Adding Insulation To Existing Roof

The panel adds a remarkable amount of structure as well as insulation to the project.

Adding insulation to existing roof.

Portions of an existing building that are altered in the course of additions alterations renovations or repairs must be brought into conformance with the code with the following exceptions applicable to attic roof retrofit. Hack n stack sealed foam board between the rafters would be better since it s at least an air impermeable insulation but even that would require a vent gap below the roof deck to meet code and you d still be under r38 on that 2x6 rafters unless you. It creates a breeding ground for mold and mildew and ruins the air trapping pockets that block heat flow. Department of energy fibgerglass batts have an r value of 3 2 per inch while loose fill fiberglass.

We have done many roof retrofits with a structural insulated panel nail base panel. Water is insulation s enemy. Look for water stains on the roof sheathing or damp or moldy spots on attic joists and existing insulation as a clue to where leaks might be. Unless your home was specially constructed for energy efficiency you can probably reduce your energy bills by adding more insulation.

Home weatherize insulation adding insulation to an existing home. Hi i would like to add insulation on top of an existing flat roof without removing the existing roof cover. Box out light fixtures. Many older homes have less insulation than homes built today but even adding insulation to a newer home can pay for itself within a few.

The assembly shown here is an unvented roof assembly and must meet relevant code requirements. Of your email interested please feel free to contact us on facebook at cp millworks business page. It is an acceptable practice to install a new roof over an existing roof membrane system provided that the roof deck is. Multiply the number of inches of insulation by the r value per inch.

According to the u s. Batts between rafters in would require adding ventilation between the insulation roof deck. Or call at 316 995 1607. When a flat roof is retrofitted by adding rigid foam insulation above the existing roof sheathing the new air and water control layers must be carefully integrated with the existing roof structures.

We go right over the existing shingles.