Cold Floor Fix Free On-Site Quotes Residential & Commercial

Floor Insulation in Ottawa

Batt or rigid board insulation fitted between floor joists over unheated garages, crawl spaces, and cantilevered floors. Free on-site quotes, or call (343) 459-3623.

Get a Free Quote

Tell us about your project and we will get back to you within 24 hours.

What can we help with?

Service

So the right crew reviews your project.

We reply within one business day.

Where Floor Insulation Is Needed

Any floor with unheated space directly below it is a candidate for this service.

Floors Over Garages & Crawl Spaces

Rooms built above an attached or built-in garage often have a cold floor because the ceiling below is under-insulated. The subfloor itself, fitted with insulation between the joists from below.

Cantilevered Floors

Sections of a floor that project beyond the foundation.

Additions Over Unheated Space

Sunrooms, mudrooms, or additions built over crawl spaces or unheated storage that need floor insulation.

Materials

Batt or Rigid Board Between Floor Joists

Fiberglass batts are the common choice for standard joist bays, cut to fit snugly with the vapour-retarder facing oriented toward the heated space above. Rigid foam board is used where a continuous layer without joist gaps matters more, such as under a cantilever, or where depth is limited. Both are held in place with wire supports or strapping so they stay tight against the subfloor rather than sagging over time, which is what causes cold spots to come back after an install.

Our Process

Installing From Above or Below

Access assessment

We determine whether the joist bays are reachable from below, such as a garage ceiling or crawl space, or need to be accessed from above.

Material selection

Batt or rigid board is chosen based on joist depth and the type of unheated space below.

Fitting between joists

Insulation is cut and fitted tightly between joists, avoiding gaps at the ends and around blocking.

Securing in place

Wire supports or strapping hold the insulation snug against the subfloor so it does not sag or fall over time.

Floor Insulation Pricing in Ottawa

There is no fixed per-square-foot rate for floor insulation, since access, joist depth, and whether we are working from above or below all affect labour time. We confirm exact pricing with a free on-site or phone assessment.

Ottawa Insulation Experts provides professional floor insulation throughout Ottawa, Ontario. This service is for floors built over unheated space, garages, crawl spaces, and cantilevered sections such as bay windows or bump-outs, where the floor assembly itself has little or no insulation between the joists. Homeowners dealing with persistently cold floors in a specific room, rather than a whole-house heating issue, are the typical customers. We fit batt or rigid foam board between the joists, installed from above or below depending on access, and secure it so it stays in place over time.

Floor Insulation FAQs

Why is the floor above my garage always cold?

An unheated garage below means the floor above loses heat directly into that cold space. Fitting insulation between the joists separating the two closes that gap.

Is floor insulation the same as crawl space insulation?

They are related but different. Crawl space insulation addresses the whole crawl space envelope, including the ground vapour barrier and foundation walls. Floor insulation is specifically the batt or rigid board fitted into the floor assembly itself, sometimes as part of a crawl space job and sometimes on its own, such as over a garage.

Can floor insulation be installed without cutting into the floor from above?

In most cases yes, when the joist bays are accessible from below through a garage ceiling or crawl space, which avoids disturbing the finished floor.

What about a cantilevered floor, like under a bay window?

Cantilevered sections are exposed on more sides than a standard floor, so we often use rigid foam board there for continuous coverage rather than batts alone.

Will floor insulation stop drafts as well as cold floors?

Insulation reduces heat loss through the floor assembly, and we address air gaps around the rim joist and perimeter separately where drafts are also a factor.