DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Insulation and Radiant Barriers > How to Vent and Insulate Enclosed Porch Converted to Entry Room

Thread Tools Search this Thread
Old 09-10-2012, 09:32 PM  
Junior Member
Join Date: Sep 2012
Posts: 2
Default How to Vent and Insulate Enclosed Porch Converted to Entry Room


I have an enclosed porch that was previously converted to a living space of the house with heat etc. In the winter it was very drafty so I ripped down the ceiling and walls so I can properly insulate them. I have attached pics of the opened ceiling.
I plan to insulate all the walls with closed cell spray foam to stop air infiltration into the room. I have been considering using baffles up the underside plywood and spraying foam (maybe open cell) on the around the baffles but have seen that some don't think this is a good idea. So now I am not sure what to do.

The soffits of the former porch/entry room are vented, but it doesn't have a ridge vent, side vents, or anywhere for the air coming in to excape.

My goal is to turn this room into a finished entry room.

I need help with two things:

1) What do I do to properly ventilate the roof? What is the best way to do this?

2) How should I insulate between the roof and drywall? There is several feet of space between most of the roof and where the drywall will go. The rafters are 24" apart.

Thanks for your advice in advance!

Click image for larger version

Name:	ForumRunner_20120910_232929.jpg
Views:	834
Size:	44.3 KB
ID:	4256   Click image for larger version

Name:	ForumRunner_20120910_233036.jpg
Views:	597
Size:	24.9 KB
ID:	4257   Click image for larger version

Name:	ForumRunner_20120910_233104.jpg
Views:	469
Size:	25.1 KB
ID:	4258   Click image for larger version

Name:	ForumRunner_20120910_233148.jpg
Views:	512
Size:	26.6 KB
ID:	4259  
Psubaron is offline  
Reply With Quote
Old 09-10-2012, 10:28 PM  
Contractor retired
nealtw's Avatar
Join Date: Nov 2010
Location: Upper Fraser Valley, British Columbia
Posts: 22,595
Liked 2732 Times on 2402 Posts
Likes Given: 4453


I would put a box vent on each side of the chimney. Air shuts over the outside walls, 24inch wide batts and vapour bearier. It is big enough you should have an attic access.
22"x 28". You could put a layer of batts across the rafters and then fit another layer between the rafters.

nealtw is offline  
Reply With Quote
Old 09-11-2012, 12:45 AM  
oldognewtrick's Avatar
Join Date: Jul 2009
Location: Nashville, TN
Posts: 10,465
Liked 1308 Times on 1045 Posts
Likes Given: 400


If you spray foam you will not ventilate. Using baffles will collapse them when the foam expands. They will spray the foam on the underside of the roof deck and you will not need or should insulate and further.
oldognewtrick is online now  
Reply With Quote
Old 09-11-2012, 08:38 PM  
Junior Member
Join Date: Sep 2012
Posts: 2

I was doing some research today and saw that radiant barriers installed onto the rafters significantly reduces the temperature in the attic space.

At this point I am considering installing a radiant barrier onto the rafters, rigid foam board over that onto the rafters and spray foaming the seams. *Then I will have to add a louver vent near the chimney so the hot air can rise and escape. Then i would install roxul wool batts in the 2 x 6 ceiling beams, add a vapor barrier and drywall. *I NEED SOME OPINIONS HERE FROM EXPERTS...thanks guys!
Psubaron is offline  
Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Similar Threads
Thread Thread Starter DIY Home Repair Forum Replies Last Post
vent heat from family room to second floor tinitus General Home Improvement Discussion 4 11-26-2010 08:48 PM
Insulate/Vent new attic home office calvinator Insulation and Radiant Barriers 2 02-21-2010 09:13 PM
OLD redwood siding..converted to flooring?? Tomas Flooring 1 06-23-2009 11:40 PM
Enclosed/Covered Porch Dilemma crapbathroom General Home Improvement Discussion 1 07-05-2008 08:44 AM
Need Help With Insulating Ceiling Of Enclosed Porch passmaster16 Flooring 12 05-18-2006 05:22 PM

Newest Threads