler will thank you.
beenthere is online now   Reply With Quote
Old 09-04-2009, 02:33 PM   #6
Member
 
Join Date: Mar 2009
Location: New England
Posts: 47
Default

Steam Pipe insulation. Any gain for insulating return pipes?


Quote:
Originally Posted by Leah Frances View Post
Take that junk back to Lowes and spend some money on some solid fiberglass insulation made especially for insulating these sorts of pipes. You buy it based on the diameter of the pipe, so you will have to map your system out. The stuff I got has a white exterior and looks very nice and clean.
The stuff I bought was fiberglass pipe insulation. 1/2 thick and backed in foil. its fairly rigid comes in 3 foot sections that you slide over the pipe and then it seals together. I've put it on 50% of the feed pipes already.

Had to map it all out and buy on the lengths.

How thick was the stuff you got?

Quote:
Go to http://www.heatinghelp.com/ and read up on what insulation to use and how to put it up.
Couldn't find much except for a recommendation of the stuff I bought and one person said to get 1" not 1/2 inch thick.


Quote:
I was stunned by the cost of this project, pleased with it's ease, and AMAZED by the results.
Calculated costs are abot $350 with the stuff I got.
slowjo is offline   Reply With Quote
Old 09-04-2009, 02:44 PM   #7
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 24,381
Default

Steam Pipe insulation. Any gain for insulating return pipes?


Should be 1" thick. But 1/2" is better then nothing.
beenthere is online now   Reply With Quote
Old 09-04-2009, 07:35 PM   #8
Learning by Doing
 
Leah Frances's Avatar
 
Join Date: Jan 2008
Location: Easton, Maryland
Posts: 3,156
Blog Entries: 7
Default

Steam Pipe insulation. Any gain for insulating return pipes?


I bought 2 inch thick rigid fiberglass from a company that only does pipe insulation. From their website http://expressinsulation.com/index.html:

Knauf 1000 Pipe Insulation is a molded, heavy-density, one-piece insulation made from inorganic glass fibers bonded with a thermo-setting resin. It is produced in 3' lengths with or without a factory-applied jacket. The jacket is a white kraft paper bonded to aluminum foil, and it is reinforced with a fiberglass scrim. The longitudinal lap of the jacket is available with or without a self-sealing adhesive, and a butt-strip is furnished for each section.

I had a LOT of pipe feet to cover - I can't find the bill, but I think I spent $800+.
__________________
If I could only remember to THINK about what I was doing before I did it.
Leah Frances is offline   Reply With Quote
Old 09-04-2009, 07:59 PM   #9
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 8,898
Default

Steam Pipe insulation. Any gain for insulating return pipes?


His 1/2" insulation will help keep the condensate warmer/boiler happier and may be a good compromise. The radiated heat thru it may be just enough to keep the surrounding area warm but not excessive loss/waste of energy. Only time will tell.
yuri is offline   Reply With Quote
Old 09-07-2009, 01:27 PM   #10
Member
 
Join Date: Mar 2009
Location: New England
Posts: 47
Default

Steam Pipe insulation. Any gain for insulating return pipes?


Thanks guys. We will see how the 1/2 insulation performs i guess. I didnt know they made it thicker. Its pretty hard to find on the internet.
slowjo is offline   Reply With Quote
Old 09-07-2009, 06:40 PM   #11
Member
 
Join Date: Mar 2009
Location: New England
Posts: 47
Default

Steam Pipe insulation. Any gain for insulating return pipes?


Im trying to find the right size elbows for the steam pipes Does anyone know how these sizes corolate to real world sizes?

It says #2 PVC 90deg Fitting cover what does that mean in real sizes?

http://expressinsulation.com/pvc_90s.html

-josh
slowjo is offline   Reply With Quote
Old 09-07-2009, 08:27 PM   #12
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 24,381
Default

Steam Pipe insulation. Any gain for insulating return pipes?


Won't be quiet the right size.
I get my insulation from SPI, in my area.
You may find a simular supply house in yours.
beenthere is online now   Reply With Quote
Old 09-08-2009, 11:54 AM   #13
Learning by Doing
 
Leah Frances's Avatar
 
Join Date: Jan 2008
Location: Easton, Maryland
Posts: 3,156
Blog Entries: 7
Default

Steam Pipe insulation. Any gain for insulating return pipes?


Wikipedia has a page that shows pipe size conversions..
__________________
If I could only remember to THINK about what I was doing before I did it.
Leah Frances is offline   Reply With Quote
Old 09-12-2009, 01:52 AM   #14
Member
 
Join Date: Mar 2009
Location: New England
Posts: 47
Default

Steam Pipe insulation. Any gain for insulating return pipes?


Quote:
Originally Posted by Leah Frances View Post
Wikipedia has a page that shows pipe size conversions..

Cant find anything comparing numbered pipe sizes to inches.

Any help?
slowjo is offline   Reply With Quote
Old 12-16-2009, 01:10 PM   #15
Newbie
 
Join Date: Dec 2009
Posts: 1
Default

Steam Pipe insulation. Any gain for insulating return pipes?


Slowjo, The pipe insulation is sold in inches (sized for iron pipe). If you have a copper pipe you need to convert the sizes. I found this chart to do so : http://expressinsulation.com/fibergl...ing_chart.html

The numbers you are looking at are for the pvc elbows and fittings. They are dependant on the pipe size and insulation thickness. You can find your correct size by looking at this chart: http://expressinsulation.com/pvc_sizing_chart.html

Hope that helps

FG2533 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pipe insulation: Foam, Rubber, Other? IckesTheSane Plumbing 36 10-29-2011 08:31 PM
Copper Pipe Problems jvc120er Plumbing 8 04-15-2008 01:07 PM
Steam Heat Pipe Size? helpless handyman HVAC 5 11-25-2007 08:10 PM
Using a pipe threading machine (with 2" pipes) amakarevic Plumbing 1 05-26-2007 01:23 PM
Leaky Steam Heat Pipe NJE HVAC 6 01-30-2007 08:26 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.