Batt insulation — sometimes called blanket insulation — consists of flexible panels of insulating material pre-cut to standard widths (typically 16" or 24" to match standard stud spacing) and a range of thicknesses that correspond to different R-values. Batts are designed to fit snugly between framing members in walls, floors, ceilings, and attic rafters, creating a thermal barrier that slows the transfer of heat between the inside and outside of your home.

Batt insulation is the go-to choice for new construction, major renovations, and any project where wall cavities or floor bays are exposed and accessible. When installed correctly — with no gaps, compressions, or voids — batts deliver excellent thermal performance at a highly competitive cost per square foot, making them one of the best value insulation options available to Ontario homeowners.

Constant Home Comfort installs the two most trusted batt insulation materials used in Ontario residential construction. During your in-home consultation, our team assesses your project, your R-value targets, and your budget — and recommends the product that delivers the best performance for your specific application.

Fiberglass Batt Insulation

Fiberglass batts are the most commonly installed insulation type in Ontario and across Canada. Made from spun glass fibres bound together with a resin binder, fiberglass batts are non-combustible, moisture-resistant, and dimensionally stable over the long term. They are available in a wide range of R-values — from R-8 for shallow cavities to R-31 and above for thicker applications — and come with or without a kraft paper or foil vapour barrier facing depending on where they're being installed. Fiberglass batts are cost-effective, readily available, and perform reliably in walls, attics, and floors throughout Ontario's varied climate.

Mineral Wool (Rock Wool / Stone Wool) Batt Insulation

Mineral wool batts — also known as rock wool or stone wool — are manufactured from natural rock or industrial slag spun into dense, semi-rigid panels. Compared to fiberglass, mineral wool offers superior fire resistance (it does not melt or contribute to flame spread), better sound attenuation, improved moisture management, and a slightly higher R-value per inch (approximately R-3.0 to R-4.2 per inch). Mineral wool batts are an excellent choice for party walls, fire-separation assemblies, basement walls, around mechanical rooms, and any application where sound control or fire performance is a priority alongside thermal insulation. Their density also means they hold their shape and fill cavities more completely than fiberglass in some applications.

Batt insulation is highly versatile and suited to almost every framed cavity in a home. Our technicians install batts in the following locations:

• Exterior walls — the primary thermal barrier between your living space and the outdoors; correct R-value and vapour barrier placement is critical
• Interior walls — for sound isolation between rooms, home offices, bedrooms, and mechanical areas
• Attic floors — between ceiling joists to prevent heat from escaping through the top of your home (often topped with blow-in insulation to reach R-60)
• Attic rafters and cathedral ceilings — in applications where insulation needs to follow the slope of the roof rather than the flat ceiling plane
• Basement walls — between wood furring or stud walls built against the foundation, often in combination with rigid foam insulation
• Basement rim joists and header areas — a critical air and thermal sealing location in most Ontario homes
• Floor assemblies over unheated spaces — crawl spaces, garages, and cantilevers where the floor is the building envelope boundary
• Mechanical room and utility area walls — to improve energy efficiency and reduce noise from HVAC equipment

R-value is the measure of an insulation material's resistance to heat flow — the higher the R-value, the better the thermal protection. Ontario's building code sets minimum R-value requirements for different parts of a home, and many older homes fall significantly short of these standards. Here are the current Ontario building code minimums for reference:

• Attic / ceilings below unheated spaces: minimum R-60 (many pre-2010 homes sit at R-10 to R-32)
• Exterior walls (above grade): minimum R-22 to R-24 depending on climate zone
• Basement walls: minimum R-17 to R-20 depending on application
• Floors over unheated spaces: minimum R-31

Our team measures your existing insulation levels during the pre-installation assessment and specifies exactly which batt product and thickness will meet or exceed code for each application in your home. We never upsell insulation you don't need — and we never cut corners on what you do.

