Home improvement bonding agent, the Sika Plaster Bonding Agent, helps plaster adhere to smooth, low-suction and awkward substrates with a ready-to-use gritty formula. Confidence for DIYers and tradespeople aiming for reliable first-time adhesion and visible coverage. Is the bonding approach right for your next replastering or repair job?
⚡ At a Glance
- • Bonding Performance: Fine grit creates a mechanical key to improve adhesion on smooth, low-suction substrates
- • Best for: DIYers and professional plasterers working on glass, ceramics, plasterboard and painted surfaces
- • Not ideal for: Very rough or highly absorbent substrates where traditional cement-based bonding may be preferred
Grit-enhanced bonding agent is coloured blue for clear coverage and applied in one coat. Ready-to-use formulation requires only stirring before application.
Reliable Adhesion – With fine grit bonding formula
Fine aggregate in the formulation creates a mechanical key on smooth and low-suction substrates, improving plaster grip where adhesion would normally be poor. Coloured blue helps ensure even distribution of the aggregate during application.
Improved key reduces slipping and patch failure when plastering over glass, ceramics, painted surfaces and plasterboard, so fewer repeat repairs are necessary.
Quick Coverage – Thanks to ready-to-use, one-coat application
Pre-mixed consistency glides on with a roller or brush, designed to give a full coat in a single pass without dilution. Stirring is required, but no further mixing or additives are necessary.
Faster preparation and fewer coats mean jobs finish sooner, practical for both weekend DIY projects and larger trade workloads.
Visible Application Control – With blue coloured formula
Blue pigment makes coverage immediately identifiable, helping to spot missed areas and ensuring aggregate and colour are evenly applied across the substrate. Coverage rates vary with surface porosity.
Clear visual feedback reduces the chance of missed spots and helps maintain consistent adhesion across the whole area.
✨ The 4 Key Reasons for Sika Plaster Bonding Agent
- Fine Grit Formula – Creates a mechanical key for better plaster adhesion on smooth surfaces
- Ready-to-Use – No mixing required, stir and apply straight from the tub
- One Coat Application – Cuts preparation time and reduces labour on most substrates
- Large Tub Coverage – 10-litre tub covers up to 45m² depending on substrate
📋 Technical Details at a Glance
- Category: Multi-purpose plaster bonding agent
- Suitable surfaces: Glass, ceramics, plasterboard, painted surfaces and similar substrates
- Formula: Fine grit, ready-to-use
- Colour: Coloured blue for visible coverage
- Application: Roll or brush
❓ Frequently Asked Questions
Q: Can it be used on painted surfaces?
A: Yes, the formula helps bond plaster to painted surfaces as listed in the product description.
Q: Do I need to mix or dilute before use?
A: No dilution is required; simply stir well and apply straight from the tub.
Q: How much area does the 10-litre tub cover?
A: A 10-litre tub covers areas up to 45m², with actual coverage depending on the substrate.
🏆 Our Verdict
Suitable for DIYers and professional plasterers who need reliable adhesion on smooth or awkward substrates. Blue, fine-grit, ready-to-use formulation gives visible coverage and a mechanical key to improve plaster grip. Single-coat application and larger tub sizes make for practical, long-term value on repair and replastering projects.
