How Thick Should a Concrete Spacer Be? Choose by Concrete Cover

Last updated: 14 Nov 2026  |  72 Views  | 

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Short answer: A concrete spacer must be as thick as the concrete cover specified in the drawing for that work; there is no single value for every job. CCP concrete spacers provide covers from 2.5 to 10 cm, in models for walls and slabs, made from 400 ksc concrete.

What is concrete cover and why it matters

  • The distance from the rebar surface to the outer concrete surface; it protects against rust and lets the steel work as designed
  • This distance is set by the designer according to the element type and environment; check the figure in the drawing before ordering spacers

CCP concrete spacer sizes

UseCover (cm)Packing
Wall3 / 3.5 / 4280 pcs per sack
Slab2.5 / 3-
Slab4.5 / 5-
Slab7.5 / 10-
  • Curved shape holds rebar securely; one spacer gives 2-3 cover levels as shown in the table, reducing the number of models to stock
  • Wall and slab drawings can be downloaded on the product page

How to choose in 3 steps

  1. Check the concrete cover in the drawing for that element
  2. Choose the model for the work (wall / slab) that gives the cover in the drawing
  3. Place enough spacers that the rebar does not sag between them, as specified by the site supervisor

Why use precast concrete spacers

  • 400 ksc concrete, consistent size in every piece
  • Exact cover, easy to inspect
  • Used in precast concrete elements, walls and slabs

FAQ

How thick should a concrete spacer be?

Equal to the concrete cover in the drawing. CCP spacers range from 2.5 to 10 cm.

Can one spacer provide more than one cover?

Yes. One spacer gives 2-3 covers as shown in the table, e.g. the wall model gives 3 / 3.5 / 4 cm.

Can I buy in bulk or have spacers delivered upcountry?

Yes. Ordering is easy: we can ship by transport, or you can order on Shopee, Lazada and Thaimart. Prices depend on model, quantity and delivery area; please contact our sales team.

Where can I get drawings?

Download them from the product page.

Enquiries and orders

Product: Concrete Spacer · Standards and Certifications

Sales 092-224-6640, 085-123-8961, 081-341-1610, 085-123-7254, 086-983-8709, 061-401-2720, 090-090-4926 · LINE @ccp-concrete

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