Insulating Flat Roof In Florida

There are different insulation requirements and recommendations for different parts of your home.

Insulating flat roof in florida.

It is top quality and the most cost effective product for your flat roof. Most insulation you buy will have a sq ft number for easy reference. Insulation in your walls floors and ceilings helps to keep your home cool in the summer and warm in the winter. Can a flat roof be insulated from inside from the ceiling of the area below.

The space is located beneath the roof sheathing and above the ceiling of the living space. Let s say you measured your attic and you realize your attic has about 9 inches r 30 of insulation and your attic is about 40 sq feet you d need at least 3 inches of extra insulation that covers 40 sq ft to get an r value of r 38. Insulating a roof from inside is technically feasible. This system was often used in the past but is not recommended nowadays.

This is the most common way to insulate a flat roof. We recommend having at least 20 r value worth of material for optimal energy efficiency. But the story doesn t end there. Materials used to make insulation in these three types include mineral wool fiberglass cellulose fiber vermiculite styrofoam polystyrene and polyurethane.

Broward collier hendry lee miami dade monroe and palm beach and require a minimum r 30 attic insulation. Today we ll go over insulation for your attic and why it s essential to your florida home. When the insulation is installed properly there will be plenty of ventilation for a residential structure. Framed wall insulation must meet or exceed r 13.

It s what s called the cold roof principle. The main concern from florida building code is that any structures or vents that may reside on the flat roof must be properly fastened and sealed. All other florida counties are considered to be in climate zone 2 and require a minimum r 38. While expensive the best insulation is polyiso rigid foam.

In fact it may cause damage in the long term. You can expect to pay about 55 100 sq ft. Climate zone 1 consists of the following south florida counties. The material that works best depends largely upon preference in a given situation.

For block walls interior insulation must meet or exceed r 7 8 and exterior insulation must be r 6. Like other roofs insulating a flat one requires ample ventilation a vapor barrier and sealed bypasses. For the material that covers a flat roof wind resistance is less critical and the material tends to have negligible impact from salt spray.