What is the R-value of Dow blue board?

DuPont™ STYROFOAM™ Scoreboard Insulation Board (Blue Board) 4 ft by 8 ft Sheet, 1" Thick, R value 5.0 A nonstructural, rigid board insulation manufactured of Extruded Polystyrene Foam (XPS).

What is the R-value of 2 inch Blueboard?

DOW BLUE BOARD 2" 2'X8' 250 PSI R-VALUE=10.8.

What is the R-value of 1/2 inch Blueboard?

DOW BLUE BOARD 1-1/2" 4'X8' 250 PSI R-VALUE=8.1 SCORED SQ EDGE.

Is Blue Board good for insulation?

DuPont Styrofoam™ Blue Board is a cost effective insulation that can be used in a wide variety of applications, including foundation walls, under siding and exterior sheathing, and between wall studs. Blue board needs to be covered with a thermal barrier on the inside or with siding or other covering to the outside.

What insulation board has the highest R-value?

Polyisocyanurate: Known as polyiso for short, polyisocyanurate foam has the highest R-value per inch (R-6.5 to R-6.8) of any rigid insulation.

Why R-value is Important for Foam Board Insulation

When should I use Blueboard?

Blue board is used for veneer plastering, and the surface paper has special absorption qualities. It has a high water and mold resistance and there are fewer steps involved in veneer plastering. Blue board drywall is not made for mud, tape, or paint.

What is the difference between blue and pink foam board?

Both are manufactured using the same process and contain similar chemical components. The two products also have the same insulating power. However, blue foam boards are manufactured by Dow Chemical Co. whereas the pink foam boards are manufactured by Owens Corning company.

What is the R-value of blue STYROFOAM insulation?

Extruded polystyrene foam (XPS) also known as blue board or pink board comes in many different thicknesses and edge profiles. This insulation board is probably one of the most widely used foam board insulation products in the residential construction industry. XPS has an R value of 4.5 to 5.0 per inch of thickness.

What is a good R-value for exterior walls?

Typical recommendations for exterior walls are R-13 to R-23, while R-30, R-38 and R-49 are common for ceilings and attic spaces. See the Department of Energy's (DOE) ranges for recommended levels of insulation below.

What is the R-value of closed cell spray foam?

Closed cell spray foam has an R-value of R-7 per inch. In comparison, open cell spray foam has an R-value of R-3.8 per inch.

What is the R-value of 1.5 inch foam board?

Owens Corning R- 7.5, 1.5-in x 4-ft x 8-ft FOAMULAR Unfaced Foam Board Insulation. item number 5. it has a rating of 4.3939 with 33 reviews.

What is the R-value of 2 pink foam board?

With an R-value of 13.1 for a 2" thick sheet only two 2" sheets are required to achieve R-25. 2. Extruded polystyrene or XPS (foam is usually pink or blue) XPS has an R-value of 5 per inch of thickness requiring 5" of insulation to achieve R-25.

Which board is best for insulation?

Polyurethane (PUR) is one of the most efficient insulation materials on the market. PUR is available in the shape of insulation boards or foam. However, the boards have a better insulation value than the foam variant. Moreover, these boards guarantee a certain thickness in advance and nothing has to be taped over.

Can I just paint blue board?

Painting the blueboard will not cover up all your joins. Also, due to the dryness of the blueboard you would need a number of coats as the first couple tend to suck into the blueboard, this can also lead to colour variation and brush marks.

Is Blueboard better than drywall?

The benefit of using blue board is the strong absorption of the blue paper. Since the paper absorbs much better than normal drywall, the overall product is much smoother and evenly toned across the entire wall. The joints are not as obvious, and the final texture is incredibly smooth to both touch and sight.

Is blue Board water proof?

It's a type of drywall plaster that can protect against scrapes and dents when used alone. Blue board may also conceal seams or joints between wall panels. It's not waterproof or water-resistant, so it could potentially be destroyed to do this.

Does foam board insulation lose its R-value?

Insulation R-value is directly correlated to maximum energy efficiency in a building envelope; higher R-values translate into increased savings. In below grade applications, foam insulation is exposed to moisture and could lose R-value over time if this moisture is absorbed.

Does rigid foam lose R-value?

A popular rigid insulation choice, XPS features an initial R-value of R-5 per inch. That said, the long term R-values of this foam board decline over time. For example, after just 5 years, an XPS board will see its R-value fall by 10%, and even more going forward.

Does foam board insulation need a vapor barrier?

Foam insulation usually does not require a vapor barrier. For some foam insulation types, such as closed-cell spray foam and foam board insulation, the insulation itself stops the movement of most water vapor.

What is the R-value of Rockwool?

Rockwool has excellent heat retention.

While fiberglass insulation is capable of offering an R-value of about 2.2 to 2.7 per inch of insulation, Rockwool has an R-value between 3.0 to 3.3 per inch of insulation.

What is the R-value of 2 inch spray foam?

R-Value In 2 Inches Of Spray Foam

The R-value ranges from R-3.5 to R-3.6 per inch. The filling of a 2×4 cavity yields about an R-13.

What is the thinnest insulation with highest R-value?

Aerogel insulation offers the highest R-value of any insulating material at less weight and thickness—ideal for construction, refineries, pipelines, and thin-gap thermal barriers.