Using Styrofoam For Flate Ceiling Roof Insulation

Products with a higher r value have a higher cost but have an increased capacity to resist heat flow and therefore provide greater insulation.

Using styrofoam for flate ceiling roof insulation.

The quest for greater energy efficiency in buildings has led to increasing interest and need for insulation improvements in hvac equipment more airtight construction new materials and assemblies. There are lots of different ways to insulate this type of roof but one of the best methods calls for the installation of rigid foam insulation above the roof sheathing. Insulated roof assemblies can be vented or unvented. I used 20 bags which is the minimum purchase for.

Each type comes with unique advantages. It provides r values that range from 3 6 to 4 2 per inch. The styrofoam insulation that home depot carries is only rated for r 5 per inch. Align the front of the board with the face of the rafter or joist.

I am going to install pine barn board but curious if 2 rigid styrofoam sm i have surplus sheets leftover from another project installed and taped sealed flush or level between the roof truss will be adequate. Some so called experts online may recommend the following claiming to achieve a greater r value at a lower cost. It can also be installed in a log cabin. Foil insulation is a radiant barrier and it works by.

Roof insulation materials to avoid. I just insulated my attic this weekend with blown in cellulose insulation and achieved between r 30 to r 45 for about 0 42 sq. That means even a 2 thick piece will only give you r 10 for 0 96 sq. Styrofoam insulation is also used as floor insulation and roof insulation.

The roof is 2 4 vaulted ceiling with adequate ventilation throughout. Save money by installing fiberglass insulation and framing out roof slope using osb board substrate. Leave an air gap between the roof sheathing and the board. Reinforced concrete with a ballast layer of gravel or concrete slabs styrofoam brand roofmate insulation helps the roof membrane maintain a steady temperature minimizing the harmful effects of freeze thaw cycles weathering and physical damage during and after construction.

Senior engineer manager at icynene john broniek makes the case for the unvented attic assembly and why insulating the underside of the roof makes sense. Press the cut insulation board to fit between the rafters or joists. On roofs styrofoam can be cut and used to provide appropriate drainage. There are at least two good reasons why this approach makes more sense than installing the insulation under the roof sheathing.

After it is laid on ceiling material plywood or other materials can be placed over it. Foil insulation underlayment is recommended under a metal roof and in most cases the shiny side should be facing up but there s a catch.