crawlspace insulation

Crawlspace Insulation Austin - Expert Encapsulation

Is your crawlspace insulation sagging or missing?  Do you have high energy bills?  How is the humidity levels in your home? Musty odors? Cold floors?  Is your home making you sick? 

Stellrr can transform your home into a comfortable, energy-efficient, and healthy place for your family to enjoy life! The first step is to…

Crawlspace Encapsulation

Crawl Space Problem and Stellrr's Encapsulation Solution

Before After

Properly fixing the crawlspace under a home is first about moisture control and second about temperature control. If we make your feet warm, but you are still growing mold under your home, and that air is coming up into your breathing air, how is that a good thing? It’s not!

Unfortunately, competitors are raving about using a paint coating as a vapor barrier applied directly to the subfloor and joists. This is a big no-no! It may help reduce moisture from rotting out organic materials under your home. Still, it does not fix the moisture and air that will come up through the various penetrations that Stellrr addresses with crawlspace encapsulation. 

The right way to fix a crawlspace is to seal it tight and ventilate it right. In every crawlspace we recommend our SaniDry dehumidifier. We install our CleanSpace 20-mil vapor barrier, and use closed cell spray foam to seal up the stem walls, vents, and rim joists. 

Often times we get into much more detail with DimpleMatt for drainage, SmartPipe perimeter drains, Smart Sump pump, and our AI Active Monitoring system so we can be alerted if anything in the system gets out of range. 

Moisture Management

Popular Crawlspace Upgrades

Is it worth getting these upgrades?  It is considering the amount of moisture that enters your home via the crawlspace. In fact, 40% of the air in your home comes up from the crawlspace. It wicks the moisture up from the dirt, even when we are in a drought. A nasty crawlspace can lead to serious health problems. 

Cleanse Encapsulation

Closed Cell Subfloor

An Austin Texas Original Since 2014
Before After

Control Your Home's Air Quality with Stellrr's CleanSpace Cleanse & Crawl Space Encapsulation

Discover the truth about what is going on in your home. You will be surprised by how many house problems are impacted by Stellrr’s solutions. 

Unlike the “other guys,” we don’t believe in Putting Lipstick on a Pig! We believe in fixing it right to last a lifetime.  Watch Shawn’s video training on the 10-Insulation Secrets Contractors Don’t Want You to Know!  Find out…

Stellrr's Process Works

Your Ideal Crawlspace In 3 Easy Steps

Stellrr’s founder Shawn and his team want to give you the best experience possible. If you’ve seen an episode of HGTV, you know that retrofit construction on a home isn’t pain-free. We’ve optimized our process to put your mind at ease while we work toward the end result. Here’s how we do it:

1. Diagnostic Consult & Project Estimate

2. Stellrr Preforms Your CleanSpace Encapsulation

3. Celebrate Your Transformed Home

Price Assurance Guarantee

Crawlspace Insulation Austin Pricing

Stellrr guarantees our price is the lowest available for the work specified. If you find a lower price for the same work package before our installation, we will do our best to match it. Apples to Apples. We stand by every aspect of our work, including the price.  That is Stellrr’s Price Assurance Guarantee!

CleanSpace Cleanse ~ $9k

3 - 4 day process. Includes 1,000 sq ft crawlspace encapsulation. You have a more complex crawlspace requiring several solutions. Full removal, address groundwater drainage (sump pump, drainage matting, smart perimeter drain), separate the house from the earth, insulate, mechanically manage humidity with the SaniDry dehumidifier...

Vented Crawlspace Changeout ~ $6k

2 - 3 day process. Includes 1,000 sq ft crawlspace. Easy access. REMOVE old insulation, R-13 closed cell sprayed to the subfloor. NO groundwater concerns, no skirting or airflow issues, no air-duct encapsulation, or major complications. You can expect decent results for keeping your feet warm, but moisture will still be an issue, and your floor joists could rott out. Do not install vinyl flooring!

