Inspect your attic insulation every 1 to 3 years. Generally, insulation only needs to be fully replaced every 15 to 30 years depending on the material, or when it is damaged by water or pests. You can frequently just "top off" existing insulation if it has simply settled over time.
Look for the following common signs:
Insulating a 2,000 sq. ft. attic costs between $2,000 and $9,000, with most homeowners paying around $3,600 to $5,800 for professional installation. The wide price range depends on the type of insulation, labor rates, and whether old insulation requires removal.
Attic insulation 30 years old or more, should be replaced.
After 30 years, loose-fill and blanket type attic insulation products have dramatically settled and lost much of its effectiveness. Settling reduces the R-value, which means heat will flow more easily in and out of your house.
Should I remove old loft insulation before laying new? Older insulation material will typically need to be removed before adding new insulation. However, in some cases the material may be in good condition, meaning you can simply top up the existing insulation material for a fraction of the cost of a full replacement.
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.
Installing new insulation over old is a viable option for keeping your home warm in the winter and cool in the summer. However, the current insulation must be in good condition. It's vital that a professional insulation technician inspect your current insulation before adding another layer.
The 7 and 7 rule for attic conversions refers to the common requirement that finished attics be at least 7 feet wide and 70 square feet, with 7-foot ceilings over at least half. Keep in mind that this is a general guideline. Local building codes may have stricter requirements that supersede this rule.
To tell if attic insulation is bad, look for visible signs of damage, insufficient depth, or household discomfort. Key indicators include high energy bills, drafts, and uneven room temperatures. In the attic itself, check for mold, compressed or wet material, pest infestations, and exposed ceiling joists.
We use a product called DSV for this important step. DSV is a Disinfectant, Sanitizer, and Virucide. When sprayed or fogged in your attic, it kills the odors left behind from the urine, feces, and afterbirth of rats, mice, squirrels, and bats.
For most attics, blown insulation is better than rolled insulation. Blown-in is ideal for older homes or attics with irregular framing, as the machine-blown material conforms tightly around pipes, wires, and joists. Rolled insulation is better for brand-new, empty attics with no obstructions.
Choosing the best time to insulate your home largely depends on your circumstances and needs. However, it's generally recommended to install insulation during the spring or early summer months. This timing allows you to prepare your home for the extreme temperature swings of summer and winter.
Attic insulation installation ranges from $1.50 sq/ft. to $2.45 sq/ft. The average cost of attic insulation installation is $1.80 sq/ft.
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.
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.
Replacing attic insulation typically takes 3 to 12 hours for a standard home, depending on the job's complexity. Most basic installations are completed within a single day.
What Not to Store in Your Attic
The most common animals in attics are mice, rats, squirrels, and raccoons. Narrow down your unwelcome guest by listening to when the noise happens and what it sounds like:
It's going to get everywhere and make an even bigger mess, so you will need to get a vacuum to remove insulation from the attic. We use a 1,500-horsepower shop vac when we do the removal, and in most cases, hook that to a second attic insulation removal vacuum to get the suction we need.
Poor insulation forces your HVAC to work overtime, resulting in skyrocketing energy bills, uneven room temperatures, and drafty areas. Look for warning signs like cold walls, frozen pipes, and frequent condensation or mold growth, which indicate moisture is collecting on uninsulated surfaces.
In most cases, you do not need to remove old insulation before adding new insulation. Laying new batting or blown-in insulation directly over existing material is often the most cost-effective way to boost your attic's energy efficiency, provided the old insulation is in good condition.
In most cases, mice are nocturnal, which means they usually remain in their nest during the day. A mouse can venture out at night to search for food. If a mouse has been disturbed and feels uncertain or threatened, it may move out of the attic during the day.
You will MOST LIKELY need a building permit if your attic remodel involves: Creating a “habitable space”: Converting an unfinished attic into a bedroom, office, playroom, or any other living area almost always requires a permit.
The 10-year rule for loft conversions provides protection against enforcement action. This means that, if ten years pass without challenge, the local council can no longer require you to reverse a conversion that was built without planning permission.