How to Keep Roof Insulation in Place (5 Best Methods) (2023)

How to Keep Roof Insulation in Place (5 Best Methods) (1)

Proper roof insulation is essential for keeping your home's temperature well regulated and reducing energy costs. When insulating an attic at the bottom of a roof, it can be challenging to keep the insulation in place without the proper materials and expertise.

There are many options for keeping roof insulation in place, including using metal insulation hangers, insulation netting, garden netting, wire mesh, or nylon strapping. Metal insulation brackets and nylon strapping are good affordable options, while chicken wire looks better but is more expensive.

Having many options for keeping ceiling insulation in place is great because there is a solution for almost every budget and situation. Let's take a look at all of these methods of keeping ceiling insulation in place to help you decide which one is best for you.

The best ways to keep roof insulation in place

One of the most common types of insulation used in attics under ceilings is blanket insulation. Blanket insulation is mineral wool or fiberglass blanket with a sheet of paper on one side to help hold it together.

It can be very difficult to maintain blanket insulation between ceiling joists once installed. Especially if you intend to leave your attic walls exposed, it's essential to secure the insulation in place so it doesn't fall out. Here are five of the best methods to secure your roof insulation to keep it in place.

Insulation fixing method Price range advantage Contras
Metallic Insulating Supports PS Economical, discreet and easy installation You can compress insulation.
nylon strap PS AFFORDABLE PRICES doesn't look very attractive
garden net PS Cheaper alternative to isolation grid Can be difficult to install
insulation mesh netting PS relatively easy installation Caro
chicken wire PS It looks good compared to other options. Expensive, difficult to install

1. Metal isolation brackets

Metal Insulation Brackets are super simple and highly effective for keeping battery insulation in place. They are simply pieces of stiff metal wire that you can bend slightly with a little pressure. They are usually about 12 gauge wire and about 15 ½ inches long.

You place metal insulation brackets every few feet between rafters or rafters in your attic, and they hold the blanket insulation in place. They're super cheap, easy to install, and have an incredibly low profile. If you weren't looking for them, you probably wouldn't even notice they were there.

A potential problem with using this type of fixture to support roof insulation is that it can compress the material. You want to keep the insulation as spongy as possible, as squeezing it can lower its R-value and make it less efficient at insulating your home.

To help mitigate this issue, you should install the metal insulation studs sparingly and keep them close to the outside edge of the wood stud to allow as much clearance as possible for the insulation.

Here's a quick overview on installing metal insulation brackets to keep roof insulation in place:

  • Wear gloves, goggles, mask and appropriate clothing:Working in battery isolation, or almost any isolation, can be dangerous without the right personal protective equipment (PPE).
  • Check for insulation damage:Ensure insulation is not torn, water damaged, or otherwise destroyed and replace if necessary.
  • Install a metal insulation bracket:Take a single support of metal insulation and, holding both ends of the wire, bend it slightly. Carefully position it between two insulated studs or beams and slowly loosen the ends of the wire to fit between the wood.
  • Place additional metal isolation brackets where needed:After installing your first metal insulation bracket, continue placing them between studs or studs at 12- to 18-inch intervals until all of the insulation is secure and held in place.

2. Nylon tape

Nylon strips are easy to find, effective at keeping roof insulation in place, and inexpensive. You can usually find nylon webbing at your local hardware store, but almost any similar material substitute will work just fine (sturdy rope, for example).

Simply attach the nylon strips to the attic joists using a staple gun or other fastening method. Staples, nails, screws, and hooks are all viable fastening options, so choose which one is best for your situation.

A potential downside to using nylon strapping to secure the batt insulation to the ceiling is how it looks when finished. If you leave your attic exposed, having nylon strips along the roof can be unsightly if you don't position them with the utmost care and precision.

Here's a quick update on how to install nylon strapping to support roof insulation:

  • Use appropriate personal protective equipment (PPE):Whenever working in isolation, it is best to wear gloves, a mask, safety glasses, and clothing that covers exposed skin.
  • Check for any damaged insulation:Before installing any belt, it is essential to ensure that the insulation is not damaged. Make sure there is no water damage and that the blanket insulation is well assembled and does not come apart easily.
  • Cut the nylon strips to the correct length:Nylon webbing usually comes in rolls, so measure the amount you need and cut accordingly.
  • Attach the nylon strips to the ceiling beams or beams:After cutting the strips to the correct length, use a staple gun or other fastening method to attach the nylon strips to the ceiling joists at 12- to 24-inch intervals.