Closed Cell Only ~ $4k

1 day process. Includes 1,000 sq ft of crawlspace. Easy access. Only install R-13 closed cell to the subfloor. No removal, no other concerns addressed. Do not install vinyl flooring.

*Prices are averages and will vary depending on the size of your crawlspace, the height of your Austin crawl spaces, how difficult the space is to work and the exact upgrades needed to achieve your goals. You will receive an exact quote for your unique crawlspace during the in-home diagnostic consultation and inspection.

Video Gallery

On The Job Videos

Get a sneak peak at what we do on a project and why we do it. These short videos are fun and entertaining. 

Photo Gallery

Stellrr's Crawlspace Encapsulation Austin Work

Get to know Stellrr and our work with these close up shots of what we do. By now you’ve heard us say there are 93 different Problem Building Assemblies we fix in a home’s attic or crawlspace. Here is a better look at a few of Stellrr’s solutions.

10 Year Stats

A Family of Companies You Can Trust


Meet Team Stellrr - We're Like a Family


What Clients Are Saying

Jeff M.
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Earlier this year, my wife and I hired Stellrr to remove all the spray-in [loose fill fiberglass] insulation from our attic and come back in with deck foam spray. Our goal was to resolve an issue with condensation that formed on the 1959 metal ductwork which pooled and created leaks in our ceiling. Our attic is now approximately 10 degrees warmer than the interior of the home.  It's now summer with temps hitting 100 degrees in central Texas and we could not be happier.
Susan H
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After getting multiple bids with a huge disparity in quotes I opted to hire Stellrr and am very happy I did! Both Wayne and Shawn were very helpful and informative in choosing the best option for my attic space as well as providing great customer service!
Kellie G.
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We highly recommend family owned Stellrr Insulation. They covered [and air sealed] our can/ recessed lights added additional spray foam insulation for us and sealed up our home to save us $$ and keep it cooler and warmer. We were so impressed with their professionalism and their follow up. NO harmful chemicals. We got immediate callbacks and personal meetings. Shawn, Wayne, Shelly & Violet took great care of our family.
Jeff C.
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The Stellrr team did a stellar job with the install spray foam insulation in our attic. I had measured temperatures on the attic side of the metal roof to be over 130 degrees! I just checked again, and now it's 75 degrees without air conditioning it! All of my questions were answered in detail and the job went without a hitch. The temperature in the house is much more stable because of the air barrier. The HVAC comes on much less frequently...
David P.
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The estimating process was transparent and efficient; the pricing fair (you are paying for excellence); customer service as friendly as could be (Stellrr even brought me back lunch on the first day); and the workmanship first rate, with a rare level of conscientiousness and attention to detail. Great friendly crew. Seriously, don't spend time shopping around: just select Stellrr .
Chris H
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Stellrr did an amazing job on insulating my completely gutted "A" Frame [cathedral ceiling] house. I had some special requests and they didn't complain, the just foamed it up. After the remodel the electricity bills are 1/2 of what they used to be. Also it is so quiet, I can't even hear it raining on the roof [because of the spray foam encapsulated attic and roof spray foam insulation in Austin]. The temperature stays very steady and the whole house is always comfortable.
About Us

Meet the Founder & Author

Shawn Mansur shares his mission, vision and what he believes about fixing homes around Austin. If you are serious about getting results on your attic project, don’t miss this video!

Stellrr is a local Austin-founded and owned company. We are not a franchise sending money off to people outside our community. We re-invest back into our community. Building a stronger foundation in Austin TX together. 


Crawlspace Insulation Questions

According to statistics from EPA's Energy Star Association, energy bills can be cut by 30-50% with a properly sealed building envelope versus a vented one. The initial cost of the spray insulation should be seen as an investment as it will pay for itself over time in heating and cooling costs.

Absolutely! Depending on how much groundwater we are trying to manage, we may or may not need several aspects of the Basement Systems CleanSpace Encapsulation. When you meet with your Solution Specialist, we will make recommendations as to exactly what crawl space repairs are needed to solve the problems you are experiencing with your Austin crawlspace insulation. 

