SBR Bonding Agent & Waterproofing Admixture – 5 Litre

you want cement-based work that sticks properly, lasts longer and resists water, SBR is the site essential that earns its keep. Our Trade Grade SBR 5 Litre is a versatile styrene-butadiene latex designed to be used as a bonding primer and admixture in mortars, screeds, renders and repair mixes—helping you achieve a tougher finish with fewer failures.

What SBR does (in plain English)

SBR is added to cement mixes (or used as a primer) to:
• Boost adhesion to concrete, masonry and existing cement surfaces
• Increase durability and reduce dusting/weak edges
• Improve water resistance for longer-lasting repairs
• Add flexibility to help reduce cracking and shrinkage issues
• Improve workability for smoother application and better finishing

Ideal for
• Bonding new screeds to existing concrete
• Repair mortars (patching, edge repairs, concrete make-good)
• Sand/cement renders (internal/external where specified)
• Slurry bonding coats before applying screeds/repairs
• Water-resistant cement mixes for demanding areas (where appropriate to the system)

Why contractors choose this 5L size
• Proper trade value – a handy size for regular jobs without overbuying
• Multi-use – one product covers bonding, priming and admixture work
• Reliable results – helps reduce call-backs caused by poor bonding

How to use (best practice)
• Ensure surfaces are sound, clean and free from dust/grease/loose material.
• Use SBR as a primer/bond coat or mix additive depending on the task and specification.
• Always follow the project spec / product guidance for dilution and mix ratios (these vary by application: screed, render, repair mortar, slurry coat, etc.).
• Allow adequate curing and protect fresh work from rapid drying, rain and frost.

Why buy from Wel Timber & Building Supplies?
• Trade counter service – quick, knowledgeable support when you need it
• Reliable stock – get what you need, when you need it
• Fast delivery options across London & the South East (and collection available)
• Need it alongside timber, sheet materials, fixings and sundries? One stop, one delivery.

Order now: welbm.co.uk | Call: 01923 264880