Using Styrofoam For Flat Ceiling Roof Insulation

Cold roof systems are highly inadvisable as insulation from the inside will inevitably lead to the formation of condensation.

Using styrofoam for flat ceiling roof insulation.

That styrofoam insulation will work but it is not cheap per r value however it gives you a great r value per inch. Image courtesy of d7 spray foam insulation houston tx. It provides r values that range from 3 6 to 4 2 per inch. Here we share the most common mistakes people make when installing flat roofing insulation.

In that situation the foam would be sprayed directly to the backside of the roof sheathing resulting in an un vented roof. Cold roof a very bad idea. Spray foam using spray foam would be an excellent option. Also called styrofoam insulation this is the least expensive material.

One common use of extruded polystyrene foam board is for foundation insulation panels. Roofing insulation is one of the most important and misunderstood building components. Blanket insulation or rigid styrofoam will be the least expensive but depending on the accessibility it may be difficult to. A very energy efficient enclosure results.

Flat roof insulation installation the rigid foam board insulation we used was 2 thick and came in 4 x 8 sheets. Choose this option for areas that need a good amount of strength and water resistance. What insulation to use. This is then covered with a further weatherproofing layer.

This is by far the most expensive option. Closed cell polyurethane spray foam will prove ideal for thermal insulation of a flat roof. This type of un vented roof has proven reliable when properly installed. This foam board insulation is available with straight or tongue and groove edges to help limit air movement.

There are many different types and installation methods out there along with a lot misinformation about which products offer the greatest energy savings. This is an even more dense and more expensive foam board insulation. It provides about r 5 per inch. 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.

To produce a hot roof rigid insulation is fitted outside above the weatherproofing. As part of insulating your flat roof be sure to contain and seal all bypasses. 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. 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.

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.