Wall Drill + Fill Insulation

Cold walls and uneven rooms? Fix comfort without a full renovation.

Many older homes have little to no insulation inside exterior walls. Drill and fill is a retrofit upgrade that adds insulation to wall cavities through small access holes, then we patch and leave it clean. It is one of the best ways to improve comfort in bedrooms, nurseries, offices, and living rooms that never feel right.

  • Best for: older homes, cold bedrooms, drafty exterior walls, comfort hot spots
  • Low disruption: small access holes and tidy patching, no full drywall removal
  • Real comfort gains: reduces heat loss through exterior walls and smooths temperature swings
  • Photo proof: before and after photos, scope confirmation, clean finish
Book a wall insulation assessment See the step by step
Serving Markham + GTA 5-star homeowner reviews Clean, respectful crews
Densepaclk
Retrofit Upgrade
Insulate the walls you live with
Bedrooms, offices, nurseries, living rooms and cold exterior zones.
Clean Finish
Protected and patched
Floor protection, controlled dust, tidy plugs and cleanup.
Comfort
Stops cold exterior walls from dominating the room
Retrofit
Adds wall insulation without a full gut job
Targeted
Focus on problem rooms or insulate the full perimeter
Photo Proof
Before and after photos included

What wall drill and fill fixes

If your home feels fine in some rooms but not others, empty exterior walls are often the missing piece.

Cold bedrooms in winter

Filled wall cavities help rooms hold heat longer and feel less "icy" near exterior walls.

Hot rooms in summer

Better wall insulation helps slow heat gain so upstairs and sun rooms feel more stable.

Temperature swings room to room

Insulated walls reduce the "edge effect" where some rooms always lag behind.

Cold exterior walls and corners

Adds insulation where it matters most: exterior wall cavities and common cold corners.

High heating and cooling costs

Less heat loss through walls often means less runtime and more consistent comfort.

No insulation in older walls

Ideal for homes where the walls were never insulated or were under insulated from day one.

Our drill and fill process

Clean, controlled, and planned so you get a premium result without chaos.

  1. 1
    Assess the walls and confirm scope
    We identify target rooms, wall type, access points, and what results to expect.
  2. 2
    Protect the home
    Floor protection, dust control, and a clean work zone so the home stays livable.
  3. 3
    Drill small access holes
    Access is planned to hit each cavity properly while keeping patch points tidy.
  4. 4
    Fill to the right spec
    We install insulation to properly fill cavities, then verify coverage and consistency.
  5. 5
    Patch, photo proof, clean finish
    Plugs and patching, cleanup, and photos so you can see what was done.

What we install

We recommend the right approach based on your wall type, access, and goals. Drill and fill can be a full perimeter upgrade, or a targeted fix for the rooms that cause the most frustration.

Dense pack wall insulation
Designed to fill wall cavities and reduce heat loss through exterior walls.
Targeted room upgrades
Focus on bedrooms, nurseries, offices, and the coldest comfort zones first.
Plugs and patch points
Tidy patching so the finish looks clean. Ready for paint where applicable.
Comfort first planning
We plan access and install details to get consistent results, not shortcuts.
Note: Wall construction varies. Final patch appearance and paint matching can depend on the existing wall finish. We will explain the access plan before work begins.

What's included

  • Assessment and scope confirmation
  • Access plan for each wall zone
  • Floor protection and dust control
  • Drill, fill, and coverage verification
  • Plugs and patching (as scoped)
  • Before and after photos and clean jobsite practices
Request a quote
Serving Markham + GTA. Tell us which rooms are cold so we can scope fast.

FAQ

Quick answers to common wall insulation questions.

Do you have to remove drywall?
Usually no. Drill and fill uses small access holes to reach wall cavities. We patch and leave a tidy finish. Access points depend on wall type, room layout, and the best path for proper coverage.
Will this stop drafts?
Adding insulation can reduce airflow through empty cavities and improve comfort near exterior walls. Major air leaks (like gaps around penetrations) may still need targeted air sealing. We will explain what we see.
How long does it take?
Many targeted upgrades can be completed in a single visit. Whole home wall insulation depends on size, access, and scope.
Can you do just one room?
Yes. Many homeowners start with the coldest room, then expand once they feel the difference.
How do you know the walls are empty?
We assess based on home age, symptoms, and access points. In many homes, we can confirm wall conditions during planning.

Book a wall insulation assessment

Tell us which rooms are cold or uncomfortable and we will recommend the best drill and fill plan, then quote based on scope.

Low disruption retrofit Markham + GTA Photo proof
Book now View process
Tip: mention which side of the home is worst (front, back, north wall) and which rooms feel cold.
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