Dave Maxwell
Well-known member
Is r19 good enough for walls on a pole building. It is 6 1/4 inch thick. Can't go thicker without compressing the material. Fiberglass rolls. Radiant heat also
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r19???
- Thread starter Dave Maxwell
- Start date
jwith68
Well-known member
I have R19 fiberglass in the walls of my garage/shop, and it has worked out well. I have fiberglass blown in over the metal ceiling at about R30, and it is not bad at all to heat/cool.
OP
Dave Maxwell
Well-known member
Thanks. Trying to spend all my money on insulation and save on heat bill
fiveohpatrol
Well-known member
I put 19 in my walls and 30 in the ceiling and am happy with the decision. It has stayed very comfortable in there over the last couple weeks with most days in the high 90s and a few over 100.
Gary S
Well-known member
R19 is rated for a 2x6 wall which is around 5.25" or so. Your walls are closer. Unless you can find something specially rated for 6.25" walls, R19 will do a better job than anything else. Forcing more insulation into a wall than what fits, just lowers your R value.
Even R19 is overkill for a wall. My garage has R13 walls, and without heat or cooling, it stays at +15 when the outside temp is -40 and at 85 when outside temp is at 105.
With a little bit of added heat or cooling, I can make it whatever temp I want summer or winter. Just keep the doors shut.
Even R19 is overkill for a wall. My garage has R13 walls, and without heat or cooling, it stays at +15 when the outside temp is -40 and at 85 when outside temp is at 105.
With a little bit of added heat or cooling, I can make it whatever temp I want summer or winter. Just keep the doors shut.
Kevin C
Well-known member
Forcing more insulation into a wall than what fits, just lowers your R value.
Overall R value of the fiberglass bat decreases, but the R value per inch increases. Compressing thicker fiberglass gets you a better R value for that cavity size.
OP
Dave Maxwell
Well-known member
Shooting for 19 in the walls and 30 for the ceiling with two inch foam board under and around sides. Two foot down from top of floor. Hopefully only having two windows and one overhead and one walk in heating will be easy and keeping summer temps down will be easy also. Do plan to run a dehumidifier and fans in summer Granted its one big room though.
Steevo
Well-known member
R19 craft-faced insulation can be used in a 2x6 wall cavity, but you can actually use R21 with plain fiberglass batt insulation, or higher with spray foam.
I don't know for sure what the winter lows are around "Kickapoo", but in my neck of the woods (Idaho Falls, ID), it can be in the single digits or even below zero for a number of days at a time, so I went with R21 batt insulation in walls and R60 (18") of blown-in in the ceiling.
The heater barely cycles a couple of times a day in winter.
I don't know for sure what the winter lows are around "Kickapoo", but in my neck of the woods (Idaho Falls, ID), it can be in the single digits or even below zero for a number of days at a time, so I went with R21 batt insulation in walls and R60 (18") of blown-in in the ceiling.
The heater barely cycles a couple of times a day in winter.
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tdkkart
Well-known member
I did the R19 fiberglass, and then at the last minute caught a sale on 3/4" pink foam board, which is an R4. Installed this over the fiberglass and then taped all the seams, makes for a really tight envelope.
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Dave Maxwell
Well-known member
Wondered about Puting so.e foam board against the outside first before the rolled. If I put 1/2 drywall oninside will ite fairly quiet. Have neighbors about 150 feet away. Want to work at night also
darkk
Well-known member
R19 is standard for 6" walls. R30 or R38 is standard for ceilings.
Shooting for 19 in the walls and 30 for the ceiling with two inch foam board under and around sides. Two foot down from top of floor. Hopefully only having two windows and one overhead and one walk in heating will be easy and keeping summer temps down will be easy also. Do plan to run a dehumidifier and fans in summer Granted its one big room though.
I think you have a good insulation plan Dave, I'd do something similar.
OP
Dave Maxwell
Well-known member
Definitely want to insulate the best I can.
jack stand
Well-known member
Pay close attention to air infiltration and air flow through you're wall cavity. FG insulation values drop like a rock with any air movement in the wall cavity.
OP
Dave Maxwell
Well-known member
Might put 1/2 inch foam board against the steel and fiberglass the drywall. Hopi g to keep sou.d down as well. Just read all the sound threads I could find. Planishing hammer and stuff I don't want heard by neighbors