Whether you're building new or upgrading an existing home, properly installed batt insulation delivers a combination of performance, durability, and value that makes it one of the most practical insulation choices available:

• Proven thermal performance — fiberglass and mineral wool batts deliver consistent, well-documented R-values that meet or exceed Ontario building code requirements
• Lower energy bills — a properly insulated and air-sealed building envelope means your furnace and air conditioner work less to maintain comfortable temperatures, reducing your monthly utility costs
• Improved indoor comfort — eliminates cold walls, drafts, and temperature swings that make rooms uncomfortable in winter and summer
• Sound control — particularly mineral wool batts, which significantly reduce airborne noise transmission between rooms and between floors
• Fire resistance — both fiberglass and mineral wool are non-combustible; mineral wool in particular is rated for fire-separation assemblies
• Moisture management — when installed with the correct vapour barrier facing and proper air sealing, batts prevent condensation within wall assemblies, protecting your home's structure from mold and moisture damage
• Long service life — quality batt insulation, properly installed, maintains its performance for the life of the building with no maintenance required
• Cost-effective per square foot — batts offer one of the lowest material costs of any insulation type, making them particularly economical for large new construction projects

The difference between batt insulation that performs at its rated R-value and batt insulation that underperforms is almost entirely in the installation. Gaps, compressions, and missing vapour barriers can reduce real-world thermal performance by 30% or more. Constant Home Comfort's certified technicians follow a precise process that ensures your insulation delivers everything it's rated for:

Pre-Installation Assessment. Our team begins with a thorough review of the areas to be insulated — checking stud spacing, identifying any obstructions, confirming cavity depths, and reviewing vapour barrier requirements for each specific assembly. We also look for any existing air leakage points that should be sealed before insulation is installed.

Air Sealing. Before the first batt goes in, our technicians seal gaps around electrical boxes, plumbing penetrations, wiring, and other openings in the framing. Air sealing and insulation work together — insulation without air sealing leaves significant performance on the table.

Batt Cutting and Fitting. Batts are cut cleanly and precisely to fit around obstructions — electrical boxes, pipes, cross-bracing, and blocking — without compressing the insulation. Compression reduces R-value; every cut is made so the batt fits snugly but without being squeezed into the cavity.

Vapour Barrier Installation. In Ontario's climate, a continuous, properly lapped and sealed vapour barrier is required on the warm side of the insulation in most wall and ceiling assemblies. Our team installs poly sheeting correctly — lapping joints, taping penetrations, and sealing around all openings — to prevent moisture from migrating into the wall assembly and causing condensation.

Final Inspection and Documentation. Once installation is complete, we perform a full walkthrough to confirm complete coverage, no missing sections, and proper vapour barrier continuity. We provide written confirmation of the installed R-values and materials used — documentation you may need for building permit sign-off, rebate applications, or future buyers.

Qualifying insulation upgrades in Ontario may be eligible for rebates and incentives through government and utility programs, reducing your out-of-pocket cost significantly. Constant Home Comfort is a registered contractor under Ontario's Home Renovation Savings Program, delivered by Enbridge Gas and Save on Energy. We verify your eligibility, prepare your application, and submit everything on your behalf — at no additional cost to you.

Programs that may apply to your batt insulation project include:

• Enbridge Home Efficiency Rebate Plus (HER+) — rebates for qualifying wall and attic insulation upgrades for Enbridge Gas customers across Ontario
• Ontario Home Renovation Savings Program — rebates available when insulation is combined with other qualifying energy efficiency upgrades such as a heat pump or new windows
• Canada Greener Homes Grant — federal incentives for eligible home energy improvements including insulation (subject to program funding availability)
• Comfort Bundle Rebates — combined rebates of $1,900 to $4,100 are available when a qualifying heat pump installation is paired with a qualifying insulation upgrade

Rebates are first-come, first-served and subject to program availability. Call 1-888-675-5907 today to confirm your eligibility before funding runs out.

Batt insulation that was installed years ago — or installed incorrectly in the first place — can leave your home dramatically under-insulated without any obvious visible signs. Watch for these indicators that your home's insulation is underperforming:

• Cold or drafty walls, even with the furnace running — a sign that your wall insulation has settled, deteriorated, or was never installed properly
• Rooms that are significantly colder or hotter than the rest of the house — especially corner rooms, rooms above garages, or rooms on the top floor
• Consistently high energy bills that don't reflect your usage habits
• Condensation or frost on interior surfaces of exterior walls in winter — a sign of missing or inadequate vapour barrier
• Mold or moisture damage inside wall cavities discovered during a renovation — often the result of improperly installed or missing vapour barriers
• Your home was built before 2005 and the wall insulation has never been assessed or upgraded
• You are currently renovating and have open wall or ceiling cavities — the ideal time to insulate or upgrade before closing up

If your home is currently under renovation with exposed framing, this is the single best moment to upgrade your insulation — once the drywall goes back up, the opportunity is gone until the next renovation. Call us now and we'll get a technician to your home before your contractor closes the walls.

