About Indoor Environmental Management

Indoor Environmental Management (I.E.M) is a full service environmental company located in Tallahassee, Florida and serving the surrounding areas. Mr. John Hassler, founder and owner of Indoor Environmental Management has over 30 years of building science experience in the region of the panhandle, from Tallahassee to Jacksonville.

We at Indoor Environmental Management have extensive knowledge of building science and years of experience in residential and commercial building, indoor air quality assessment, and mold remediation. Our focus at Indoor Environmental Management is on air quality evaluation, building diagnostics, mold remediation, water intrusion investigation, water/moisture control, and crawlspace rehabilitation services.

At Indoor Environmental Management our top priority is your continued health and safety in your home, office building, restaurant, grocery store etc...

Testimonials From Our Customers
  • "I can highly recommend IEM. They were very professional, tremendously courteous, and surprisingly inexpensive..." Read Full Testimonial

    Tanju C. of Jacksonville, FL

    Customer Testimonial

              Our frame house is located right on the river and has a basement. Its size is approximately 1,500 square feet with about 1/3 on soil and 2/3 on concrete slab. The basement was quite damp and during strong rains could take on about 2 inch of water. The old sump pump could minimize the damage, but the accumulative damage was pretty strong. Especially in a frame house the structure is very susceptible to water and the damage and odor travels throughout the house. When we bought the property last fall we decided right away that this has has to be fixed right away. After researching a couple of companies we decided to go with IEM. They were courteous on the phone and were ready to dispatch a specialist the next day for a free estimate. PJ arrived at our house and did a thorough inspection. Since nothing had been done in the 100 years before (except for the old sump pump) and our location right on the river he recommended to encapsulate the basement and install further water barriers around the property. So in detail they performed the following: Basement Encapsulation: ---------------------------------- - remove old insulation, regrade the dirt, clean and disinfect the subflooring system - dig a trench around the perimeter of the basement - install a pipping system and and backfill the drainage system - remove all 15 windows units and replace it with newer windows - install drainage matting throughout the basement ground cover - remove old sump pump and install a sump pump with 2 failover systems - ensure all trench systems feed into the sump pump for max efficiency - install a 20 millimeter thick polythene membrane on the ground - install the polythene membrane on the wall to a height of 4 feet - install an industrial sized dehumidifier to eradicate any further excess moisture Foundation Wall Repair: -------------------------------------- - remove plants, pavers and anything else which might interfere with work progress - excavate soil around foundation wall completely around the building to about 2 feet - clean and prep foundation wall surface - repair mortar joints and concrete block surfaces - apply a coating of surface bonding cement to all foundation wall surfaces - apply commercial waterproofing compound on all of the surface areas of the foundation wall and footer- install a french drain system and a discharge line around parts of the perimeter The contract price was set fixed at around $45k and IEM estimated a 2-3 week time frame. During the project Clay and his amazing team encountered tons of unanticipated issues. The strong roots from the trees around the building had disintegrated the walls much more than was visible at first. Many bricks where simply hollowed out and Clay and his team were rebuilding a good part of the wall foundation completely from scratch. Since we're located in a historic district IEM could not simply install new windows, but were painstakingly remodeling each of the 15 windows by hand (sanding down, paint in previous color, sand clean each glass plate, fix all joints) and now those historic windows look like new. IEM also took care of getting the permits from the historic society to make the necessary changes. Clay and his team worked highly professional and efficient. Nevertheless it took more than double the anticipated time to finish the project. All the trouble with the windows was neither in the contract nor was it anticipated. Nevertheless IEM did not charge us a dime extra. I can highly recommend IEM. They were very professional, tremendously courteous, and surprisingly inexpensive regarding all the work that had to be done. Moreover, there were so many aspects to consider and it was great to have the same points of contact for all those issues (Clay and PJ). Both were very responsive to any concern and addressed them all. Moreover, even the company owner and basement guru John come out several times to make sure everything went smoothly. We feel very happy that we chose IEM. Our once damp basement which was ruining our frame structure is now a dry basement and solid for the next 50 years! The odor is completely gone and the whole house should get less hot in summer and less cold in winter.
    Tanju C.
    Jacksonville, FL
  • "Andy; Just wanted to give you a quick report and BIG thank you." Read Full Testimonial

    Steve S. of Jacksonville, FL

    Customer Testimonial

              Andy; Just wanted to give you a quick report and BIG thank you.After all the rain we have had this week, our crawl space is DRY! I crawled under the house this morning and could not find any wet spots. The pump is working well and sending water out onto the driveway - as designed. The system is working perfectly. So thank you. In the past, we would have had significant standing water until I hooked up the pump. Also, with the dry system and dehumidifier, I do not have to worry about mold growing!Just wanted to let you know Andy and thank you. Have a great weekend.Cheers – Steve
    Steve S.
    Jacksonville, FL
  • "Our architect and subcontractor are also very impressed with the quality of your work." Read Full Testimonial