All Austin crawl spaces are different. The price depends on the size of the crawlspace, scope of work required to do it right, and the difficulty of the work. We have fixed pricing and do not charge more for nicer parts of town. Everyone gets the same rate. With that said, you can see the 3 main project types pricing above. 

There are many methods and products that are available that can help to improve a humid crawl spaces as well as help to mitigate the issues that excess moisture causes under the house and in your living space. Some of them are more effective compared to others.


Some people simply place a vapor barrier (crawl space encapsulation plastic) over the crawlspace floor. Vapor barriers prevent humidity from moving from the wet ground into the crawl space. This probably does help. However, it doesn’t do anything with the humid air that comes into the vents or prevent mold growth which is bad for indoor air quality and can create structural damage. How can that be dealt with?


Other people lay down a vapor barrier, and then seal up the ven and add a dehumidifier. This is an improvement. However, it still doesn’t address the air leakage coming from the concrete walls or joist bays. The walls have a tendency to soak moisture up from the surrounding ground all year long.


This particular “solution” also can cause your dehumidifier to have to work overtime and cause your energy bills to increase.

Crawl space encapsulation is the only foolproof way of fixing all of your crawl space issues including managing your heating and cooling costs. This process basically transforms your Austin crawl space into an insulated, dry space.

The following are some of the steps that are involved with a proper crawl space encapsulation:

  1. Eliminate the water with crawl space encapsulation. And then keep it out permanently! Before you make any major changes to your home, first you need to get rid of any standing water and deal with any drainage problems. SmartSump is our sump pump for crawl space drainage.
  2. Remediate the crawl space mold. Removing old from the floor joists and cleaning any air ducts that may have mold on them is a good first step to take. Otherwise, you might seal mold up inside of your crawl space. We have a proprietary Mold-X that we use. It kills and neutralizes mold and prevents it from being able to release spores.
  3. Install a crawlspace vapor barrier. Your best option is using our 20 mils CleanSpace vapor barrier and installing it over the crawl space support piers, walls, and floors. It is then sealed on the edges in order to prevent humidity from being able to creep up over the side.
  4. Seal up the crawl space vents. You need to make it as if they were never there to begin with. That way, humid air will not be able to easily circulate. We have Everlast vent covers that we use that do not crack, rot, or warp.
  5. Insulate the rim joist bays and crawlspace walls. That is an effective way to regulate fluctuations in temperature inside the crawl space and to save on your energy bills. The walls are insulated with closed cell spray foam insulation, so you can do insulation removal with the old fiberglass batts in the floor cavities as well.
  6. Seal up all crawl space floor penetrations. Now that the fiberglass batts are gone, you can easily find all of the places where the pipes, wires, and ductwork penetrate the floor. The gaps can then be sealed using our ZypFoam product.
  7. Dehumidify the crawlspace mechanically. How can your crawl space be kept dry after you do all of this work? We have a SaniDry Sedona dehumidifier that we use. The energy-efficient units will maint our crawl space at 50% to 60% RH all year long This way, it will be nearly impossible for any mold to grow there.

What is the result of crawlspace insulation Austin?

No musty, smelly air. The indoor air quality is greatly improved. Fewer problems with allergies. The HVAC is more efficient. Energy bills are lower. Not as many gigantic cockroaches.

Austin crawl spaces are notorious for having mold growing and musty odors. The problem is that moisture wicks up from the ground. Cold air meets warm air and condensates. The moisture then creates a great environment for the decomposition of organic materials.

Some Austin crawlspaces also have standing water that leads to even worse odors.

At Stellrr we use a variety of tools to make your crawlspace dry to slow decomposition of organic materials (floor joist, subfloor, piers and more).  

We commonly use sump pumps to get groundwater out. Then we use our CleanSpace vapor barriers to stop moisture being wicked up from the dirt. We seal the skirting walls and rim joists with closed cell spray foam. And we install a SaniDry Dehumidifier to keep mold from growing, and making a healthy home for your family in Austin Texas. 

Crawl space encapsulation will not eliminate all of the odors you may smell. But it is the correct first step. 