How to Keep Roof Insulation in Place (5 Best Methods) (2)

3. Garden net

Garden mesh (sometimes called garden and animal mesh) is not a material you would normally think of for keeping roof insulation in place. However, it works surprisingly well and is quite affordable.

There are many types of garden netting, but they are generally very lightweight, have small holes and come in 100-foot rolls. It's very similar to mesh netting made specifically to maintain insulation (which we'll discuss below), but is generally cheaper and more accessible.

As the garden net is so light, it can be difficult to install. It's easy to get tangled up if you're not careful when you put it on. Garden netting can also stretch over time or sag if you don't install it securely.

Here's a quick overview of how to install garden netting to support roof insulation:

  • Use safety glasses, mask, gloves and other safety equipment:Fiberglass insulation is especially harmful if it comes into contact with bare skin, so it's best to wear the proper personal protective equipment (PPE) when handling insulation.
  • Make sure the insulation is in good condition:Check for signs of water damage, pests, or decay. It is essential to ensure that the roof insulation is in good condition before installing any supports to hold it.
  • Attach the garden net to the ceiling beams or beams:Using a stapler, place the end of a roll of garden netting on top of the farthest beam and unroll it to the next beam. Keeping the garden mesh taut, staple it to the second beam.
  • Install the rest of the garden netting to support the insulation:Repeat the process by holding the mesh taut and attaching it to each joist until you reach the other end of the attic. Cut the end and start over on the other side, leaving a 2-3 inch overlap between the top and bottom mesh layers.

4. Insulation mesh net

Insulated mesh netting is similar to garden netting, but with some key differences. It's much stronger, more expensive, usually comes in larger rolls, and the holes in the mesh are much smaller than garden mesh.

It's designed and manufactured specifically to hold the insulation in place, so it performs well and doesn't noticeably stretch over time. If you don't care about the appearance and cost of insulation netting, it can be a good option for keeping ceiling insulation in place.

Here's a quick overview of how to install insulating mesh netting in an attic:

  • Use the correct safety equipment:Insulation, especially fiberglass insulation, can injure you if it comes into contact with bare skin. Always use the proper Personal Protective Equipment (PPE) when installing the insulation support.
  • Check for mold or damaged insulation:Before installing insulation support, it is always best to ensure that there is no damaged or moldy insulation that needs to be replaced.
  • Attach insulation slats to joists or wooden beams:Start on one side of the attic and secure the end of the roll to the wood beam with a stapler. Carefully unroll the netting until you reach the next beam, then staple it, making sure the netting remains taut.
  • Install the rest of the mesh netting:Keep repeating the process until you reach the other end of the attic. Cut the roll and start again lower on the opposite end, leaving a 2- to 3-inch overlap of the two layers of mesh.

5. Chicken Wire

Wire mesh is a good material for keeping roof insulation in place, although it has its pros and cons. Wire mesh is quite heavy and has relatively large (compared to garden net) hexagonal holes.

It's one of the more sophisticated options for battery isolation support, and it does the job well. The look of chicken wire over exposed wood beams is very rustic and can complement the look of your attic.

The main disadvantages of using chicken wire to hold roof insulation in place are the price and potentially troublesome installation. It is often significantly more expensive than other insulation support options on this list.

Here's a quick overview of how to install chicken wire to keep roof insulation in place:

  • Use safety equipment to protect yourself from chicken wire and insulation:Wearing the correct personal protective equipment (PPE) to protect yourself from the insulation is always essential, but chicken wire can also have sharp edges that can scratch you.
  • Make sure the insulation is in good condition:Check for any water-damaged or crumbling insulation. Replace if necessary.
  • Attach the chicken wire to the first wooden or vertical beam:Using a stapler, secure one end of the coil of wire to the farthest joist on one side of the attic. Roll out the chicken wire to the next beam and secure it, making sure the wire stays taut.
  • \
  • Install the rest of the chicken wire to keep the insulation in place:Repeat the above process until you reach the other side of the attic. Cut the chicken wire at the end and start again lower on the opposite side. Be sure to leave a 2- to 3-inch overlap between the two layers of wire.

