How To Insulate A Flat Roof In Florida

The correct method for a flat roof is under the current regulations to have a warm roof.

How to insulate a flat roof in florida.

Some types of flat roofing material like metal also require insulation to help deaden the sound. Insulation is placed in between the joists underneath the roof surface above. Water leaking into your home puts your home at risk for mold growth which then leads to misery and potential health problems. Moisture penetrating your building materials will eventually compromise the integrity of your home.

If insulation is installed below the flat roof deck this is called a cold roof. The type that is right for your flat roof insulation job depends upon the state of the roof expert opinion on the best type and your budget. To produce a hot roof rigid insulation is fitted outside above the weatherproofing. This is then covered with a further weatherproofing layer.

Then install r 30 fiberglass batts between the rafters. A note to consider before construction. Insulation material is placed on top of the roof rather than in between the ceiling and the decking. Cold roof systems are highly inadvisable as insulation from the inside will inevitably lead to the formation of condensation.

Many homeowners also prefer to use a type of insulation to help improve energy usage on the roof. Residential requirements for insulation are divided by the location in the home. Consider geography budget and use for the roof to determine the best option. On winter days heat flows from a warm inside to a cold outside.

Gable roofs hip roofs intersecting roofs butterfly roofs mansard. Framing this out and buying 30 r fiberglass insulation will cost you about 50 more than just buying 5 inches of polyiso equivalent of 30 r. In florida this often means heat is flowing from a warm outdoors to an air conditioned indoors. Spray foam insulation applied to your attic ceiling can reduce and prevent water damage caused by rain water.

Framed wall insulation must meet or exceed r 13. Generally a rigid insulation board should be used as part of the roofing construction and may be applied over or under the roofing deck. Insulation is rated in terms of its thermal resistance. Insulation can reduce the amount of heat that flows reducing cooling and heating costs.

For block walls interior insulation must meet or exceed r 7 8 and exterior insulation must be r 6. From there the flat roof system you choose will determine the materials you apply. It should be installed on tapered 2x furring strips in order to slope the surface of the roof to drains. Cold roof a very bad idea.

You would only do this however if replacing the roof covering on top and you have the height above the roof to do this. Ceiling insulation must be much higher at r 30 and a raised floor must be at least r 13.