DIY Home Improvement, Remodeling & Repair Forum

DIY Home Improvement, Remodeling & Repair Forum (
-   Insulation and Radiant Barriers (
-   -   Why is my house so Hot!?! (

269afemur 05-13-2011 02:32 PM

Why is my house so Hot!?!
Hey guys, I am new here and this is my first post.

I was hoping someone here would be able to tell me why our house is so hot in the warmer months, not just in the summer. We have no shade trees, and most of the windows are on the North or South walls. We seem to get very little amount of breeze, maybe because we are in town and other houses are close by.

It is typically much warmer inside our house than it is outside. The other day it was 65 outside but the thermostat said 75, and that was with the windows open. Of course the furnace is turned down to 55, but somedays it feels like it is still running because it is so hot inside. Even the basement feels hot when it gets really warm outside. We do have one ceiling fan that does seem to help a little.

The house is about 900 square feet with no upper level, and was built probably in the forties or fifties. The overhangs are very small and there are no vents in them. There are three gable ends to the roof, and two have a vent in it. The vents are small, probably about 8x13 maybe. There are no roof vents. I am not sure how much insulation is in the attic. We do get some pretty big icicles in the winter.

I am wondering if the attic needs to be vented better, and possibly more insulation? I know that would help with utilitiy bills and the icicles, but would it help with the heat inside the house in the warmer weather too?
What about an attic fan, or some kind of radiant barrier?
Thanks for your help.

oldognewtrick 05-13-2011 03:32 PM

Welcome to House Repair Talk. Yes you need to install ventilation and probably insulation. Ventilation will work as intake at the lowest point on the roof and exhaust at the highest. Call a couple roofing contractors and get a professional opinion of what will be required to provide a proper ventilation system.

269afemur 05-13-2011 04:38 PM

Thanks for the reply.
Thats kind of what I was thinking. I am just wondering how to put vents in at the bottom of the roof when the soffit is so small. It's only about 5 to 6 inches. The weird angle and as close as it is to the house will make getting a saw or drill in there pretty challenging.
Thanks for the input. Getting some professional advice is also a good idea since their estimates will be free.

joecaption 05-14-2011 06:10 PM

Recommended Levels of Insulation : ENERGY STAR

There needs to be soffit and ridge vents. No good way to tell you what needs to be done without a picture of what you have now.
That whole area that you say is only about 5 or 6" could have been vented with vinyl soffit vents and coil stock on the fashias to hold it up.

nealtw 05-14-2011 09:00 PM

If you remove the gutter you can get to the 1x6 soffit and change that to perfferated soffit and replace the gutter, put roof vents on one side of the peak and close the gable vents.

joecaption 05-15-2011 03:30 AM

Not sure where nealtw is getting his info, but removing the gutters will do nothing, the gutters are mounted to the fashia not the soffit. The vents need to go in the soffit area.
Rooftop, Soffit, and Gable Vents
There's bunch of differant way to get venting into that area. If it's an old house with soild wood or plywood then using a self feeding auger bit that's 3 or 4" in diam. using a right angle 1/2 drill, you could just pop in some round vents in between each rafter bay. But you must make sure there's no insulation out over the soffit area in the attic that will block the flow of air.

nealtw 05-15-2011 08:57 AM

removing the gutter just gives you room to work without wrecking the gutter.

269afemur 05-15-2011 09:28 AM

Best type of ridge vent?
What would be the best type of vent to put in the top of the roof? Ridge vents or the old style vents that are about 12 by 12. I would think ridge vent, but we are on a bgudget, and the old kind would be cheaper, and maybe quicker.

Currently we have about 5 inches of blown in insulation in the attic. How much should there be? I was thinking of going with another 7-8 inches. Will the insulation help with the heat inside the house during the summer, or is that more what the vents will help with? Or maybe we need both to keep the house cooler in the warmer months.

I was just thinkning to help with the budget, to do the venting now, and wait until fall to add in the insulation.

nealtw 05-15-2011 12:24 PM

Cutting holes or removing soffit board will not help if every bay is full of blown in insulation unless you add airflow shoots and bats to hold back the blown in which would help with ice in the winter. For summer heat adding roof vents may help a little only if you move the gable vents to the lowest corners of the gables and create some crossflow.

269afemur 05-16-2011 10:08 AM

Gable Vent Fan?
I called a contractor today and he suggested a fan for one of the gable vents. He said these work well in situations where you have little venting in the attic, and will help to keep airflow moving and the attic much cooler.
Does anyone have an opinion on this type of fan? Would it be a good way to go, or would the money be better spent on putting in actual vents.

I should add that I am not even sure if I can put in soffit vents it's a very small over hang and it's all covered in aluminum coil so I can't see what I am going to be going through.

All times are GMT -6. The time now is 03:39 PM.