It depends on what you mean by “support”. It will hold the tub up but it will flex. The movement of the flexing may loosen plumbing connections ; not the first time , but movement over an extended time could work things loose. It may even cause leaks at what ever caulk or trim is used on the top edge of the tub.

Can foam board support weight?

Q: How much weight can EPS Carry? ASTM C578 standard for EPS type I is 10psi or 1,440 pounds per square ft (1 square foot is equal to 144 square inches). One square inch of Type I EPS can support 10 pounds; however, set a one square foot board on the foam and it can support 1,440 pounds.

Is XPS foam styrofoam?

Styrofoam™ Brand Square Edge Insulation* is an extruded polystyrene foam (XPS) insulation board that meets the needs of the commercial foundation and building floor slab market and can also be used for attics, foundations/slabs and crawl spaces in residential applications.

What is XPS rigid foam?

Extruded polystyrene (XPS) foam is a rigid insulation that’s also formed with polystyrene polymer, but manufactured using an extrusion process, and is often manufactured with a distinctive color to identify product brand.

Is XPS a foam plastic?

XPS foam board is a rigid thermoplastic material manufactured from polystyrene. Polystyrene is a synthetic, hydrocarbon polymer derived from benzene and ethylene, two petroleum products.

How much weight can Styrofoam hold in water?

One 10″ x 20″ x 96″ (25 x 51 x 244 cm) STYROFOAM™ Brand Buoyancy Billet has an average buoyancy that is approximately 150 percent greater than a 55-gallon (208-liter) drum. In fact, just one cubic foot (0.03 cubic meter) of the foam billets can float up to 55 pounds (25 kilograms).

How much weight can polystyrene hold?

1 cubic meter of standard grade polystyrene will support up to 970 kilos of weight when placed in water. The calculation is 1 cubic meter to hold 1000 kilos minus the weight of the polystyrene.

Does XPS absorb water?

Independent research2 has shown that over time XPS will actually absorb and retain more moisture than EPS resulting in a significant decrease in R-value. One of the studies showed XPS retained 19% water absorption compared to 5% for EPS after being buried below grade for 15 years.

Is XPS strong?

Strength and Rigidity of XPS Foam

XPS foam has a tightly packed closed-cell structure that makes it extremely rigid and strong, making it ideal for structural panels.

Is XPS waterproof?

XPS. XPS is another waterproof, rigid insulation material. It is made from polystyrene pellets, which are mixed with various chemicals, then heated until the pellets liquefy.

Where would you use XPS insulation?

Manufacturers are now reporting the Long Term Thermal Resistance (LTTR) of their XPS products to account for the reduction in r-value over time. XPS provides increased stiffness and rigidity, making it suitable for use on roofs, below grade, below slab, and other applications.

Is XPS foam flammable?

While the code requirements for continuous insulation help to improve efficiency, they raise another challenge: the foam plastic insulations commonly used for continuous insulation—polyisocyanurate aka polyiso, expanded polystyrene also known as EPS, extruded polystyrene aka XPS and spray polyurethane foam or SPF—are

Does XPS lose R-value?

The trapped gases in the cells of polyiso and XPS foam assist to provide an initial high R-value. During the life of these foams, air from the atmosphere diffuses in and the trapped gases diffuse out. The result is polyiso and XPS lose R-value over their lifetime.

Does polystyrene foam float in water?

Quote from the video:
Quote from Youtube video: You can float.

What is the buoyancy of Styrofoam?

Quote from the video:
Quote from Youtube video: The buoyant force is equal to the weight of a volume of water equivalent to the volume of this entire block of styrofoam which is 700 cubic inches when it's all the way under the water.

What kind of foam is most buoyant?

Marine Floatation Foam

This type of marine foam is known for its high buoyancy, which makes it ideal for use in boats and other sea-faring vessels.

Does foam add buoyancy?

To an extent, adding foam to a boat will help it float but perhaps in a way different than many people assume. The common train of thought is that a boat filled with flotation foam will float better than a boat without foam.

What material has the most buoyancy?

You can do better than trapped air — helium! It is be so buoyant that even without the water below a balloon filled with it will float away, due to the fact that the buoyant force of the displaced air is greater than the graviational weight of the helium plus the balloon.

What is the most buoyant solid?

Aerogels are among the lightest solid materials in existence, and are created by replacing the liquid component of a gel with a gas – this results in their extremely low density, and has earned them the nickname of “frozen smoke.” Now, scientists have created a new type of aerogel that is inspired by the feet of the

What is more buoyant cork or foam?

On a technical note, foam is not as dense as cork, and is normally more buoyant.

How do you make heavy things float in water?

Increase the density of the water so that the water becomes denser than the object. For example, an egg will usually sink in a glass of water, because it is denser than water. Adding salt to the water increases the density of the water, allowing the egg to float.