Home Heat Loss
How to Keep Your Home Warm This Winter
Air Pockets Reduce Heating Bills
I have a question about heat loss. How much heat is lost if a roof is exposed (re-shingling w/total removal of old shingles) and the roof has lats (boards that are laid length wise with gaps of about 1/2 - 1") instead of being fully covered with plywood? Are shingles used to retain heat or are they more for protection from the elements?
In a typical home whose roof is over an unheated attic space, the roof structure is not part of the insulation system. And you don't want it to be. In principle if not in practice, you want the temperature of the attic space to be the same as the temperature outside or lower... in harmony with nature if you will! That's why there are minimum ventilation requirements for attics to keep the outside air flowing through to equalize temperatures and allow moisture to escape to the outside.
A roof deck made of gapped horizontal boards as you describe would add somewhat to the ventilation of the attic and could lead to lower temperatures, since asphalt shingles do not provide a solid barrier against air infiltration. An even greater ventilation effect would occur with cedar, slate or tile roofing.
A plywood roof deck, on the other hand, seals somewhat tightly and therefore offers less ventilation regardless of the roofing material.
In either case, though, if there is a venting system in place, the difference might be inconsequential.
Have a small home repair question for THE NATURAL HANDYMAN? Just click here www.naturalhandyman.com/aitikia
For more home repair information, visit NH's growing list of original home repair articles and quality links www.naturalhandyman.com
If this information has been valuable to you, please consider making a small donation to support NH's free service to the home repair community! For more information, please visit our "Friends" page www.naturalhandyman.com/friends
The Natural Handyman Site Directory
- Home Repair Articles www.naturalhandyman.com/iip
- Home Repair Links Library www.naturalhandyman.com/linkslibrary
- NH's Bookshop www.naturalhandyman.com/bookshop
- Find a handyman at www.naturalhandyman.com/network
- Win unique home repair gifts and prizes at www.naturalhandyman.com/contest
Please read the important copyright and disclaimer information is located at www.naturalhandyman.com/copyright
Also in Home
- 5 ways your house can make you go broke
- 5 simple and affordable luxuries for your home
- 12 ways to lower heating bills
- 8 ways homebuyers annoy sellers
- Why pay extra toward mortgage principal?
- Avoid mortgage closing costs on a refinance?
- 6 ways to stock your "man cave" for under $500
- 6 home projects that don't pay for themselves
- Should I refinance my home equity line?