Vanity Vent Foam Insulation Blocks material is:

  • Offered in a stunning, premium 2-inch thick, 6” x 7 1/8”, Classy Charcoal Black Foam Block (please measure your crawl space vents per below…)
  • Vanity Vent Foam Insulation Blocks material is proven durable, flexible, lightweight, resilient, highly resistant to moisture because it has impermeable thick cellular walls. This special material is characterized by its superb toughness, strength and cut/tear resistance.  
  • Our Foam Insulation Blocks are CNC Custom Cut with high quality precision to fit perfectly in your foundation crawl space vent openings
  • Our Foam Insulation Blocks are impervious to mildew, mold, rot and bacteria.
  • Our Foam Insulation Block material is widely more preferred in the construction industry than low-density foam for heavy-duty applications
  • Used in the marine industry, our material is a closed cell, high density foam that meets or exceeds Military grade requirements
  • Service Temperature °F -30 to 180
  • R- Value 7.4 + 1.0 = 8.4 plus your Vanity Vent Vent Cover… Compare your foundation cinderblock wall has an R- Value of 2.0
  • Our Foam Insulation Blocks are CFC Free, Ozone Friendly and 100% Recyclable. Not classified for hazards to the environment
  • 100% Designed and Manufactured in America, and
  • The Classy Charcoal Black color is very, very attractive!

Note: Custom sizes are available (contact or call 503.548.7444).

Luxury 2-inch Foam Insulation Blocks

  • These 2-inch thick Vanity Vents Foam Insulation Blocks are fabulous to install (very fast and easy – takes 2 Seconds).
  • This is the Luxury version of foam block insulation for foundation vent openings.
  • No more Styrofoam – it’s super bad for the environment and it crumbles in year 1.
  • Vanity Vents Foam Insulation Blocks’ estimated useful life in the industry is at least 10 years and often much, much longer.
  • Our Foam Insulation Blocks squeeze into the opening and then expand to form a water tight barrier… no moisture will get thru…
  • Critters don’t like it either…

Our foam is cut via CNC to meet the measurements provided in this listing. There is a tolerance in the foam thickness of +- 1/8 of an inch. This is normal for foam. If your project requires exact thickness measurements please consider purchasing a small quantity to test for your project requirements.

All values reported are typical values. We cannot guarantee the applicability or the accuracy of this information or the suitability of the product for any particular purpose. This product is sold without warranty, expressed or implied. (Unless stated otherwise.) Buyer assumes all responsibility for loss or damage arising from the handling and use of this product, whether done in accordance with directions or not. Statements concerning the possible use of this product are not intended as recommendation to use this product in the infringement of any patent.

VV Video – Welcome*

Vanity Vents Foam Insulation Block Fact Sheet


Vanity Vents Foam Insulation Blocks are made from 100% Polyurethane!


Polyurethane Insulation is among the best-performing insulation materials in construction today and has been for over 50 years!


Polyurethane insulation has been known to last 30-50 years!


Studies indicate that Polyurethane Foam has an average R-value of up to 6.5 per inch of thickness. STYROFOAM is rated at an R-value of up to 5.0 per inch. Fiberglass blankets or rolls provide an R-value of up to 3.2 per inch in comparison. Polyurethane Foam is a better insulator.

VV Video – How to Install VV and Foam*


Q1. Does double the insulation meet double the savings?

DOUBLING the thickness of insulation which doubles the insulation’s R- value, cutting heat loss in half. Each time the insulation layer is doubled in thickness, this rule applies.

Q2. Does mold grow on foam?

As a product, foam insulation does not attract mold. And unlike wood or metal, foam does not rot, rust or deteriorate.

Q3. Is all polyurethane foam toxic?

No… Polyurethane Foam is not toxic! This is the same stuff in the mattress that you sleep on at night. Polyurethane is normally considered to be biochemically inert and will not pose a threat to the environment or pose problems for consumer use… it is considered environmentally friendly, too, as it is non-toxic.

Q4. What is CertiPUR-US Certified?

CertiPUR-US-certified foams meet standards for content, emissions and durability, and are analyzed by independent, accredited laboratories.
The CertiPUR-US foam certification program, administered by a nonprofit organization, was established in 2008 to combat substandard foams imported from other countries. In some cases, these substandard foams contained substances that had been banned in the U.S. or were listed by chemical watch groups as potentially being harmful.

Q5. Can you trim to fit Vanity Vents Foam Insulation Blocks?

You can trim your Foam Blocks to size if necessary. Your Foam Blocks will cut extremely quickly and smoothly using a simple, serrated bread knife. Cut the foam in one direction only pulling towards you (do not saw with the knife). Make multiple passes in the same direction if necessary to get thru the entire thickness of the foam.



100% Polyurethane

Recovery Rate


Compression Rate



1.2 (high)


Will last 7-10 Years (normal wear)


Fire Retardant


CertiPUR-US | Made in : USA See: Here for more CertiPUR-US information.


  • Polyurethane Foam insulation is one of the most highly effective methods of insulating buildings today! It provides the permanent and damage-resistant insulation for a home while improving living comfort and reducing utility (heating and cooling bills).
  • The insulating property of Polyurethane Foam is due to its structure of small cells, together with the composition of the gas occluded inside these cells. Applying Polyurethane Foam makes building envelopes much more airtight and waterproof, because it provides seamless insulation. Since Polyurethane Foam doesn’t leave any gaps between the insulation and the substrate, it can also act as an air and vapor barrier and replace house wrap when used as exterior insulation.
  • Today, Polyurethane Foam is often used to insulate large areas like foundation walls, but it can also be used on a smaller scale, e.g. to insulate crawl space vent covers and/or the perimeters of doors and windows.
  • The lifespan of Polyurethane will depend on the application and the type of use. Under normal use and regular wear and tear, we can expect a lifespan of up to 50+ years for building insulation.

  See additional information and further clarification of the
information covered in this video on other pages of the Vanity Vents website. The suggestions and methods expressed on this video are purely the opinion of the author and in no way should be considered professional guidance. Please check your local experts for further input if necessary.