At times after full crawl space encapsulation we have installed our Aspen Whole Home Air Scrubber that keeps the air moving inside the home. 

While we have created the right environment to manage odor,ding materials in your floors, your walls, and other areas that you cannot manage without also continual there are still decomposed builly cleaning the indoor air as well. This makes for a healthy home. The ultimate indoor air quality solution for Austin Texas. 


While we have not needed to do this procedure in Austin TX, several of our Radon Mitigation friends in other parts of the country will install radon control decompression to put the crawlspace under slightly negative pressure. This can help move some of the odors at the floor down into and out of the crawlspace. But it takes with it the warm air and cold air that you paid to condition.  


We usually address crawlspaces with a procedural approach. We can take stage 1 encapsulation, then stage 2 air purification, and stage 3 decompression. and stage 4 closed cell sprayed to the subfloor. Which is the last thing you want to do for health of the home and the occupants. 

Sure. You could. But each person who has tried DIYing it, has told us what a mistake it was. It is so nasty in crawlspaces and very hard work. Plus you really need the right equipment. We use a $150,000 spray foam rig to install the closed cell foam. And when doing removals we use a 23 horse power vacuums and blow it into large dumpsters. People who DIY have used shop vacs and can foam. The difference is 1,000 sq ft per day of work accomplished versus 100 sq ft per day DIY.

Stellrr accepts payment via cash, card, check, and easy financing. On our financing you can pay a low monthly payment or get the loan and pay no interest. Your Solutions Specialist can review the options with you in person.

The good news is that what we do will pay for itself in time. Unlike most other home repairs. We do have a Smart Money Guarantee. It states that you will save the cost to retrofit your home within 10 years, or we will REFUND YOU THE DIFFERENCE. For more details, check out the Cost of Not Hiring Stellrr FAQ page. 

Got cold floors? We fix them!

If you are in the Austin metro area and you have a typical crawlspace, then most likely it is vented. There are vents on the plumbing, air ducts, dirt floor, on the sides, and all over the place – and it is at least as humid in the crawlspace as it is outside.

There are 4 different reasons why this is a problem:

1. Moldy conditions can be created by humid conditions.

When high relative humidity and stagnant air are combined it can lead very quickly to mold growing on the floor joists. When mold starts to grow in a crawlspace, it can be very difficult to get rid of it -especially since once it gets humid it grows back each year!

2. Musty air from a crawlspace can get inside your house.

Duct leakage can result in your HVAC pulling in mold-laden, musty air from your home’s crawlspace. This dirty air gets into your living space as well through cracks and gaps in your flooring (ductwork, electrical, and plumbing penetrations). This happens both when blowing cold air and warm air.

3. Moisture can cause fiberglass insulation to sag and fall over.

Have you ever wondered why the fiberglass batts underneath your floor seem to always fall down. It is true that sometimes gravity causes it. Unless the crawl space insulation batts are secured well between the floor joists (which they often are not), then they will end up falling down. However, humidity can also cause them to fall. Moisture within the air saturates the batts which results in them collapsing underneath their own weight. So much for having insulated floors!

4. Insects really like moist, warm environments.

So if you like camel crickets, spiders, and roaches, check out your crawl spaces in the springtime. You may see several of these. Moist wood inside of crawlspaces is very hospital to termites.

So many problems are caused by crawl spaces. It makes you wonder why so many houses were built with one in the first place. Basically, they are dirt-floor, uninsulated basements that have open windows.

They really start to get nasty in the spring. So it is best to get crawl space repair services before then.

Encapsulation really does it. It helps to keep the air from the crawl space from your house and mitigates the negative impacts that humidity under your house can have. Encapsulation is also able to extend the lifespan of your home’s HVAC system by reducing the growth of microbes on the indoor coil and improving efficiency and reducing cooling costs.

It could even increase your home’s value. Numerous homebuyers love the thought of having a dry, clean crawl space that is free of problems -especially if they have had a bad one before.

