Sika Bond Contractors PVA - 2.5L - White
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Product Information
Full details
Sika Bond Contractors PVA is a versatile, water-based solution designed for professional contractors and DIY enthusiasts who need a reliable, cost-effective adhesive, sealer, and mortar improver. It excels at bonding common building materials and preparing porous surfaces for painting or plastering, though users should note that it is not intended for high-moisture or exterior applications requiring full waterproofing.
All features
| Colour | White |
|---|---|
| Model Part Number | 757726 |
| Brand | Sika |
Extended Product Information
FAQs
Can I use Sika Bond Contractors PVA outdoors?
This product is primarily for interior use. It is not designed to withstand constant exposure to rain or high-moisture environments.
How much should I dilute it for priming?
Dilution ratios vary based on surface porosity. Generally, a ratio of 1 part PVA to 3-5 parts water is standard for initial priming.
Is it safe to use on wood?
Yes, it acts as a very effective wood glue for general joinery and craft applications.
Can this be used as a waterproof additive?
No, it is a water-based adhesive and will not render surfaces waterproof.
What is the shelf life of this product?
Keep the container tightly closed and stored in a cool, frost-free environment to ensure maximum shelf life, typically up to 12 months.
Does it have a strong odor?
As a water-based PVA, it has a mild scent that dissipates quickly once the product dries.
Troubleshooting
PVA is drying too quickly on highly porous surfaces
Apply a second, slightly more diluted coat to ensure better penetration and uniform sealing.
Poor bond strength on very smooth surfaces
Mechanically abrade the surface with sandpaper or a wire brush to increase the surface area before application.
Tools are stuck with dried PVA
Soak tools in a suitable solvent or use hot water and vigorous scrubbing to remove hardened residue.
Pros and Cons
Pros
- Excellent value for general construction use
- Improves workability of mortar and renders
- Highly effective for priming porous substrates
- Compatible with a wide range of common materials
- Simple water-based application
Cons
- Not suitable for use in permanently wet or submerged conditions
- Requires careful preparation for non-porous surfaces
- Drying time may increase in high humidity
Setup, Compatibility & Care
For optimal results, ensure surfaces are clean, dry, and free from loose debris or oil. When using as a primer, dilute the product with water according to the porosity of the surface. For cement admixture, add the product directly to the gauging water. Cleanup is straightforward while the product is still wet; use warm water to rinse brushes, rollers, and mixing tools. Once dried, the product is difficult to remove and may require mechanical abrasion or strong chemical solvents.