How to Keep Other Types of Roof Insulation in Place

We've discussed methods for maintaining blanket insulation in the attic in detail, but other types of insulation require different techniques. Let's look at some of the most common alternative roof insulation to blanket insulation and how to keep each one in place.

foam insulation spray
Spray foam insulation usually requires no additional support to stay in place. Once sprayed between joists or wood beams, it expands and seals the surrounding wood.

rigid insulation boards
Rigid insulated panels are strong insulated panels that can usually be installed with screws or nails. When properly installed, rigid insulation panels should not require any additional support to stay in place between studs or wood beams.

structural insulation panels
Structural Insulation Panels (SIPs), which are insulated by two pieces of plywood or oriented wire panel, generally do not need additional support after installation. Unlike the other insulation options on this list, SIPs are a structural part of the home.

loose fill insulation
Loose insulation is very thin and people usually install it with a specialized machine. It is best to use specialized insulation mesh netting to keep the loose fill insulation in place. Loose-fill insulation requires mesh of some sort, and chicken wire and garden netting have holes that are too large to contain it properly.

final thoughts

Battery insulation is one of the most common types of insulation you'll find in most homes. There are many options to choose from when it comes to keeping it in place, and it's hard to go wrong with any of the five methods mentioned in this article.

How you decide to maintain roof insulation largely depends on your skill set, budget, and personal preference.

If your roof has an alternative type of insulation other than blanket insulation, we've covered how to keep most types in place. Loose insulation is one of the only other types of roof insulation that requires support; all other common alternatives require nothing additional to stay in place.


How do you keep roof insulation in place? ›

Used spray adhesive on the insulation and just pressed it up and it stayed. Held it in place long enough to get the underlayer of sheet insulation on.

What can I use to hold insulation in place? ›

There are many options for keeping roof insulation in place, including using metal insulation supports, insulation netting, garden netting, chicken wire, or nylon straps. Metal insulation supports and nylon straps are good affordable options, while chicken wire looks nicer but is more expensive.

How do you secure insulation? ›

Gently tuck the insulation into the cavities between wall studs. Pay special attention to the corners and edges. The insulation should fit snugly in the cavity and leave no gaps. Make sure the vapor retarder on faced insulation is facing the conditioned interior space unless building codes specify otherwise.

What is the best form of roof insulation? ›

Glass wool is a material that is frequently used for this job, as it offers good thermal and sound insulation. Roof insulation boards are popular as well. These can be installed quickly, but the sound insulation is not as good as in the case of glass wool for example.

How do you keep heat from escaping on the roof? ›

For roofs, the easiest way to prevent heat loss is through insulation of the ceiling in the loft cavity. It is important to put adequate insulation in the loft or ceiling and to ensure that no gaps are left, especially around hatches, electrical and pipework.

What does insulation stop from escaping? ›

Insulating is the process of covering something to stop heat from escaping, as well as sound and electricity.

Can I use duct tape to hold insulation? ›

No it is not an appropriate use. Duck tape isn't even good enough for ducts. It is not UL tested or approved nor manufactured for any electrical use.

How do you staple insulation in a ceiling? ›

Stuff the batt into the bay and with the paper side facing the room. Push it in as far as it will go and staple the sides of the paper to the insides of joists – not to the joist faces. Avoid compressing the insulation when you do this. Drive the staples at 6- to 8-inch intervals with a staple gun.

Can you handle insulation with bare hands? ›

If you've ever touched fiberglass insulation with your bare hands, you're probably well aware of its effect on the skin. In most situations, touching the material without proper protection will result in a sharp stinging, burning and itching sensation.

How do you insulate a roof with no access? ›

Spray foam insulation is a top option to handle the problem of small spaces, like those in an inaccessible loft. It can also handle other small spaces, like the gap between cavity walls, the space under suspended floors, and the void in crawlspaces.

