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What are the Types of Window Frames and Its Materials

Material Used for Window Frames

A variety of materials are used for window frames such as metal frames, timber frames, vinyl frames, composite frames, fiberglass frames, etc. Each material has its own pros and cons and is suitable as per location, climate, aesthetics, function, and style.

Metal Frames


  • Light, strong material
  • Maintenance-free
  • Corrosion-resistant
  • Does not warp or shrink as wood does
  • Does not require painting as it is powder-coated in the factory.


  • Conduct heat rapidly -a poor insulating material.
  • Prone to rusting for a few types of metals.
  • To reduce heat flow, metal frames should have a thermal break – an insulating strip.

Timber Frames


  • Soundproof provides insulation, strength and security.
  • Durable and lasts for years.
  • Eco-friendly material


  • Care should be taken by sealing to prevent from absorption of moisture.
  • May sag over time as per differential atmospheric conditions.
  • Affected by termites unless care is taken.

Vinyl/PVC Frames

PVC window frames are made of polyvinyl chloride and mostly preferred as it is fire resistant.


  • Economical and durable
  • Light in weight and easy to install
  • Resists damage by termites
  • Weather and moisture resistant


  • Weak than aluminium/steel
  • High coefficient of thermal expansion
  • Not resistant to UV light
  • To make them thermal resistant, window frames are filled with insulation.

Composite Frames

Window frames

Consists of composite wood products, such as particleboard and laminated lumber mixed with polymer plastics.


  • Better moisture resistance than conventional wood.

Fiberglass Frames


  • Durable and resistant to extreme climate conditions.
  • Elegant and classy
  • Energy efficient
  • Have air cavities that can be filled with insulation


  • Expensive than standard wood

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