Sika Contractors PVA - 5L

Sika Sikabond Contractors PVA 5 Litre is a trade-grade, multi-purpose PVA for bonding, priming, sealing and use as an admixture in cement-based mixes. It provides excellent adhesion to plaster, concrete, masonry, brickwork and timber, helping new materials bond securely to existing substrates.
Used as a primer or sealer, it reduces surface porosity and dusting, while as an admixture it improves flexibility, cohesion and overall strength. Suitable for both professional contractors and DIY users, this versatile PVA is ideal for surface preparation, repair work and general construction tasks.

Key Features

• Multi-purpose PVA for bonding, priming, sealing and admixture use

• Excellent adhesion to plaster, concrete, masonry, brickwork and timber

• Improves flexibility, strength and cohesion of cement-based mixes

• Helps reduce porosity and dusting on concrete and masonry surfaces

• Easy to apply by brush or roller, or mix directly into mortars and screeds

Applications

• Priming porous walls, ceilings and floors before plaster, render or paint

• Sealing and dust-proofing concrete, screeds and masonry surfaces

• Bonding new plaster, screeds and toppings to existing substrates

• Admixture for mortars, screeds and renders to improve performance

• Preparation of surfaces for tile adhesives and patch repairs

• Trade and DIY construction, renovation and refurbishment projects

How to Use

• As a primer: Dilute with clean water (typically 1 part PVA to 4 parts water) and apply evenly by brush or roller to porous surfaces.

• As a sealer: Apply a diluted coat to masonry or concrete to reduce dusting and improve adhesion of subsequent finishes.

• As an admixture: Add directly to mortar, screed or render mixes according to manufacturer’s recommended dosage to enhance flexibility and bond strength.

• Clean-up: Wash tools and equipment with warm, soapy water immediately after use.

Sika Sikabond Contractors PVA 5 Litre Tub – Key FAQs

• What surfaces is this PVA suitable for?
    It can be used on plaster, concrete, masonry, brickwork, timber and other porous surfaces that need priming, sealing or bonding before further work.

• How does it improve mortars and screeds?
    When used as an admixture, it helps increase flexibility, cohesion and overall strength, improving workability and reducing the risk of cracking.

• Should I dilute it before use?
    For priming or sealing, it is normally diluted with water, while for bonding coats it is often used undiluted and allowed to go tacky before applying new material.

• Do I need to prepare the surface first?
    Yes, surfaces should be clean, sound, and free from dust, oil, grease and loose material to ensure good adhesion and consistent results.