What is the safest roof insulation? ›

Glasswool and rockwool insulation products are not hazardous products and are safe to install and use in your home or in other insulation applications for the life of the building.

Can you put insulation directly against roof? ›

Putting insulation directly against your roof is ill-advised. There needs to be a gap between the insulation and the membrane, which serves as an additional waterproofing layer under the slates or tiles.

Should there be an air gap between insulation and roof? ›

Depending on the specifics of the roof, it may be possible to fully fill the rafter depth or, in most cases, leave a 25mm or 50mm air gap between the top face of the insulation and the sarking membrane.

What are 5 ways in which you can protect your home from escaping heat or from too much heat coming in during the summer? ›

Protecting your home from extreme heat
  • Insulate your attic. ...
  • Install an attic door cover. ...
  • Caulk windows and doors. ...
  • Install a programmable thermostat. ...
  • Consider a multi-stage air conditioner.
10 Jun 2013

How do you keep a poorly insulated house warm? ›

Apply Foil To The Wall Behind Your Radiators

Poorly insulated walls give the heat a fast escape route from your house. A way to combat this is to use foil behind the radiators. This will reflect the heat from the radiator back into the room instead of allowing it to escape through the walls.

Where is most energy lost in a house? ›

6 Areas Of Your Home Where You Lose The Most Heat
  1. Basement Walls and Floors. 20% of home heat is lost through basement walls. ...
  2. Cracks in Walls, Windows and Doors. ...
  3. Poorly Insulated Windows. ...
  4. Framed Walls. ...
  5. Ceilings. ...
  6. Exterior Doors.

What are the most effective insulation methods? ›

There are many cost-effective thermal insulation materials available on the market today.
7 Most Common Thermal Insulation Materials
  • Glasswool Insulation. ...
  • Earthwool Insulation. ...
  • Polyester Insulation. ...
  • Rockwool Insulation. ...
  • Reflective Foil Insulation. ...
  • Insulation rigid boards (EPS & XPS) ...
  • Spray Foam Insulation.
28 Aug 2019

What is the most important part of a house to insulate? ›

Attic. Arguably the most important space in the home to insulate is the attic. This is primarily because heat naturally rises, which means that the attic will hold a lot of the heat generated in the home. During the winter, having that heat escape through the attic will push up energy bills.

What is the main reason for insulation failure? ›

Causes of Insulation Failure

Stressors like temperature, pollutants, and electrical stresses such as sustained overvoltages can easily tax electrical insulation and cause breakdowns. The risk of insulation failure also increases with time as these various factors interact with each other to cause deterioration.

Which is better duck tape or Gorilla Tape? ›

The first, and arguably most important difference between these two tapes is that Gorilla Tape tends to stick a lot firmer and a lot longer than traditional duct tape. That's because of the thicker adhesive used in its manufacturing process.

What tape should I use for insulation? ›

One of the best options for insulation seam tape is aluminum foil tape. This type of tape has a rubber-based coat and strong adhesive. Aluminum foil tape adhesive works great on uneven surfaces and textures. Foil tape also is a good shield for thermal insulation.

Is there such a thing as insulation tape? ›

Electrical tape (or insulating tape) is a type of pressure-sensitive tape used to insulate electrical wires and other materials that conduct electricity.

How do you install insulation without itching? ›

In addition to a long sleeved shirt, long pants, gloves, dust mask and eye goggles rub your hands and arms with baby powder or corn starch before working with fiberglass insulation. The powder keeps much of the fiberglass from sticking to your skin causing it to itch.

What kind of stapler for insulation? ›

Insulation tackers use outward clinching staples which are ideal for use on facings that have fiberglass underneath. Outward Clinch tacker staples are ideal for stapling fiberglass duct wrap, fiberglass FRK/ASJ board facings and ASJ Jacket on fiberglass pipe insulation.

What happens if insulation touches you? ›

While touching fiberglass doesn't usually lead to long-term effects on your health, exposure to it may cause intense itching, redness, or a rash. So, it's important to remove fiberglass from your skin as soon as possible so it doesn't come in contact with your eyes, nose, or throat.

