Should you remove old insulation before adding new insulation?

• <div><p>You do not always need to remove old insulation before adding new. If the existing insulation is in good condition—not wet, physically damaged, moldy, or infested with pests—you can add new insulation directly on top of it for a compounding effect. You can also mix different types, such as adding blown-in insulation around existing fiberglass batts.</p><p>However, removal is recommended if the old insulation is compromised by water damage or pests. You should also remove it if you plan to install a different type of insulation, like switching from roll or batt insulation to spray foam. If the existing insulation is very old or damaged, you will likely get more benefit from removing it and starting fresh.</p></div>

Does insulating windows with plastic work?

• <div><p>Insulating windows with plastic works, but it can be time-consuming, and the end results can—and often do—end up lacking in aesthetics. Window film and <a href="https://www.angi.com/articles/how-to-caulk-windows.htm">caulking your windows</a> to make sure there are no drafts are two options that increase the energy efficiency of your home in a low-cost way. Plastic can be a good strategy while you consider alternatives.</p></div>

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Last update on January 03, 2024

Reviewed in January 2024
Contractor was professional and easy to work with. He did everything I asked him to do and I ended up with my dream kitchen. The kitchen area was cleaned up every day when they were done working and I was still able to use the sink and appliances at the end of the day. I highly recommend his...
Next Level Building and Remodel
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Reviewed in January 2024
Wendell is a master craftsman. Some of the finest work that you will ever have done. I highly recommend him if you need a qualified and honest contractor. He is beyond reproach. You will not be disappointed!
RWP Construction, LLC
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Reviewed in May 2023
Arrived promptly on time. Did a great job and cleaned up when they were done.
GarriGutters
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Reviewed in March 2021
Needed it done the next day. They made sure of it.
Paladin Home Inspection Services
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Reviewed in July 2020
Outstanding. From the first call Jason has been nothing but professional. Our metal roof was installed on time. And looks beautiful. No mess afterwards. Best contractor we have ever hired. Will be using him for other projects at our cabin.
Jason Ives Construction
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Reviewed in May 2020
Complete Exteriors recently replaced the shingles on my townhouse in Gaithersburg, MD. I also hired them to replace our gutters and downspouts. The roof shingles are CertainTeed Landmark Pro architectural shingles and they look great. The Complete Exteriors crew arrived around 7 A.M. and...
Complete Exteriors, LLC
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Reviewed in February 2016
They came and pick up my UTV and took it to their shop and went over the whole unit and replace what needed replace. They fix the gear shifter that another company broke and replace the choke that the other company said they replace as well the clutch that the other company said they replace and...
CARNS EQUIPMENT LLC
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Reviewed in March 2014
They took the roof off the existing garage, set down new floor, built outside walls, strengthened garage to hold addition, shingled roof and sided. They installed new windows and as per our agreement, we are finishing the inside work. The work is top class and his workers were professional and...
Daryls Home improvement
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Reviewed in January 2014
We called Ray Peffer at Textbook Plumbing after hearing a couple good reports about him from friends. <br /> Our enclosed corner shower needed to be replaced so we asked Ray for an estimate. The estimate came in at about $2,300.00. The price seemed reasonable enough for the job. <br /> The...
Textbook Plumbing and Heating
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Reviewed in April 2013
Payne's was the lowest bid we could get. I argued that he was over $3000. too much but we had to have it done and allowed him to do it. <br /> I told him I would monitor his time and multiply the same by his rate (which he gave me) Well it was $2,000 over one the main roof and <br /> $700. for...
payne and sons contracting
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Doorbell Installation questions, answered by experts

You do not always need to remove old insulation before adding new. If the existing insulation is in good condition—not wet, physically damaged, moldy, or infested with pests—you can add new insulation directly on top of it for a compounding effect. You can also mix different types, such as adding blown-in insulation around existing fiberglass batts.

However, removal is recommended if the old insulation is compromised by water damage or pests. You should also remove it if you plan to install a different type of insulation, like switching from roll or batt insulation to spray foam. If the existing insulation is very old or damaged, you will likely get more benefit from removing it and starting fresh.

Open-cell foam insulation has a life span ranging between 15 to 25 years when well cared for. However, the material may degrade sooner in areas with high humidity or after prolonged water exposure. Proper installation and maintenance can maximize its longevity but requires close monitoring. Closed-cell foam insulation has a longer life span of 30 to 50 years.

Costs depend on area size, material thickness, and site preparation needs.

Ductwork should be wrapped in insulation in certain locations. This includes unconditioned interior parts of the home, such as attics, crawl spaces, basement ceilings, and between floors. Duct joints should also be insulated since they're more likely to leak air than other parts of your system. Building codes in some areas also require ductwork to be insulated.

Insulating windows with plastic works, but it can be time-consuming, and the end results can—and often do—end up lacking in aesthetics. Window film and caulking your windows to make sure there are no drafts are two options that increase the energy efficiency of your home in a low-cost way. Plastic can be a good strategy while you consider alternatives.

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