Frequently Asked Questions

What is the difference between water, solvent and chemical-based sealants?

Frequently Asked Questions

Q: What is the difference between water, solvent and chemical-based sealants?

A: The main differences in the three types of sealants are the ingredients used in the diluents. Diluents are the liquid ingredients in a sealant that are added to make products more fluid and easier to apply. When the diluents evaporate, or dry, an elastic, adhesive paste is left. This is your sealant.

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Sealant Types

Different Properties

Sealant Types

The differences between sealant types include:

  • drying time

  • odour

  • ability to be applied to moist surfaces

  • ease of application

  • length of time for product storage


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Water-based Sealants

Properties

Water-based Sealants

Water-based sealants contain water diluents in the product composition. They are also referred to as latex sealants or caulk.

Water-based sealants are easy to use, affordable and paintable.

They can be applied indoors and outdoors to a wide range of surfaces, including wood, ceramics, gypsum, masonry and glass. They can also be applied to damp surfaces.

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Solvent-based Sealants

Properties

Solvent-based Sealants

Solvent-based sealants utilize solvents as diluents. These solvents may include mineral spirits, toluene or xylene.

They are mainly used outdoors and are best used with masonry, wood, bare metal and galvanized steel.

Certain Mulco® solvent-based sealants have the benefit of being applicable to damp surfaces.

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Chemical-based Sealants

Properties

Chemical-based Sealants

Chemical-based sealants are composed of silicone, polyurethane or polysulphur diluents. They are also called silicone sealants.

Chemical-based sealants must be applied to dry surfaces. ​

They are best utilized when sealing:

  • glass

  • fiberglass

  • bare metal

  • ceramics

  • wood

Chemical-based sealants are preferred for their increased flexibility, long shelf life and ability to endure extreme temperatures.

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