Yes, you can install insulation without a standalone plastic vapor barrier in many situations. Depending on your climate, local building codes, and the material you use, you can often rely on "kraft-faced" insulation (which has an attached vapor retarder) or completely unfaced insulation.
Building codes require a vapor barrier on the interior or exterior of the insulation based on climate zones. Building scientists recommend applying vapor barriers with insulation to enhance your building or home's indoor environmental quality and energy efficiency.
“Without a vapor barrier, concrete deteriorates much faster through water vapor intrusion, which degrades the quality of the concrete over time and can lead to foundation and building failures — like the Surfside Condominium Collapse in Miami, Florida,” says vapor barrier plastic sheeting expert and Americover account ...
Unfaced insulation is great for new construction, remodels, walls, floors, ceilings, basements, attics and crawlspaces. It's best used for interior wall applications that do not face the outside and also in rooms that don't need moisture control, like living rooms, dining rooms and studies.
While you can physically touch fiberglass insulation with bare hands, you should never do it intentionally. Fiberglass is made of spun glass fibers that break off easily. Touching them causes microscopic glass shards to embed themselves in your skin, leading to severe, irritating itching, and sometimes a rash.
Yes, your lungs can get rid of fiberglass, but how effectively they do it depends on the size of the fibers and where they end up in your respiratory tract.
Because spray foam can trap moisture, hide the condition of the roof, make it difficult for surveyors to inspect, which means risks like timber decay, dry rot, and not forgetting increased fire risk. If you've got it or you're buying a property that does, this is something you need to know upfront.
Mice are curious and always searching for safe, snug, and warm nesting sites. Attics filled with blown-in insulation provide an excellent option–from the mice's point of view. As long as there is a ready food source. Mice are omnivorous and will eat and chew on almost anything including wood and electrical wires.
What time of year is Insulation cheapest?
using unfaced batts or rolls, allow friction to hold the insulation in place (called “friction fit method”). If a polyethylene vapor retarder is used, staple it across the unfaced batts. Check to make sure there are no openings where moisture can escape.
Interior walls are frequently left uninsulated during construction because the energy efficiency benefits aren't as great as insulating exterior walls, floors and ceilings.
Yes, mold can absolutely grow under a vapor barrier. While vapor barriers are designed to block moisture, any moisture that gets trapped beneath the barrier—due to a plumbing leak, groundwater seepage, or poor installation—will create a prime environment for mold to grow, out of sight.
No, standard Tyvek cannot be used as a traditional vapor barrier. Tyvek is a housewrap designed as an air and moisture barrier. It keeps bulk water out but is highly vapor-permeable, allowing moisture to escape the wall to prevent rot and mold.
Yes, foam board is a highly effective and versatile type of insulation. Also known as rigid foam, it provides excellent thermal resistance and is commonly used in walls, basements, roofs, and under concrete floors.
Yes, mice can easily chew through foam insulation. Because mice have strong, continuously growing teeth, they will chew through soft materials like foam to create tunnels, sharpen their teeth, or gain access to a warm space.
If you use faced insulation and staple the flanges to the studs, you do not need a vapor barrier. The vapor barrier is used when you use un-faced batts (without the paper). Insulation is best installed before you move into the shop and start placing tools, cabinets, etc on the walls.
While it may appear harmless to the naked eye, it actually contains thousands upon thousands of small shards of glass and sand that can make their way onto your skin, eyes or even inside your lungs. If you've ever touched fiberglass insulation with your bare hands, you're probably well aware of its effect on the skin.
It's recommended to leave an air gap insulation of at least 25mm or 1 inch for the walls and ceilings. This should be enough to allow for ventilation and prevent moisture buildup. The same rule may be applied when using foil insulation. On roofs, the air gap should be larger, typically around 50mm or 2 inches.
When balancing upfront cost and overall thermal efficiency, the cheapest and most effective standard insulation is fiberglass batt insulation. However, if you are looking for long-term savings through superior air sealing, dense-pack cellulose often provides the best overall value.
Home insulation doesn't have an “expiration date,” and the material doesn't “go bad” after a certain number of years have passed. Ultimately, the condition of the insulation and its performance are more important factors than age when deciding whether to upgrade or replace insulation.
The Amish control mice through non-chemical, self-sustaining methods, relying on active trapping, natural scent repellents, and structural exclusion. Rather than using commercial poisons, they focus on physical barriers and natural predators to keep rodent populations in check.
Potential problems with spray foam insulation
reduce air circulation and ventilation within a roof space. lead to dampness and condensation on the underside of a roof because it forms an air barrier and stops moisture from escaping. place timber-framed roofs at risk of decay.
Closed-cell spray foam and rigid foam board are hard, unattractive to rodents, and double as air barriers. Mineral wool is dense enough to discourage nesting. Fiberglass batts, especially in crawl spaces and attics, are essentially an open invitation.