Wood-based sheet materials for formwork linings

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Wood products have traditionally been used as lining materials for formwork to concrete. Although timber planks were originally used as formwork linings, wood-based panel products are now more common in modern concrete construction.

This Wood Information Sheet (WIS) outlines a number of the key points and considerations to be made when using wood-based sheet materials for formwork linings, including the effect of the moisture in concrete on the timber’s service class, the benefits of using plywood for in-situ formwork and the steps which must be taken to achieve a smooth surface to the concrete.



  • Applications
  • Factors affecting performance
  • Materials
  • Specification and supply
  • Good site practice

Suggested Reading

Cross-laminated timber: structural principlesnavigation-arrow

This revision includes an additional detail for floor supported on glulam beam, as well as various minor amendments.


Cross-laminated timber (CLT) offers opportunities to use timber in taller structures with wider spans where designers would traditionally have used materials such as steel, concrete and masonry by default. As with...

08/02/2016 |  Wood Information Sheet  

Specification and use of wood-based panels in exterior situationsnavigation-arrow

Certain types of wood-based panels can be used in demanding exterior situations. However, they must be correctly specified, detailed, installed and maintained, in order to provide the desired performance and service life.

Exterior use covers a wide range of situations. They may be fully exposed to wetting by...

12/04/2017 |  Wood Information Sheet  

Specifying wood-based panels for structural usenavigation-arrow

This Wood Information Sheet covers the following wood-based panels intended for structural use: cement-bonded particleboard, fibreboard, oriented strand board (OSB), resin-bonded particleboard (also known as chipboard), plywood and solid wood panels.

Boards of these types, intended for use in construction, fall under the scope of the harmonised Standard...

06/06/2016 |  Wood Information Sheet