Welcome to our wooden window restoration glossary page! Here you will find definitions for all the technical terms used in relation to sash windows refurbishment. We hope you find this helpful! We've collected a list of common sash window terms and their definitions to help you better understand the specific content thought-out our website and blog. The Glossary section of the website can be useful for you to quickly understand the meaning of unknown terms about wooden windows. The sash window glossary is a list of terms and their definitions, which can help you understand the content of our website. In addition, the Glossary can provide you with links to related articles from our window restoration blog, so you can explore the subject in more depth. If you're ever unsure about a term or concept, be sure to check the Glossary first.


Architraves | Arcs are words that originate from the ancient Greek word epistyle used to describe the plaster feature at the top of columns. In modern architecture, an Architrave | Arcs is used to describe the moulding that rounds of walls, doorways or even windows.

While Architrave is the correct team they can also go by door frames, surrounds or castings.

Architraves | Arcs are typically made out of wood but can come in different materials such as plastics or (rarely) metal.

Architraves | Arcs are used for two reasons. Firstly they are a great way to embellish a room. Although minimalistic designs are favoured in modern builds for their easy to clean nature, they can come in elaborate designs. The second use for Architraves | Arcs is more practical.

They protect the joints between the wall and the door to the exterior side of the window and wall much like the skirting bored dose. Edges to plaster are the most likely places for damage like cracking and crumbling to accrue. An Architraves | Arc around these edges can prevent this.

Other terms

  • Gloss paint definition

    Gloss paint definition and explanation

    Gloss paint is a term that describes any paints that when dry reflects some amount of light. Gloss paints can come in a wide range of variety in the amount of light that is reflected from matte (that has little reflection) to high gloss (which is very reflective) and varying levels between each, which are […]

  • Fat edge

    Fat edge

    A fat edge is a term that describes a defect on a painted surface due to improper application. A fat edge is a build-up, or accumulation, of excess paint. A fat edge is a term that describes a defect on a painted surface (window frame edges) due to improper application. A fat edge is a […]

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