Should I remove old attic insulation before adding new?

• <div><p>Ideally, you can add new insulation to your existing insulation. However, some circumstances require you to remove old insulation before adding any new insulation: </p><ul><li><p>If the insulation is over 15 years old</p></li><li><p>If the insulation is wet or moldy</p></li><li><p>If it is <a href="https://www.angi.com/articles/what-is-vermiculite-insulation.htm">vermiculite insulation</a></p></li><li><p>If you see signs of pest infestation</p></li></ul><p>Removing old insulation is best left to a pro who can safely dispose of potential moldy or asbestos-ridden insulation.</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 27, 2026

Reviewed in January 2026
Couldn’t be happier with our mini split installation. Everything was done neatly, on time, and the system runs great. Thank you!
EICHLER HEATING AND AIR CONDITIONING
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Reviewed in June 2025
We hired GVD Renovations to install James Hardie siding on our main house (2400 ft.²), an ADU, and detached two car garage. The job also included replacing 31 windows, three sliding glass doors and two entry doors. The crew did an excellent job, very efficient with a good eye for detail, clean...
GVD Renovations
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Reviewed in March 2025
On-time and professional, neat, and organized install. I would recommend.
AMP-A-NEER
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Reviewed in January 2025
Manny is the best at what he does. I initially hired him to install a smart TV wall box, and I couldn’t have been more pleased. He was incredibly polite, professional, and communicative, keeping me updated every step of the way via text and messages. The payment process was smooth with Venmo,...
Hernandez AV Hookup
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Reviewed in May 2024
I worked with Electrical Detectives to upgrade a 45-year-old panel, install pendant lights, upgrade some outlets to GFCI, and replace some existing ceiling fixtures. From estimate to job completion, Jason and his associate Phillip were a pleasure to work with. I was informed each step of the...
Electrical Detectives Inc.
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Reviewed in September 2023
Chris took an old run down outbuilding and turned it into a beautiful art studio for me. He removed old windows and put in new ones. Moved the location of the old door, and Installed nice French doors. Repaired all the damage to the outside. Insulated and installed sheet rock. Put in a tongue...
Aldridge Master Builders
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Reviewed in August 2023
The installer is the owner of the company and she is the most knowledgeable professional of her craft of wallcovering installation -which is an art in itself and requires years to perfect. There are not many wallpaper installers around today who can hang ordinary papers to the very expensive...
Sundance Decorating
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Reviewed in May 2023
We are 100% satisfied with the new windows we had installed by Window Nation. The crew showed up on time and we’re able to replace all the windows in our house (25 of them) and clean up the work site in the same day. The windows look great and are high quality and excellently installed. I would...
Window Nation Pittsburgh
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Reviewed in August 2022
Installed irrigation and it works!
Brodie Castle Landcare
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Reviewed in January 2022
Jeff Wuest/Low Rate Electric is our choice for all of our house renovation work- we have a 1913 farmhouse with ancient electrical, and he has worked wonders to install new switches, wiring, circuits, and panel connections, as well as installing new boxes and light fixtures- all with minimal...
Low Rates Electric
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Top-Rated Doorbell installation pros in Bodega Bay - Updated Nov 2026

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Doorbell Installation FAQs, answered by experts

Yes, including recycled denim and cellulose from natural fibers.

Insulation can be easy to install, depending on the condition of your walls, but there are many safety considerations and potential challenges involved. For example, most types of insulation are made from materials that can cause irritation if inhaled or if they come into contact with your skin. Additionally, installing insulation incorrectly can actually make moisture issues in your home worse.

When installing board and batten siding, make sure there is wall sheathing and a moisture-resistant barrier installed. Behind that sheathing should be plywood or OSB for you to nail the boards and battens into. If there isn’t plywood or OSB, you can install vertical furring strips at 1½- to 2-foot intervals to nail the boards and battens to.

Ideally, you can add new insulation to your existing insulation. However, some circumstances require you to remove old insulation before adding any new insulation:

If the insulation is over 15 years old
If the insulation is wet or moldy
If it is vermiculite insulation
If you see signs of pest infestation

Removing old insulation is best left to a pro who can safely dispose of potential moldy or asbestos-ridden insulation.

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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