Search thousands of topics on CostHelper.com

BROWSE ALL TOPICS >> appliances babies & children  cars  consumer electronics health & personal care home & garden personal finance  pets  schools small business weddings
CostHelper > Home and Garden  > Plumbing & Waterproofing > Vapor Barriers

Vapor Barriers Cost


How Much Do Vapor Barriers Cost?

 
low costVapor Retarder Paint: $20-$90average costDIY Installation: $100-$400high costProfessional Installation: $1,000-$3,000+
post E-mail post Post   Comments (1)

A vapor barrier is a high-density material (typically a plastic or foil sheet but sometimes a paint-like coating) used to prevent water vapor from moving from one area to another, where it can create problems with mold, rot, odors or bugs. Vapor barriers can be used in tandem with insulation in walls, in an attic, in a crawlspace or basement, under a concrete slab, over a concrete subfloor before installing wood or laminate flooring, or anywhere it's necessary to reduce the amount of water vapor that passes through. Most materials commonly referred to as vapor barriers are actually vapor diffusion retarders, because they limit the amount of water vapor passing through, but no material can block it completely.

Typical costs:

  • Vapor retarder paint costs about $20-$40 a gallon or $60-$90 for a five-gallon pail. For example, Sherwin Williams Master Touch Latex Vapor Barrier Primer[1] sells for about $80 for a five-gallon pail. Vapor barrier paint is usually white and used as an undercoat primer. It varies by brand, but generally one gallon will cover about 300-400 square feet; a five-gallon pail will cover 1,500-2,000 square feet. Vapor retarder paint is not as effective as a plastic or foil sheet and any damage to the painted surface reduces its ability to reduce the amount of moisture getting through.
  • Rolls of basic clear or black polyethylene plastic sheeting thick enough (usually single ply and at least 6-mil thick ) to be used as a vapor barrier --in walls, flooring, ceilings or under concrete slabs, start around 5 cents to 20 cents per square foot, or $75-$300 for 1,500 square feet. This basic plastic sheeting still allows some water and vapor to pass, and tends to tear easily. Thicker (8-mil to 23-mil), multi-ply vapor barriers (often designed for specific uses, such as under concrete slab or between new wood flooring and a concrete subfloor) can cost 25 cents to $1.50 a square foot, or $375-$2,250 for 1,500 square feet. In many cases these vapor barriers are installed as part of a larger project; if done by a contractor, the vapor barrier will be included in the overall cost. The Energy Efficiency Manual[2] gives an overview of vapor barriers and illustrates the installation of clear poly as a vapor barrier in the new construction of a large master bedroom.
  • Another common usage of a vapor barrier, especially in the Southeast and Northeast, is in the crawlspace under a home. This involves laying flat polyethylene plastic of at least 6-mil, on the crawlspace floor, with about 6 inches extending up the walls. All seams are sealed with special tape. Do-it-yourself materials for a 1,500-square-foot crawlspace start around $100-$400 for basic supplies, and go up for higher-quality materials designed specifically to be used as a vapor barrier. The U.S. Department of Energy[3] recommends using 6-mil polyethylene, overlapping all seams by at least 12 inches, taping all seams and sealing the poly 6 inches up the crawlspace walls, with an optional 2 inches of concrete poured over the poly. Hiring someone to install this in a 1,500-square-foot crawlspace could cost $1,000-$3,000 or more for labor and materials.
  • Crawlspace encapsulation uses a multi-layer 20-mil vapor barrier to completely cover the floor and and walls, while also sealing all crawl space vents and openings, and adding a dehumidifier or sump pump if needed. The total cost with installation is $3,000-$15,000 or more. See How Much Does Crawlspace Encapsulation Cost.
Related articles: Crawl Space Encapsulation, Basement Waterproofing, Basement Remodeling, Building a Custom Home

What should be included:
  • Readers' Digest provides illustrated how-to instructions for installing a 6-mil vapor barrier in a crawl space. Vapor barriers work best in primarily cold climates or primarily hot and muggy climates but not mixed climates where it's both extremely cold in winter and quite hot and humid in summer. The U.S. Department of Energy provides an overview of vapor barriers[4] .
Shopping for vapor barriers:
  • Rolls of basic 6-mil polyethylene sheeting are available at hardware and home improvement stores like Home Depot[5] , and from online sellers such as Amazon[6] . They also sell vapor barriers designed for specific purposes, such as under laminate flooring.
  • For thicker and higher-quality vapor barriers designed for other uses, check stores that sell concrete supplies to contractors. CrawlSpaceInfo.com[7] sells rolls of 8-mil, 12-mil and 20-mil DrySpace vapor barriers designed to be used in crawl spaces (and offers installation in some areas); BasementSystems.com[8] offers referrals to contractors authorized to install it seven-layer, 20-mil encapsulation systems (but does not sell the vapor barrier product direct to consumers).
  • Major manufacturers of vapor barriers include Carlisle[9] , ePro Waterproofing Systems[10] and Fortifiber[11] .
post E-mail post Post   Comments (1)
CostHelper News


