instaleing a new cieling

onepercangel · 11-20-2008, 12:51 AM

we have 10ft ceiling in the kitchen and living room and we are lowering them too 8ft and we are just woundering if we have too in insulat the lowed ceiling when the excieing ceiling is fully insulaed already

TazinCR · 11-20-2008, 03:00 AM

With todays heating prices I would insulate all I can.

Marvin Gardens · 11-20-2008, 09:43 AM

The rule of thumb is if you want heat or cold to stay where it is then insulate.

**AtlanticWBConst.** · 11-20-2008, 11:09 AM

The key is going to be what your interpretation of "fully insulate" means.

Check to see what the requirements are for your region, then check what is in place.

If the ceiling areas are insulated to the requirements for your region, then adding additional insulation, is just going to be overkill, and a waste of time and money.

Maintenance 6 · 11-20-2008, 12:41 PM

Having two insulation systems interrupted by a large air void could be setting yourself up for moisture condensation issues. You would be creating an unvented plenum. If the air temperature in that space ever drops below dew point, get ready for a host of problems. You'd be better to lower the insulation system down to ceiling level and vent above it.

11-20-2008, 12:51 AM	#1
onepercangel Newbie Join Date: Nov 2008 Posts: 1	instaleing a new cieling we have 10ft ceiling in the kitchen and living room and we are lowering them too 8ft and we are just woundering if we have too in insulat the lowed ceiling when the excieing ceiling is fully insulaed already

11-20-2008, 03:00 AM	#2
TazinCR Whatamess Join Date: Jun 2008 Location: Costa Rica Posts: 423	instaleing a new cieling With todays heating prices I would insulate all I can. __________________ I may go home hungry, but not tired and hungry.

11-20-2008, 09:43 AM	#3
Marvin Gardens Member Join Date: Sep 2008 Location: Portland, OR Posts: 1,186	instaleing a new cieling The rule of thumb is if you want heat or cold to stay where it is then insulate. __________________ My idea of a perfect day: No where to go and all day to get there.

11-20-2008, 11:09 AM	#4
AtlanticWBConst. Lic. Builder/GC/Remodeler Join Date: May 2006 Location: New England Posts: 7,554	instaleing a new cieling The key is going to be what your interpretation of "fully insulate" means. Check to see what the requirements are for your region, then check what is in place. If the ceiling areas are insulated to the requirements for your region, then adding additional insulation, is just going to be overkill, and a waste of time and money. __________________ - Build Well -

11-20-2008, 12:41 PM	#5
Maintenance 6 gravity always wins Join Date: Feb 2008 Location: Central Pennsylvania Posts: 2,417	instaleing a new cieling Having two insulation systems interrupted by a large air void could be setting yourself up for moisture condensation issues. You would be creating an unvented plenum. If the air temperature in that space ever drops below dew point, get ready for a host of problems. You'd be better to lower the insulation system down to ceiling level and vent above it.

instaleing a new cieling