Can you use jeans as insulation? ›

It contains no formaldehyde, and it doesn't have tiny, itchy fibers to irritate your skin and lungs, like fiberglass does. Denim insulation can be twice as expensive as fiberglass, but it's an easy and non-toxic DIY project, saving you money on a contractor.

What does insulation do if you touch it? ›

The most common health risk of fiberglass insulation is skin irritation. This occurs when your skin gets in contact with fiberglass particles, resulting in itchiness and skin rashes. Particles may come in contact with your skin and trigger allergies, especially if you have sensitive skin.

Is it better to insulate the roof from inside or outside? ›

Flat roofs are best to insulate on the outside of the roof, which prevents heat loss and reduces energy consumption. By applying insulating material on top of the roof structure, you avoid the risk of moisture damage in the wooden structure. With interior insulation, this risk is greater for flat roofs.

How do you insulate a roof with sun heat? ›

A layer of 40 mm gravel (railway jelly) laid on the roof can effectively prevent the roof from getting heated. The gravel shades the roof by day. The polygonal surface of the gravel makes minimal contact with the roof. This prevents heat transfer.

What can I put on my roof to reflect heat? ›

It's best to choose a lighter colored shingle to further reflect light and heat. Clay tiles are excellent in hot climates because they allow for small airflow between the tiles. Last painted metal roofs are also a great choice for reflecting light.

What are the 3 types of insulation? ›

The most common types of materials used for loose-fill insulation include cellulose, fiberglass, and mineral (rock or slag) wool. All of these materials are produced using recycled waste materials. Cellulose is primarily made from recycled newsprint. Most fiberglass products contain 40% to 60% recycled glass.

How thick should roof insulation be? ›

When insulating one, you're aiming for a value of 0.25 W/m2K or less. To achieve this, you should insulate your flat roof with insulation boards totalling around 150mm thickness.

Does roof insulation help with heat? ›

Once you get control of the attic temperature, insulation keeps rooms at a consistent temperature. It keeps the cooler air down where you want it in the summer and keeps heat from escaping in the winter. It's essential to ensure that your insulation levels are appropriate throughout the house.

Can you put insulation directly on the roof? ›

Experts usually advise builders that you can't install fiberglass insulation directly against the underside of roof sheathing.

Should insulation touch the roof? ›

The airflow from the soffits to the ridge vent keeps the roof cool and prevents ice dams, and the material will block that flow. For the same reason, insulation shouldn't touch the roof's underside. Staple plastic or foam baffles to the roof sheathing, near the eaves, to keep the material away.

Do you need to leave a gap between roof and insulation? ›

Depending on the specifics of the roof, it may be possible to fully fill the rafter depth or, in most cases, leave a 25mm or 50mm air gap between the top face of the insulation and the sarking membrane.

Should I staple my insulation? ›

Use enough staples to hold the insulation firmly in place (about every 8") and avoid gaps and “fishmouths” between the flanges and framing.

Do you need an air gap for insulation? ›

You MUST have an air gap in order to get either the emissivity quality or the reflectivity quality that you're looking for, otherwise the foil will not work as a radiant barrier.

How do you tell if a roof is properly insulated? ›

While you're at it, feel the ceiling and see if it seems strangely hot or cold in any area. If any rooms have odd temperature changes, there's a good chance that the insulation in that area is poor and will need to be replaced.

Can insulation touch underside of roof? ›

However, you need to leave an air gap of 20mm between the insulation and your roof. Standard R3. 5 ceiling insulation batts are 185mm thick, so depending on the roof pitch the batts may touch the underside of your roof at the edges of your ceiling.

What depth should roof insulation be? ›

Current government recommendations are for loft insulation to achieve a depth of between 250mm and 270mm but some new properties are increasing their level of loft insulation to 300mm.

Should loft insulation go to the edges? ›

For ventilation, leave a gap of at least 25mm around the edge of the loft. Do not lay the insulation all the way up to the eaves. If your boiler flue goes through the loft, leave a gap around this as well.

How much space should be between roof and insulation? ›

When you use solid insulation board to create a warm loft the key thing to remember is ventilation – you must keep a 50mm gap between the roof and the rigid insulation board. We would always recommend having a breathable membrane in place between the tiles and the rafters too to allow the roof to breathe.


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