ATTIC Air Duct Sealing and Repair Services

Schedule Your FREE Attic Heat Duct Sealing and Repair Estimate With Insulation Co. Today!

expert attic HEAT duct sealing and repair services

If you have ducts located in an unconditioned attic, it’s important to be aware that duct leakage can cause significant issues. Unbalanced duct leaking can be even worse, and in such cases, large amounts of mastic are often used to seal the ducts. If you discover significant leaks in your ductwork, it’s time to take action and seal all the duct seams. This is a highly effective way to improve the efficiency of your home’s duct system, according to

premium attic duct sealing and repair

If your home’s HVAC system has ducts located in an unconditioned attic, it is important to be aware of the potential issues that can arise from duct leakage. In such a situation, the ducts are exposed to extreme temperatures in the attic, which can cause the ducts to expand and contract, leading to cracks and gaps in the ductwork. These cracks and gaps can result in significant air leakage, causing your HVAC system to work harder to maintain the desired temperature, leading to higher energy bills and reduced comfort. Heat duct sealing is one of the best ways to increase in-home duct efficiency. Unbalanced duct leaking can occur when the return ducts leak more than the supply ducts, causing negative pressure within the home. This can result in the infiltration of outdoor air, which can affect indoor air quality and lead to health problems. One of the most effective ways to do this is to use mastic, a thick adhesive that can be applied to the duct seams using a brush or spray gun. Mastic is highly effective at sealing duct seams, and it can significantly improve the efficiency of your home’s duct system. In addition to reducing energy bills and improving comfort, duct sealing can also improve indoor air quality by reducing the infiltration of outdoor air and pollutants.

6 signs your ductwork needs to be sealed

clogged air filters

Frequent clogging in air filters can indicate that ducts are pulling in and circulating more debris and dust which could be due to leaks. 

spiking energy bills

If your energy bills seem to suddenly rise without a corresponding increase in HVAC usage, it could be a sign you have leaky ducts. 

older duct system

Heat ducts that are over 15 years old is more likely to have leaks simply due to wear and tear over time. 

uneven room temperatures

If some rooms are colder or hotter than others despite your running HVAC system, this is often a sign of leaky ductwork. 

duct issues

Excess dust that is accumulating throughout the home may indicate air ducts are leaking and pulling in dust from unfiltered areas. 

damaged ductwork

If the heat ducts visibly appear in bad shape, with cracks or holes, it is a clear sign that it needs sealing. Gaps between the joists in your ductwork are prime areas for air to escape, reducing system efficiency. 

Steps To Sealing Attic Air Ducts

1. inspection

The first step is to inspect the ductwork to identify any leaks or damage. This can be done visually.

2. preparation

Before sealing the ducts, it is important to clean them thoroughly to remove any debris or contaminants that could interfere with the sealing process. This may involve using a vacuum cleaner or compressed air.

3. sealing

The next step is to seal the ducts using a suitable material such as mastic or duct tape. Mastic is a thick adhesive that is applied to the seams of the ducts using a brush or spray gun

4. repair

If any sections of the ductwork are damaged or corroded, they may need to be repaired or replaced. This may involve cutting out the damaged section and installing a new piece of ductwork.

Frequently Asked Questions About Attic heat duct sealing and repair

Duct sealing is the process of identifying and sealing any leaks, cracks, or holes in ductwork. It enhances the performance of your HVAC system and the quality of air inside your home. The main goal is to ensure that conditioned air, whether heated in the winter or cooled in the summer, flows directly to its intended destination without any leaks, loss, or contamination. If you don’t seal your ductwork, you will risk reducing the overall lifespan of your HVAC system, as it will have to work harder to maintain your home’s temperature. 

Duct cleaning removes debris and contaminants from your air ducts, while duct sealing closes the gaps and leaks to improve airflow and energy efficiency. 

Properly sealed ducts can result in up to around 20% energy savings.  

why work with us?

over 25 years experience

Serving Seattle for 25+ years with expertise and professionalism. Our experienced team, led by founder Jo, has been dedicated to delivering quality craftsmanship and friendly customer service to all his customers for almost two decades.

10-year warranty on insulation workmanship

All of our work is backed by a 10-year transferable warranty on insulation workmanship and a 2-year transferable warranty on mold remediation, sump pump, and French drain install workmanship (if applicable to the bid scope of work). Included in our warranty is one free complimentary courtesy check.

insured, bonded, and licensed

Providing licensed, bonded, and insured services for your insulation needs. Trust our expertise and commitment to quality work. It is important to choose a contractor who is licensed, bonded, and insured because this ensures we know how to do our job properly and can protect ourselves against any potential mistakes.

owner run company

Owning a business can be tough, but also incredibly rewarding. Experience the advantage of talking directly to the owner of our business, Jo, who started installing insulation at the young age of 10. Jo, the founder of the company, has firsthand experience in the insulation industry since childhood.

5 star customer reviews

Experience a customer-focused company that prioritizes your wants and needs. Customer interactions are our primary means of creating true customer relationships and building our brand.

free same-day estimates

Providing customers with fast, free, virtual, and same-day quotes will give you a starting point for your home improvement project.

duct sealing

Get a Free Quote