Roof and surface protection glossary

Plain-language definitions to help you read technical sheets and quotes. Follow the linked guides for context, limits and sources.

Elastomer

Flexible behaviour of a dried film. It does not guarantee compatibility with every roof.

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Water repellent

A treatment intended to reduce wetting or water absorption on a suitable substrate. It does not mean leak repair.

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Nanotechnology

A term that should refer to a documented formulation characteristic. It does not establish superior performance by itself.

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Silane and siloxane

Families of organosilicon compounds used in some water repellents. Suitability depends on formulation and substrate.

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Adhesion

A coating’s ability to remain bonded to its substrate. Preparation and compatibility influence the result.

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Corrosion protection

Protection intended to limit metal corrosion under the system’s specified conditions. Paint does not restore perforated metal.

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Primer

A preparatory layer specified by some systems for adhesion or substrate protection. Whether it is required depends on the system.

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Dry film thickness

Coating thickness after drying. It differs from wet thickness and must meet product requirements.

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Impregnation

A treatment that penetrates a porous substrate rather than only forming a surface layer.

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Film-forming sealer

A product that forms a surface layer. Appearance, maintenance and stain resistance vary by formulation.

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Recoating and curing

The recoating interval indicates when another coat may be applied. Curing is a different stage; touch-dry does not mean ready for every exposure.

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