Expansion and control joints in concrete

What expansion & control joints involves

1. Plan joint layout before the pour
2. Place expansion joint filler against walls and existing slabs
3. Saw-cut control joints at the right time (usually within 24 hours)
4. Clean joints and fill with flexible sealant where needed

How much expansion & control joints costs

Joints are normally part of the concreter's price. Re-sealing old joints is quoted per job; there's no reliable public per-metre price.

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Before you hire

• Ask for the joint layout on paper before the pour
• Keep panels roughly square – long thin panels crack
• Check joints are cut deep enough (about a quarter of the slab depth)

Standards and approvals

Who does expansion & control joints

27 businesses in the directory list this service; 27 of them mention it on their own website (the quote is on each business page).

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