Both batt insulation and blow-in insulation are excellent options — the right choice depends on the specific application and what's accessible in your home. Batts are the preferred solution when wall cavities or floor bays are open and accessible, such as in new construction or during a renovation before drywall is installed. Blow-in insulation is the better choice when you need to insulate existing closed wall cavities without opening the walls, or to top up an attic that already has existing insulation. In many homes, both types are used: batts in the walls during construction, and blow-in added to the attic floor to reach R-60. Constant Home Comfort installs both — and our team will recommend the right solution for each area of your home during your free assessment.

Constant Home Comfort has been helping Ontario homeowners build more efficient, more comfortable homes for years. We serve the full GTA, Hamilton, Ottawa, London, Waterloo, Barrie, and surrounding communities — and as a multi-trade contractor, we understand how insulation works as part of your home's complete building envelope, not just as a standalone product. When you choose us for batt insulation installation, you get:

• Certified, experienced insulation technicians who install to Ontario building code requirements and manufacturer specifications every time
• A free in-home assessment before any work begins — no guesswork, no hidden costs
• Correct vapour barrier specification and installation for every assembly in your home
• Rebate management included — we identify the programs you qualify for and handle every step of the application
• Full price transparency from the first conversation — no surprises on installation day
• $0 down, 0% interest financing available on approved credit
• Province-wide coverage — GTA, Hamilton, London, Ottawa, Waterloo, Barrie, and all of Ontario

What is the difference between faced and unfaced batt insulation?

Faced batts have a kraft paper or foil backing that acts as a vapour retarder and is stapled to the face of the studs during installation. Unfaced batts have no facing and are used in applications where a separate poly vapour barrier is being installed, or in interior wall assemblies where vapour control is not required. Our technicians specify the correct type for each application in your home based on Ontario building code requirements.

Can batt insulation be installed in an existing finished home?

Batt insulation requires open, accessible cavities, so it is generally not suited for retrofitting into existing finished walls without opening the drywall. If you want to add insulation to existing closed wall cavities without a full renovation, blow-in insulation is typically the better solution. However, if you are currently renovating with exposed framing, or if you are building new, batt insulation is ideal. Our team will help you determine the right solution for your specific situation.

How long does batt insulation last?

Properly installed fiberglass and mineral wool batt insulation can last the lifetime of the building — often 80 years or more — without significant degradation in thermal performance. The most common reasons insulation underperforms over time are moisture infiltration due to a failed vapour barrier, physical compression from renovations, or pest damage. Annual HVAC maintenance visits are a good opportunity to check visible insulation in accessible areas like the attic.

Is batt insulation safe for my family?

Yes. Both fiberglass and mineral wool batt insulation products used in Canadian residential construction meet strict Health Canada and industry safety standards. Once installed behind drywall or another finished surface, fibres are fully contained and pose no inhalation risk. Installers wear appropriate personal protective equipment during the installation process, and your home is fully safe to occupy immediately after installation is complete.

Do I need a vapour barrier with batt insulation in Ontario?

In most above-grade exterior wall and ceiling assemblies in Ontario, yes — a continuous poly vapour barrier is required on the warm interior side of the insulation under the Ontario Building Code. The vapour barrier prevents interior moisture from migrating into the wall cavity, where it could condense and cause mold or structural damage. There are some assemblies — such as certain basement walls — where the vapour barrier approach differs. Our technicians are fully trained in Ontario Building Code vapour barrier requirements and will specify and install the correct approach for every part of your home.

Whether you're building new, finishing a basement, or taking advantage of an open-wall renovation to upgrade your home's thermal protection, Constant Home Comfort's certified insulation technicians are ready to help. We serve homeowners across the GTA, Toronto, Hamilton, Ottawa, London, Waterloo, Barrie, and all of Ontario — with honest pricing, code-compliant installation, and complete rebate management included in every project.

Call 1-888-675-5907 to book your free in-home assessment. We'll assess your current insulation levels, confirm your eligibility for Ontario rebates, and give you a complete, transparent quote — before any work begins, with no pressure and no surprises.

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