Construction Contractors Community

Contractor Florida · Joined: 17 Aug 2009 Posts: 86 Location: Florida

Trapped heat and moisture can raise energy costs, cause ice dams, and damage roof system components as well as structural and personal items located inside the attic where temperatures can easily reach 150° F (65° C). Condensation that forms inside attics can be caused by the use of washing machines, dish washers, bath tubs, showers, and tumble driers unless these items are properly ventilated through the roof. In some cases the condensation can be bad enough to be mistaken for a roof leak.

Here are some problems associated with an improperly ventilated attic space.
Sumps between rafters (deck deflection) can happen because after awhile (sometimes several years, sometimes only a couple years), a plywood roof deck can warp or deteriorate and become spongy and dangerous to walk on. This occurs because one side of plywood decking needs be able to "breathe" by being exposed to circulating air. The adhesives used in the plywood can deteriorate or Dry Rot can occur because of condensation.

Florida General Contractor

Baz · Joined: 18 Oct 2010 Posts: 1 Location: Sri Lanka

Roof ventilation is a vital part of a good roofing system. It performs some important functions such as, providing ventilation to your house’s attic enabling the heat to be reduced there. This makes sure that less energy is needed to cool the rest of your house, therefore helping to cut down extra electricity costs.

Having good roofing ventilation will make sure that your roof will last longer. Improper roofing ventilation can lead to a lot of problems.

dallas roofing

Darby · Joined: 03 Mar 2011 Posts: 5 Location: Indy

What is the best type of roof ventilation? I know there are dormers or slats at the end of my roof lines that let heat escape. But do the roof top vents and fans work better to get the heat out? I live in Cleveland, does Cleveland roofing need to be different from roofing in Florida or Nevada or other climates?

rxwy · Joined: 02 Jun 2011 Posts: 1 Location: Alberta,Canada

I guess the roofing system,foil tape for insulation of someone living in Alaska and from Arizona because of the temperature or weather issues. Correct me if i am wrong.