    Marie S. of Lake Butler, FL

    Customer Testimonial

              You were willing to educate me. I really got a lot out of the book you sent me. Our architect and subcontractor are also very impressed with the quality of your work. Thank you.
    Marie S.
    Lake Butler, FL
  • "Indoor Environmental Management did some great work for me. I’ve been very happy with the work they did..." Read Full Testimonial

    Ward H. of Tallahassee, FL

    Customer Testimonial

              Indoor Environmental Management did some great work for me. I spoke to the owner, John Hassler, Sr, and the next day they were out at my house getting to work. I never even saw the crew since I was at work all day, but I could see the progress they were making. At the end of the job, they left the work area clean. I didn’t have to pick up any mess at all. I’ve been very happy with the work they did and I would definitely recommend them to everyone I know.
    Ward H.
    Tallahassee, FL
  • "Thanks again for everything!!Lisa" Read Full Testimonial

    Lisa N. of Valdosta, GA

    Customer Testimonial

              Andy; Thanks for the prayers for my mom. We are just taking day by day. I am sure there will good days along with some bad, but as long as she is comfortable and still here with us we are thankful.Boy that insulation was looking rough. We are so glad we had you do the work and we will definitely recommend you and your company. It has been a pleasure doing business with you Andy.Thanks again for everything!!Lisa
    Lisa N.
    Valdosta, GA
  • "Thanks Andy really appreciate your concern for your clients, follow up, & everything else u do to do a..." Read Full Testimonial

    Emory D. of Alachua, FL

    Customer Testimonial

              Thanks Andy really appreciate your concern for your clients, follow up, & everything else u do to do a good job. You are a real asset to your employer. You have my permission to fwd to whom ever you choose. Emory D.
    Emory D.
    Alachua, FL
  • "You have my genuine gratitude for the service and attentiveness you have provided." Read Full Testimonial

    H. S. of Tallahassee, FL

    Customer Testimonial

              Just a note to tell you how appreciative I am for the effort you have put forth for me in the matter of the mold on the floor joists of the home I am selling. Selling a family home is always stressful but to find it has issues that I was unaware of raises the stress level. You have my genuine gratitude for the serviceand attentiveness you have provided. Thank you!
    H. S.
    Tallahassee, FL
  • "John Hassler and the entire team were true professionals." Read Full Testimonial

    Richard G. of Tallahassee, FL

    Customer Testimonial

              I am a very satisfied customer of Indoor Environmental Mgmt. John Hassler and the entire team were true professionals. They went above and beyond to insure that our crawl space concerns were addressed. He (John) took ownership of the problem which gave us confidence that the remedy (encapsulation and structural) would be done the right way even if it exceeded the original quote. Additionally, our job was completed ahead of the schedule and I have never seen such a hard working implementation crew as Carlos's team. Everyone we dealt with at IEM was responsive and professional.
    Richard G.
    Tallahassee, FL
  • "Highly recommend to anyone who needs this job done!" Read Full Testimonial

    Sandra R. of Tallahassee, FL

    Customer Testimonial

              To everyone at IEM, Thank you, thank you, for your very propt service and wonderful crawl space reconditioning, everything was great! Highly recommend to anyone who needs this job done!
    Sandra R.
    Tallahassee, FL

Local Waterproofing and Mold Removal Contractors in Florida

We'd like to show you how we can help you waterproof your basement or control moisture in your crawl space. We have the experience, equipment, and best practices you need to ensure a dry basement and peace of mind.

At Indoor Environmental Management, we offer free, no-obligation waterproofing, crawl space repair, and environmental service quotes to homeowners within our service area.

Looking for a price? Get a no cost, no obligation free estimate.

our service area

We serve the following areas

  • Atlantic Beach
  • Brooker
  • Bryceville
  • Callahan
  • Day
  • East Palatka
  • Elkton
  • Fernandina Beach
  • Flagler Beach
  • Fleming Island
  • Florahome
  • Glen Saint Mary
  • Green Cove Springs
  • Greenville
  • Hampton
  • Hastings
  • Hilliard
  • Jacksonville
  • Jacksonville Beach
  • Jasper
  • Jennings
  • Keystone Heights
  • Lake Butler
  • Lake City
  • Lawtey
  • Lee
  • Live Oak
  • Lulu
  • Macclenny
  • Madison
  • Mc Alpin
  • Melrose
  • Middleburg
  • Monticello
  • Neptune Beach
  • Orange Park
  • Palatka
  • Palm Coast
  • Pinetta
  • Ponte Vedra
  • Ponte Vedra Beach
  • Raiford
  • Saint Augustine
  • Saint Johns
  • Sanderson
  • Starke
  • Waldo
  • Wellborn
  • White Springs
  • Yulee
Our Locations:

Indoor Environmental Management
3520 Weems Road
Tallahassee, FL 32317
1-850-634-4017


Indoor Environmental Management
University Blvd
Jacksonville, FL 32216
1-904-323-4475