# Ant sealing vs foundation crack repair in Calgary

> Ants in your Calgary home: sealing the perimeter or repairing a foundation crack? Who does what. Ant perimeter sealing from $522 + GST; carpenter ants from $1,800 + GST.

Canonical: https://www.frameworkpest.ca/ant-sealing-vs-foundation-crack-repair-calgary/
Last updated: 2026-10-25

Ants · Compare

Calgary and area · Fully licensed and insured

Short answer

Most ants get into Calgary homes at the sill plate, around pipes and wires and along siding joints, not through a structural crack. Perimeter sealing closes those gaps, from $522 + GST. If we find a real foundation crack, crack injection is referred to a foundation partner company.

[Request a written quote](https://www.frameworkpest.ca/contact/) [Call 825 747 5787](tel:+18257475787) [Text a photo](sms:+18257475787)

_Photo: Achim Hering, [CC BY 3.0](https://commons.wikimedia.org/wiki/File:Piping_floor_penetrations_nortown_casitas.jpg), via Wikimedia Commons_

## Who does what

| Job | Foundation company | Framework Pest |
|---|---|---|
| Structural or leaking foundation crack | Yes, crack injection | Referred to a partner |
| Sill plate and rim joist gaps | No | Yes |
| Pipe, wire and vent penetrations | No | Yes |
| Siding, window and trim joints | No | Yes |
| Ants already inside | No | Yes |
| Carpenter ant nest in the structure | No | Yes |

_Photo: Achim Hering, [CC BY 3.0](https://commons.wikimedia.org/wiki/File:Caulking.jpg), via Wikimedia Commons_

## Prices

- Ant perimeter sealing: from $522 + GST.
- Carpenter ant work: from $1,800 + GST.
- Foundation crack injection: partner referral, quoted by the partner.

Every job gets a written quote after inspection.

## Why one crack is rarely the whole story

Ants follow moisture and warmth along many small joints at once. Seal one and they use the next. Calgary’s Chinook swings can take a wall through several freeze-thaw cycles in one winter, and each cycle works sealant and trim joints loose.

## What you can do today

- ☐ Note where you see ants and at what time of day.
- ☐ Wipe trails with soapy water instead of spraying.
- ☐ Keep firewood and mulch away from the foundation.
- ☐ Fix leaks under sinks and at hose bibs.

## Related reading

- [Ant entry points](https://www.frameworkpest.ca/ant-entry-points-calgary/)
- [Ants](https://www.frameworkpest.ca/pests/ants/)
- [Sill plate](https://www.frameworkpest.ca/glossary/#sill-plate)
- [Crack injection](https://www.frameworkpest.ca/glossary/#crack-injection)
- [What it costs](https://www.frameworkpest.ca/cost/)
- [Framework Pest home](https://www.frameworkpest.ca/)

## Questions

### Should I call a pest company or a foundation company for ants in Calgary?

Usually a pest company first. Most ants get in at the sill plate, around pipes and wires, and at siding and window joints, not through a structural crack. If we find a real foundation crack, we refer crack injection to a foundation partner company.

### How much does ant perimeter sealing cost?

Ant perimeter sealing with Framework Pest starts from $522 + GST. Carpenter ant work starts from $1,800 + GST, because it involves finding and treating the nest in the structure as well as sealing. You get a written quote after inspection.

### Do you do foundation crack injection?

No. Crack injection is a foundation trade. We refer it to partner companies and say so in the quote.

### Will sealing a foundation crack stop ants?

Only if that crack is how they get in. Ants use many small gaps at once, so sealing one crack often moves them to the next joint.

### Why are carpenter ants priced higher?

Carpenter ants nest in damp or damaged wood. The work includes finding the nest, treating it and dealing with the moisture source, not just sealing the perimeter.

## Show us the gap.

Text a photo, call, or request a written quote.

[Request a written quote](https://www.frameworkpest.ca/contact/) [Call 825 747 5787](tel:+18257475787) [Text a photo](sms:+18257475787)