Attic insulation cost for a detached Vaughan house usually falls between $1,500 and $5,000. Job type, floor area and the state of the old fill push yours up or down that scale.

The ranges on this page reflect current Ontario market prices. The written quote that follows your free walk-through is the number to plan with.

Attic Insulation Cost details

Attic Insulation Cost By Job Type

Typical Ontario prices, counted by the square foot:

Topping up a clean existing layer runs $1.25 to $2.50.

Blowing fiberglass to R-60 runs $1.50 to $3.00.

Blowing cellulose to R-60 runs $1.40 to $2.75.

Taking out fouled insulation, disinfecting and refilling runs $3.50 to $6.50.

Sealing combined with a top-up runs $2.00 to $3.75.

Vaulted or cathedral ceilings run $3.50 to $7.00.

Small jobs begin at roughly $1,200.

What Pushes The Attic Insulation Cost Up

Fouled insulation adds the most to the bill, since taking it out and disinfecting means extra labour and disposal fees. A shallow roof pitch, dozens of pot lights to seal or a hatch tucked in a closet also slow the work.

What Keeps The Attic Insulation Cost Down

The least expensive attic is dry and clean, with a hatch in an open hallway. Bundling sealing, hatch work and the top-up into one visit is cheaper than booking them separately.

Rebates And The Attic Insulation Cost

A provincial rebate can trim the attic insulation cost, but who installs the work matters. Read the attic insulation rebate page before you plan around one.

Get Your Attic Insulation Cost In Writing

Phone (289) 210-8363 or send the form, and the walk-through ends in a written price. The estimator lives on the home page.

Related Attic Services

Most Vaughan attics end up needing two or three of these together.

  1. Grey blown cellulose piled deep on both sides of a plywood walkway between roof trusses

    Attic Insulation Top-Up

    An attic insulation top-up lays fresh blown fill over whatever clean layer is already there, lifting a thin attic to about R-60 in a single visit. It fits any attic whose existing insulation is still dry and free of droppings.

  2. Tan fiberglass batts between attic joists on each side of a plywood walkway leading to a gable vent

    Blown-In Fiberglass Insulation

    Blown-in fiberglass insulation is fluffy glass fibre carried by air down a hose until it drifts into every bay and corner. It weighs little, never soaks up water and brings a thin attic up to current levels fast.

  3. Thick grey-brown blown cellulose covering an attic floor beneath dark roof boards

    Blown-In Cellulose Insulation

    Blown-in cellulose insulation is shredded recycled paper treated with borates against fire, mould and insects. Blown to the right density, this attic insulation tucks around wires and truss plates and forms a heavy, quiet layer.

  4. Worker in a white protective suit and respirator stuffing old pink batts into a black bag in an attic

    Rodent Damaged Attic Insulation Removal

    When mice, squirrels or raccoons have nested in the attic, we take out the fouled attic insulation, disinfect the bare joists and close the holes they used from inside. New insulation is installed only after that.

  5. Worker in a dust mask and gloves pressing a pink batt into a wall stud bay beside a window frame

    Attic Air Sealing

    Attic air sealing blocks the openings between the rooms below and the attic, so heated air stays in the house and the fill above can do its job. We seal pot lights, wire holes, plumbing vents and wall tops from the attic side.

  6. Pink fiberglass batts laid around a framed attic hatch opening in a finished attic floor

    Attic Hatch Insulation

    Attic hatch insulation seals and insulates the access panel in your ceiling. An unsealed hatch can let out more heat than a large stretch of insulated ceiling around it.

  7. Worker standing on a scaffold pressing a mineral wool batt between ceiling joists

    Cathedral Ceiling Insulation

    Cathedral ceiling insulation packs the thin rafter cavity above a sloped ceiling, where there is no attic floor to work on. The method depends on how deep the rafters are, how the roof vents and how we can get inside.

  8. White loose-fill insulation spread across an attic floor up to the bottom of the roof trusses

    Attic Insulation Rebate

    Through its Home Renovation Savings program, Ontario's gas and electricity utilities have offered an attic insulation rebate topping out at $1,250 for an attic finished at R-50. Here is what the program's own pages said when we read them, so you can plan with real figures.

Ask For A Free Attic Walk-Through

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