Hiring an insulation contractor is an important decision for any homeowner. Good insulation can help keep your home warmer in the winter, cooler in the summer, and more comfortable all year.
But not every insulation job is the same. The right material, correct R-value, proper installation, and good air sealing all matter. If you hire the wrong contractor, you may end up paying for work that does not solve the problem.
So, what questions should you ask an insulation contractor before hiring them?
If you live in Spokane, WA, these questions can help you compare contractors, understand your options, and choose a company you can trust.
1. Are You Licensed and Insured?
This should be one of your first questions.
Ask the contractor if they have the proper license and insurance for the work they perform. Insurance is important because it can help protect you if an accident or property damage happens during the project.
A professional contractor should be comfortable answering this question. If someone avoids the question or cannot provide proof, that is a warning sign.
You should also check whether the contractor is familiar with the rules and building requirements that apply to your area.
Tip: Do not be afraid to ask for proof. A good contractor should understand why you want to protect your home.
2. How Much Experience Do You Have With Insulation?
Experience matters when it comes to insulation installation.
Ask:
- How long have you installed insulation?
- Do you work in homes like mine?
- Have you worked on homes in Spokane?
- What types of insulation do you install?
Different homes can have different insulation needs. An older home may need a different approach than a newer home. An attic, wall, crawl space, or basement may also require different materials and installation methods.
A local contractor may also have a better understanding of the weather and housing conditions in the Spokane area.
Therma-Lock Insulation is based in the Spokane area and serves homeowners throughout Eastern Washington and North Idaho. The company offers attic insulation, batt insulation, blow-in insulation, spray foam insulation, and attic insulation removal and replacement.
3. What Type of Insulation Do You Recommend for My Home?
There is no single type of insulation that is perfect for every home.
Depending on your project, a contractor may recommend options such as:
- Fiberglass batt insulation
- Blown-in fiberglass insulation
- Dense-pack insulation
- Closed-cell spray foam insulation
Ask the contractor why they recommend a certain product.
Do not choose insulation only because it is the cheapest option. Ask how the material will perform in your specific space and what benefits it can provide.
For example, Therma-Lock lists fiberglass batts, fiberglass dense pack, and closed-cell spray foam among its insulation options.
A good contractor should explain your choices in simple language instead of trying to confuse you with technical terms.
4. What R-Value Do I Need?
R-value is one of the most important terms to understand when talking about insulation.
In simple terms, R-value measures how well insulation resists heat flow. A higher R-value generally means greater resistance to heat movement.
But the right R-value depends on where the insulation is being installed, the insulation material, and the needs of your home.
Ask the contractor:
“What R-value are you recommending, and why?”
You should also ask how much insulation will be installed to reach that R-value.
Therma-Lock states that it recommends R-21 for walls, R-60 for attics, and R-38 for floors over crawl spaces in Eastern Washington and North Idaho.
The important thing is not simply hearing a number. The contractor should explain what that number means for your home.
5. Will You Inspect My Existing Insulation First?
A contractor should look at your current insulation before telling you what you need.
Ask them to inspect the attic, walls, crawl space, or other areas involved in the project.
They should look for problems such as:
- Low insulation levels
- Damaged insulation
- Wet insulation
- Gaps
- Air leaks
- Poor ventilation
- Signs of moisture
- Areas where insulation has settled
This is especially important in an older home.
Therma-Lock recommends a free attic insulation analysis for homeowners with homes older than five years.
A proper inspection helps the contractor understand the problem before recommending a solution.
6. Do You Include Air Sealing?
This is a question many homeowners forget to ask.
Insulation and air sealing are not exactly the same thing.
Insulation helps slow heat movement. Air sealing helps stop unwanted air from moving through gaps and cracks.
Ask:
“Will you find and seal air leaks before installing the insulation?”
Air leaks can occur around pipes, wiring, vents, attic openings, and other areas.
A contractor who looks at the whole system can give you a better idea of what your home needs instead of simply adding insulation on top of existing problems.
If you are dealing with drafts or rooms that are hard to keep warm, air sealing may be an important part of the conversation.
7. Do You Remove Old Insulation or Install Over It?
Sometimes old insulation can remain in place. Other times, removing it may be the better choice.
Ask the contractor:
“Does my existing insulation need to be removed before the new insulation is installed?”
This can depend on its condition.
If insulation is wet, contaminated, badly damaged, or otherwise unsuitable, the contractor should explain your options.
Therma-Lock provides attic insulation removal and replacement services in the Spokane area.
Do not assume that adding more insulation is always the answer. First, find out what condition your existing insulation is in.
8. How Much Will the Whole Project Cost?
Price is important, but the lowest quote is not always the best value.
Ask for a detailed estimate that explains what you are paying for.
