BearsFan315
Well-known member
ok, so i am working on insulating my detached 1 car garage. it is 20 wide by 30 long. single garage door on front 20 end that is 8x7. man door on front left wall toward house. garage was originally a 20x20, then old owner added a 20x10 addition on the rear for a workshop, and a man door from front to rear. small 30" door. i recently removed the man door and widened the opening so i can transverse easily front to back, and move items around.
walls are insulated with r13 and drywalled in.
want to insulate the rafters, as i store stuff in the overhead and want to keep it open and easily accessed. brand new roof put on earlier this year, 50yr arch shingles and such. walls are ONLY 8' tall, roof peak is 15' tall from ground level. no lift, no plans for lift. new roof has a ridge vent, and NO soffits, more of a cape style garage, there is about an 1/2" gap around the top of plate between top plate and roof sheeting. rafters are 2x6 with approx 24" OC.
question is should i
1-install a vent channel, like this one ADO Products Durovent 22-in x 48-in from ridge to gap to allow air to flow freely up the deck to vent. then install some r15 or r19 faced fiberglass over the vent. then some strapping to secure the insulation and hold it in place, just in case. $300 insulation, $150 vent channels, $25 strapping, $50 tools & other
2-seal up ridge vent and gap, and install some r19 faced fiberglass in the cavities. then some strapping to secure the insulation and hold it in place, just in case. $500 insulation, $25 strapping, $50 tools & other
looking at either way it estimates about $500-600 in parts, with me doing the labor. would be using a pneumatic stapler to save me time and hassle.
had a local insulation come out and quote me what they want to do it and, they recommend sealing up the vents & gap, r19 unfaced fiberglass all over, strap in to be safe, Quoted $900 to do this, BUT i will have to clean ALL things out of the rafters, move thing on floor out of the way, possibly to driveway while they work. I plan to work around the stuff. would take a day to move it all out and back in. a lot of work !!
Also I plan on conditioning the space with a AC/ heat Pump.
walls are insulated with r13 and drywalled in.
want to insulate the rafters, as i store stuff in the overhead and want to keep it open and easily accessed. brand new roof put on earlier this year, 50yr arch shingles and such. walls are ONLY 8' tall, roof peak is 15' tall from ground level. no lift, no plans for lift. new roof has a ridge vent, and NO soffits, more of a cape style garage, there is about an 1/2" gap around the top of plate between top plate and roof sheeting. rafters are 2x6 with approx 24" OC.
question is should i
1-install a vent channel, like this one ADO Products Durovent 22-in x 48-in from ridge to gap to allow air to flow freely up the deck to vent. then install some r15 or r19 faced fiberglass over the vent. then some strapping to secure the insulation and hold it in place, just in case. $300 insulation, $150 vent channels, $25 strapping, $50 tools & other
2-seal up ridge vent and gap, and install some r19 faced fiberglass in the cavities. then some strapping to secure the insulation and hold it in place, just in case. $500 insulation, $25 strapping, $50 tools & other
looking at either way it estimates about $500-600 in parts, with me doing the labor. would be using a pneumatic stapler to save me time and hassle.
had a local insulation come out and quote me what they want to do it and, they recommend sealing up the vents & gap, r19 unfaced fiberglass all over, strap in to be safe, Quoted $900 to do this, BUT i will have to clean ALL things out of the rafters, move thing on floor out of the way, possibly to driveway while they work. I plan to work around the stuff. would take a day to move it all out and back in. a lot of work !!
Also I plan on conditioning the space with a AC/ heat Pump.
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