Caulking or sealant is a material used to seal openings around a structure.

A caulking joint bonds together two materials, for example, a window frame to a concrete wall or between two concrete panels, to block the movement of water or air through the building’s envelope.

Professional caulking has to be performed to the highest standards and in accordance with the construction industry. The caulking sealant must be applied on a clean surface, free of dirt, old materials, moisture or dust.




Ripping and removal of old caulking. This allows an impeccable application of caulking that will last for 10-20 years.



Precise cleanup. We use a knife or an electrique knife to remove old caulking that is hard to rip out.



We clean the surface with alcohol to ensure that surface is clean.



An application of a backer rod: Used if the openings are 4mm (1/4 inch) or wider. The backer rod prevents the sealant from sinking into deeper gaps



We go over the caulking joints with a wet custom-made wood stick to ensure that the caulking joint is smooth and flawless.



We use tooling as a smoothing technic to enhance the sealent and appearance of the caulking joint to look flawless.



We remove the sealant particles from the property of the client.

To learn how to remove caulk, click here

To learn how to use a caulk gun click here

Why are Door and window caulkings essential?

Whether it’s caulking windows or doors, it’s an essential part of your property’s winterization and energy efficiency. Exterior window caulk will prevent cold air from entering your home, which means it is easier to maintain a more stable temperature in your rooms, reducing the time it takes to maintain your heating. This means not only that your home stays at a more comfortable temperature but also that you reduce your energy bills, putting more money back in your pocket.

Sealing the joints, gaps and openings also help to prevent moisture from seeping into your property. This is a common problem for home and property owners across the country, and as water seeps in, it can lead to the rapid growth of mould and bacteria, which can be harmful to your family and pets. Water damage is also detrimental to a building, its materials and contents. Repairing water damage can be time-consuming and result in expensive repair bills.

Caulking helps to prevent or limit:

  1. Water infiltration.
  2. Air infiltration-Loss of energy
  3. The infestation of bugs and rodents.

Sealant are applied to openings throughout the building’s envelope:

What causes caulking to fail:

Over the years, elements such as extreme cold weather, the sun, air pollution, the movement of a structure (structures extract and contract) and water, wear out the sealants of the building.

What is the building’s envelope?

The building’s envelope is the exterior façade of the building. It is the building’s physical separator between the conditioned and unconditioned environment of a building, including the resistance to air, water, heat,[1] light, and noise[2] transfer (Wikipedia). A building’s envelope creates proper insulation for the interior of the building. The envelope is exposed to water and sun, so it must be sealed properly to serve its purpose.

What causes exterior caulk to fail?

Over the years, elements such as extremely cold weather, sun, air pollution, the movement of a structure (structures extract and contract) and water, wear out the sealants of the building.

How do i know when it is time to replace the sealants?

Calfeutrage Apex advises to:

  1. Look at the south side of your building; it is the side that has the most exposure to the sun, and thus the sealants on this side will suffer more deterioration. If you notice gaps and cracks, the caulking has to be re-done.
  2. Do you feel cold/hot drafts coming from your doors or windows?
  3. Do you notice the appearance of spider webs outside your windows during fall? That may be a sign of heat loss that attracts spiders to build their webs near a heat source.
  4. Water and moisture coming in through your windows.
  5. Poke the sealant joint with a pen or your finger. A good caulking joint should be flexible and bounce back. If the sealant joint is hard and dry, it needs to be replaced.
  6. Determine when the last time the building was sealed. If past the 12 to 20-year mark, water leaks, wood rot, or other damage may have already begun to occur.
  7. Determine the type of sealant currently in use on-site. Inferior products may mean a shorter life cycle.

The best time of the year to caulk

Typically, the ideal season for caulking is spring through fall; however, caulking can be applied at a temperature between -10°C and 40°C as long as the surface is dry. Heavy snowfall and rain under most circumstances will not allow the proper application of sealants.

What are the different types of caulkings?

There are 3 POLYMERS OF CAULKS; each one has different properties.

Acrylic Latex

Latex sealants are paintable, making them perfect for indoor use. Latex caulk is not suitable for temperatures to change drastically, so it is not recommended to be used outdoors if you live in hot or very cold places.

Polyurethane caulk

Is used often in commercial buildings as it is extremely durable. However, Polyurethane has less elasticity than other caulks, and it can not be applied in cold temperatures. Polyurethane application is also harder than other brands, and the removal of the old caulk may take double the time it would take to remove silicone sealant. Polyurethane is used on wood surfaces as it adheres to wood better than other types of caulks and may take 48-72 hours to cure.


Silicone caulking:

Silicone-based caulking is an excellent choice for buildings in places with extreme cold hot weather. Its flexibility and elasticity allow this caulk to extract and contract in weather changes without cracking or splitting. Its application is easy and convenient, and it can be applied to a building at -20C and up to +45C.  You can not paint over Silicone sealants; however, nowadays, most manufacturers manufacture silicone-based sealants in a significant variety of colours. Silicone caulk can be applied to a variety of surfaces, and it cures within 24 hours.

Our Warranty

At Calfeutrage Apex, we stand by our work and products, offering our residential clients a 10-year limited warranty and our commercial clients a 5-year limited warranty. The high-quality commercial-grade silicon-based caulking, adseal 4580, that we use has the best UV light resistance and a longer life expectancy. According to Adfastcorp, Adseal series 4580 has a life expectancy of 30 years, which is the best in the industry. The warranty is fully transferable when your house is sold to the next owner, for the full length of the contract’s initial 10-year period.