If you are completely grossed out by what is occurring right now in your crawl space or you wonder why your allergies appear to be so bad even when you are inside – then the answer to your problems could be crawl space encapsulation.

Would you rather not go down there to see if there is a crawl space issue? Don’t worry. We can handle your crawl space insulation or your attic insulation for you.

If you have or are considering Luxury Vinyl Plank on a Austin TX home with a crawlspace below, don't do it!


Not until you have taken care of the building science to prevent from rotting out your joists and subfloor in rapid time. 


Everyday moisture is wicked up through your subfloor into the home . When you install vinyl (a vapor barrier) above the subfloor, the vapor cannot go up and exit the crawlspace as it has done for the last 20, 60, 100 years. 


So the moisture gets stuck in the wood and goes from a slow decomp level to a water logged decomp level. 


But there is good news. If you have a crawlspace encapsulation, where EVERYTHING below the subfloor is kept dry, humidity managed, then you can install LVP safely. 


Have you priced out replacing all of your joists and subfloor? Well, let's say, kiss that kid's college tuition away for 4 years. 


Can't we just spray closed cell to the subfloor and be done with it? Look for my answer in the next FAQ.

If your crawlspace is 10 feet off the ground and you have no skirting, then you are not trapping moisture. It is like you have a second story porch and the best answer is to use 2-pound closed cell spray foam on the subfloor. 


However, if you have a crawlspace low to the ground, you don't want to spray the subfloor because you dramatically change up the way the building has been functioning... in a bad way.

For the last 20, 60, 100 years the moisture being wicked up from the dirt  has been flowing up through your subfloor. 


It was evenly distributed between the joist, piers, and subfloor. 


But when you stop the moisture from flowing through 95% of the space, then it gets super concentrated on your joists.


Then you go into rapid decomposition of the exposed organic materials. 


It is not uncommon for a 100 year old home with original joists to then have them rot out in the next 5 years because the change in dynamic. 


Top Crawlspace Company Serving Central TX

SERVICE AREA: Stellrr offices are in South Austin Texas, but we have a wide service area. We were founded by and still are Austin-owned and operated by the Mansur family. You can find Stellrr on the major review sites: Houzz, Yelp, BBB, Porch, HomeAdvisor, and find Shawn’s personal Linkedin here. We regularly take on projects from Taylor to Bastrop to Canyon Lake to Fredericksburg to Marble Falls. Yes that includes Round Rock, Cedar Park, Lakeway, Dripping Springs, San Marcos, Canyon Lake, Elgin, Pflugerville, Leander, Spicewood, and so much more in the Austin area. So if you are within 60 miles of Austin, we can help you out. There is hope if you are outside the area, like in San Antonio. We will travel for the right project. Let’s talk about it. 

Stellrr Insulation & Spray Foam is located on 401 Congress Ave, #1540, Austin, TX. From Austin-Bergstrom International Airport (AUS) take Hotel Dr to State Hwy 71 W/E Ben White Blvd, and head southwest on Presidential Blvd toward Service Dr. Then slight right onto Service Dr, and turn right onto Hotel Dr. Next turn right onto Spirit of Texas Dr, and turn left to merge onto State Hwy 71 W. Afterwards, keep left to stay on State Hwy 71 W, and continue on State Hwy 71 W/E Ben White Blvd to N Interstate 35 Frontage Rd. At this point take exit 233 from I-35 N/US-290 E, and keep left to continue on State Hwy 71 W/E Ben White Blvd. After that use the right 2 lanes to merge onto I-35 N/US-290 E toward Waco, and take exit 233 toward Riverside Dr. Then take E Riverside Dr and S Congress Ave to E 4th St, and merge onto N Interstate 35 Frontage Rd. Next use the left 2 lanes to turn left onto E Riverside Dr, and turn right onto S Congress Ave. Finally, turn right onto E 4th St, and Stellrr Insulation & Spray Foam will be on the left.

We’re open: Monday-Saturday 06:00 – 22:00

For additional questions, you can call us at (512) 520-0044 or find us on yelp

Get The Dry, Clean and Efficient, Healthy Home You Deserve!

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