Using Styrofoam For Flat Ceiling Roof Insulation

Some products have reinforced facing to make them sturdier.

Using styrofoam for flat ceiling roof insulation.

It provides r values that range from 3 6 to 4 2 per inch. This is an even more dense and more expensive foam board insulation. Cold roof systems are highly inadvisable as insulation from the inside will inevitably lead to the formation of condensation. The effective roof insulation layer may range in thickness from 3 to 12 cm as needed.

Insulating an attic usually means you have a lot of room for insulation and you will need high r value so that is why the cheaper options are more popular blown cellulose or blown fiberglass. Closed cell polyurethane spray foam will prove ideal for thermal insulation of a flat roof. Here we share the most common mistakes people make when installing flat roofing insulation. One common use of extruded polystyrene foam board is for foundation insulation panels.

This foam board insulation is available with straight or tongue and groove edges to help limit air movement. This is then covered with a further weatherproofing layer. As part of insulating your flat roof be sure to contain and seal all bypasses. A very energy efficient enclosure results.

To produce a hot roof rigid insulation is fitted outside above the weatherproofing. It provides about r 5 per inch. There are many different types and installation methods out there along with a lot misinformation about which products offer the greatest energy savings. Flat roof insulation installation the rigid foam board insulation we used was 2 thick and came in 4 x 8 sheets.

Image courtesy of d7 spray foam insulation houston tx. This is by far the most expensive option. That styrofoam insulation will work but it is not cheap per r value however it gives you a great r value per inch. Also called styrofoam insulation this is the least expensive material.

Once the roof demo was complete and the flat roof was cleared of any remaining debris some rotted 2x material around the perimeter of the roof was replaced. Cold roof a very bad idea. Roofing insulation is one of the most important and misunderstood building components. What insulation to use.

Spray foam using spray foam would be an excellent option. Blanket insulation or rigid styrofoam will be the least expensive but depending on the accessibility it may be difficult to. Looking upward through the open ceiling if the exterior wall and roof deck assemblies both contain spray foam then a continuous insulation and airtight layer is established from the base of the walls to the peak of the roof. This type of un vented roof has proven reliable when properly installed.

It is available in all different size configurations to accommodate lots of different applications. Such an insulating solution involves applying several layers of pur foam with each layer around 1 2 cm thick.