Guests - If You want access to member only forums on HSO. You will gain access only when you sign-in or Sign-Up on HotSpotOutdoors.

It's easy - LOOK UPPER right menu.

Sign in to follow this  
Followers 0
BottomPounder

Insulating attic?

6 posts in this topic

I live in a story and 1/2 built in 1964 and was wondering about insulation in the attic. We have a problem with keeping it cool on the second floor in the summer. It has bat insulation in the 2by6's and was wondering if it would be better to put more bat insulation in or blown insulation. Thank in advance to all that replie.

Share this post


Link to post
Share on other sites

When you say story and 1/2 in that year I picture a knee wall rafters and then collar ties forming a flat ceiling. You can add insulation to the horizontal ceiling, knee wall, and outer wall.

You really can't add insulation to the rafters. What little air space that is there now is for ventilation. Which brings up, are your soffits vented. Your right around the time when no homes with that type construction were vented. Your rafters and or roof deck may not have held up because of that. Sagging roof and rotted roof deck would be worst case. Some homes have been around for a lot longer then yours and haven't suffered from not being vented. Adding a roof vent and venting the soffits would be recommended but in some cases I think it could create a problem where there wasn't.

If you want to add insulation to the rafters best thing would be to remove the sheetrock, fir out the rafters and add pink foam, a vapor barrier and re-rock it.

Share this post


Link to post
Share on other sites

It is not a good idea to double up bat insulation because you are making a double vapor barrier. That sometimes makes a problome with mositure building up.

Share this post


Link to post
Share on other sites

Not all batt insulation has kraft facing.

Friction fit, has no facing at all and is the recommended insulation for a retrofit.

ST brings up some good points about available space and ventilation, things that only you can answer.

Its very common to add more insulation to an attic, and the easiest is to blow in on top of the existing batts.

Keep your ventilation channels open.

Share this post


Link to post
Share on other sites

You may be better off spending time looking at adjusting the air flow in the duct work so that more occurs in the upstairs. There may be baffles in the basement that you can adjust to limit in one area and open up in another. If you get it figured out you should label each so you know where to move it to for summer or winter.

A cheap solution may also be a ceiling fan.

Share this post


Link to post
Share on other sites

me and my uncles have been working on remodling my aunts 1940's or earlier house

we had space to put in 2 air returns to the second floor.

that solved her problem of keeping the up stairs cool in the summer.

also the extirior walls and rim joist were spray foamed. like fish house spray foam. that cut her heating bill in half last winter. only time will tell what it will do in the summer.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0



  • Posts

    • Watch your City Ordinances.  Some city's require a back-flow preventor, and it can be VERY expensive. I have both the battery backup, and the water driven sump pumps in my pit--all at different elevations, and feel very confident. When the water comes up, and the power goes out, the battery backup starts working.  After that the water driven sump pump will kick in.  The water driven pump will keep pumping until the power is restored and the main pump returns everything to normal. There is always water pressure in a power outage (from the tower).  Cities keep the tower full for fire protection
    • So proud of my 93 year old dad.  It's getting tougher and tougher just getting him out there, but he still knows what to do once there.    
    • I still gotta tag Moose! I'm going for a Tom only!!   (Personal thing) is ,,, I want to do it with my bow
    • Shaggy parasols are coming up in the shade garden again. Yum.  
    • VTX129 has a great point on nothing smaller than 9". I have a HB 998Ci HD unit. The bottom features that I can pick up are incredible- however I sometimes have a problem picking fish up on it. I have tried to keep my SI width narrower to help ID fish. Overall fantastic tool. The hard to soft transitions are easy to see as are rocks and so forth. On the HB units the larger screened ones come with the High Def transducer.  The smaller units come with a compact transducer. You can find some great prices on models that are being phased out - but they also will quit repairing those units sooner as well. Trade off's. Check out Universal Mania and some others online for pricing. Bass Boat central has a lot of info under Humminbird and Lawrance topics.   Good luck   Steve
    • CM I agree...and Chicago seems to find those diamonds in the rough...not sure how their AHL team is or if they have more of these "sleepers" coming up from somewhere but I bet they are right back in the finals within a 2-3 years with or without Q.   Another article that came in last night on Fletch/Wild http://nhl.nbcsports.com/2017/04/25/wild-exit-early-fletcher-stays-positive-a-familiar-refrain-in-minnesota/  You might have to Cut/Paste
    • Same have to give them a try once they come out.
    • Can't wait to test that Sprinker. 
    • lots coming thru for a couple days now.  had fun whistling with a couple yesturday. 
    • I wasn't able to catch it live and when I tried finding it after the fact it wouldn't play on my laptop for some reason. I do admire Bowman for being visibly ticked about their early exit, but I think that may get pushed a little too far. You tick off Q and he might just walk out the door. Bowman just fired one of his buddies and Q isn't too happy about it. We will see how that plays out. I think the Hawks are in a tougher position cap-wise than the Wild and have been for a few years. The difference is they had been getting no-name guys to emerge and contribute. They could be on a very slippery slope in Chi-town. We will see how that plays out.
  • Our Sponsors