Your estimate should make it clear:
- What type of insulation will be used
- How much insulation will be installed
- The expected R-value
- Whether old insulation will be removed
- Whether air sealing is included
- Labor costs
- Cleanup
- Any additional work
- The total project price
Try to compare several estimates based on the same scope of work.
For example, one contractor may give you a low price because they are installing less insulation or leaving out important preparation work.
A clear quote makes it easier to compare your options.
9. How Long Will the Job Take?
Ask about the expected project timeline before you hire the contractor.
The answer can depend on the size of your home, the areas being insulated, the type of insulation, and whether old insulation needs to be removed.
Ask:
“How long will the project take from start to finish?”
Also ask when the contractor can begin.
A professional should give you a realistic answer rather than making a promise they cannot keep.
10. Do You Provide a Warranty?
Always ask about the warranty.
You should understand what is covered and how long the coverage lasts.
Ask:
- Is there a workmanship warranty?
- Is the insulation covered by a manufacturer warranty?
- What problems are covered?
- What happens if there is an installation problem?
- Can I get the warranty information in writing?
A written warranty is much better than a verbal promise.
Make sure you understand the difference between a material warranty and a workmanship warranty. They may cover different things.
11. Can You Provide References or Reviews?
A good contractor should be able to show examples of their work or provide customer references when available.
You can also look at online reviews and see what previous customers say about:
- Quality of work
- Communication
- Professionalism
- Cleanup
- Pricing
- Customer service
If possible, look for reviews from homeowners in the Spokane area.
Local experience can be helpful because homes and weather conditions vary from one area to another.
12. Do You Clean Up After the Job?
Insulation work can create dust and debris.
Before hiring someone, ask:
“Is cleanup included in the price?”
Find out what the crew will clean when the job is finished.
You should know whether they will remove old insulation, clean work areas, and take construction waste with them.
A professional installation should leave you with a clear understanding of what happens before, during, and after the work.
13. What Happens If You Find a Problem During Installation?
This is another useful question.
Sometimes a contractor may discover something unexpected after entering an attic or crawl space.
For example, they may find moisture damage, damaged materials, poor ventilation, or another issue.
Ask:
“If you find a problem during the job, will you stop and talk with me before doing additional work?”
You want to know about unexpected costs before they happen.
A good contractor should explain the problem and discuss your options instead of making major changes without your approval.
Red Flags to Watch for When Hiring an Insulation Contractor
Knowing what not to accept can be just as important as knowing what questions to ask.
Be careful if a contractor:
- Refuses to answer basic questions
- Cannot explain the recommended R-value
- Gives you a vague estimate
- Pressures you to sign immediately
- Cannot explain what insulation they will use
- Has no clear warranty information
- Gives a price that seems too good to be true
- Wants a large payment before work begins
- Does not inspect the area before giving a recommendation
You do not have to rush your decision.
Take time to compare contractors and make sure you understand the work.
Why Local Experience Matters in Spokane, WA
Spokane has cold winters, warm summers, and changing weather throughout the year. That makes proper home insulation important for comfort and energy efficiency.
When searching for an insulation contractor in Spokane, WA, look for a company that understands local homes and the needs of homeowners in Eastern Washington.
Therma-Lock Insulation serves Spokane, Spokane Valley, Coeur d’Alene, Post Falls, and surrounding areas. Its insulation services include attic insulation, spray foam insulation, blow-in insulation, batt insulation, and attic insulation removal and replacement.
The company also offers free attic evaluations, which can be a useful first step if you are not sure whether your insulation needs to be upgraded.
Final Checklist: Questions to Ask Before Hiring
Before choosing an insulation contractor, save this quick checklist:
- Are you licensed and insured?
- How much experience do you have?
- Have you worked on homes like mine?
- What type of insulation do you recommend?
- Why is that insulation right for my home?
- What R-value do I need?
- Will you inspect my existing insulation?
- Do you include air sealing?
- Does old insulation need to be removed?
- What is included in the estimate?
- How long will the project take?
- Do you offer a warranty?
- Can you provide references or reviews?
- Is cleanup included?
- What happens if you find a problem during the job?
Ready to Talk to an Insulation Contractor in Spokane?
Choosing an insulation contractor does not have to be difficult. The key is to ask questions before you sign a contract.
Look for a contractor who takes time to inspect your home, explains your insulation options, gives you a clear estimate, and answers your questions without pressure.
If you are looking for attic insulation, spray foam insulation, blow-in insulation, or batt insulation in Spokane, WA, Therma-Lock Insulation can help you understand your options and find an approach that fits your home.
Contact Therma-Lock Insulation to schedule an attic evaluation and learn more about your insulation options in Spokane, WA.