Top 7 Ways to Trim Pet Expenses
Pets, for many, are part of the family; another member that needs love, feeding and treatment, just like anyone else in the household. || Posted September 18 2013


Forgotten Expenses In a Home Addition Budget
Items like construction costs, permit fees or debris removal aren't the only expenses to consider when calculating the total costs of a home remodeling project. || Posted August 5 2013

‣ All CostHelper Blog Posts


What People Are Paying - Recent Comments
Crawl space moisture barrier
Amount: $3,200.00
Posted by: Gay Claiborne in Greenville, SC.Posted: August 4th, 2014 11:08AM
Product Used: plastic sheetsContractor: local a/c company (franchise)
Square Footage: 1,500 sq ft
Since installation in March (5 months ago), a terrible odor has emanated through the vent system and into the house. I've had the space tested for mold with negative results. But am considering removing the barrier as the stench (ammonia-like) is intolerable. The installed came back to put in a fan and extra drain pipes with no noticeable effect.
Was this post helpful to you?   yes     no Report prohibited or spam


 

Comment On Your Experience With Vapor Barriers
 
Subject:  *
Amount Spent:  *
Product Used: Contractor: 
Square Footage:   
Comments: 
Purchased:  Year: 
City:  * State:  *
 
Information about you:
Email:  * Email addresses are not displayed.
Name:  This is the name we'll display with your post.
me on this computer
*=required field.
 



External Resources:
  1.  www.doitbest.com/main.aspx?pageid=365&n=0&ntk=default&ntx=mode+matchall&ntt=782211&nty=1
  2.  www.energybooks.com/pdf/D1142.pdf
  3.  energy.gov/public-services/homes/home-weatherization
  4.  energy.gov/energysaver/articles/vapor-barriers-or-vapor-diffusion-retarders
  5.  www.homedepot.com/webapp/wcs/stores/servlet/Search?keyword=polyethylene+roll&langId=-1&...
  6.  www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Dtools&field-keywords=plastic+sheetin...
  7.  crawlspacerepair.com/blog/20-mil-silverback/
  8.  www.basementsystems.com/crawl-space.html
  9.  www.carlisleccw.com/default.aspx?page=template&l0_id=174&category=174
  10.  www.eproserv.com/
  11.  www.fortifiber.com/concrete.html
More Home and Garden Topics
Check Out All Costs for Home and Garden How Much Does Replacing a Water Heater Cost? How Much Do Replacement Windows Cost? How Much Does a Storm Shelter Cost?

Search Thousands of Topics on CostHelper.com

 
Today's Featured Cost Articles

About CostHelper
CostHelper is based in Silicon Valley and provides consumers with unbiased price information about thousands of goods and services. Our writers are experienced journalists who adhere to our strict editorial ethics policy.

CostHelper Community
General Cleaning except windows and VCT
Paid: 0.00
Going rates can vary. However, your best advice is to stay below prices like Service Master or some big franchise charges. In general their help isn't that bright or speaks no English... [more]
-Gary Honey
Office Cleaning Cost
Dental Implants
Paid: 72000.00
Why do full dental implants cost more than purchasing a condominium?... [more]
-Jack Sprat
Dental Implants Cost
Clogged toilet to main line clean out
Paid: 465.00
Came out and pulled toilet ( took a whole 5 minutes)and ran his drain cleaning machine 75ft. to clear out clog which took about 15 minutes or so. Put on new wax ring and toilet back in place... [more]
-
Unclogging a Toilet Cost
Houston Flood
Paid: 450.00
never flooded, not in flood plain but just had 34 inches of rain in 5 days, huge flood 5 minutes away, hoping costs don't increase and that new maps won't include us in flood plain$250,000 building, $100,000 contents, $1250 deductible... [more]
-Thankfully Dry
Flood Insurance Cost
Ear Wax Removal
Paid: 1100.00
Yes, just got the bill! I paid my copay at my visit... [more]
-Michelle S.
Ear Wax Removal Cost
Scamming in Detroit
Paid: 410.00
My husband and I went to a sporting event on the Wayne State Campus. We parked in what was apparently a non-campus location. There were no signs stating that we couldn't park there, so we took advantage of the spot. Bad on us... [more]
-Kris Starosta
Recovering a Towed Vehicle Cost