Primary recommendation
PU560 Polyurethane Construction Sealant
Polyurethane sealant for compatible concrete movement joints, precast connections and exterior construction joints.
Sealant Application Guide
Sealants for Concrete Joints
Concrete joints need a sealant matched to the expected movement, joint geometry, exposure and substrate condition. PU560 is designed for compatible concrete movement and construction joints. MS660 offers an MS polymer option for compatible multi-material sealing and selected bonding.
Recommended Vesta products
Start with the product matched to the joint exposure, then confirm substrate compatibility and project requirements.
Alternative for specific conditions
MS660 MS Polymer Sealant
MS polymer sealant for compatible multi-material joints and selected bonding where a paintable finish may be useful.
Where this application fits
Use the scene first to identify the joint, then check the substrate, exposure and movement below.
Exterior concrete movement joints
Designed joints that accommodate movement between compatible concrete sections.
Precast and facade connections
Construction joints around compatible precast elements, panels and adjacent building materials.
Mixed-material construction joints
Compatible connections involving concrete, metal, stone, wood or PVC, with adhesion checked on the actual materials.
- Concrete expansion and movement joints
- Precast concrete connections
- Concrete-to-metal construction joints
- Compatible facade and panel perimeters
- Selected interior and exterior multi-material joints
Common substrates
- Concrete and cementitious surfaces
- Precast concrete elements
- Compatible metal and coated components
- Stone and masonry after a staining check
- Wood and PVC when compatible with the selected product
Key performance requirements
- Movement capability matched to the joint design
- Adhesion to the actual prepared substrates
- Joint width and depth controlled with suitable backing
- Resistance to the stated indoor or outdoor exposure
- Primer, paintability and adjacent-material compatibility confirmed for the project
Product selection guidance
Choose by service condition
Start with the expected joint movement and exposure. Choose PU560 for compatible concrete movement and construction joints. Consider MS660 when the project includes multiple compatible materials or needs an MS polymer product. Finalize the joint geometry, backing material, primer need, paint system and adhesion on the actual substrates before specification.
Before Application
Application considerations
- Make sure the gap is a designed sealant joint rather than a structural crack or failed concrete repair.
- Remove laitance, dust, curing compounds, oil and unstable material from the bond faces.
- Use suitable backing material to control depth and avoid three-sided adhesion where required.
- Check the actual concrete condition, coatings and adjacent materials before choosing the product.
- Follow the product instructions for installation temperature, cure conditions and site access.
Common Questions
Frequently asked questions
Which Vesta sealant should I use for a concrete movement joint?
Start with PU560 for a compatible concrete movement or construction joint. Before ordering, match it to the expected movement, joint dimensions, surface condition and exposure.
When should MS660 be considered instead?
MS660 is an alternative when the joint includes multiple compatible materials or the project calls for an MS polymer product. Check the actual materials, movement and finish requirements before use.
Can sealant repair a structural crack in concrete?
A structural crack needs diagnosis and an appropriate repair design. Do not treat a movement-joint sealant as a substitute for structural concrete repair.
Does every concrete joint need primer?
Primer need depends on the selected product, concrete condition, porosity and project exposure. Use the actual prepared substrate for adhesion review and follow the current technical guidance.
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