Frost Proofing & Antifreeze

Frost proofer and antifreeze additives are essential for construction projects that continue through cold weather. These specialist admixtures prevent mortar, render, and concrete mixes from freezing during curing, ensuring proper strength development even when temperatures drop below 5 degrees Celsius. Without adequate frost protection, your work risks cracking, weakened bonds, and costly remedial repairs come spring.

Our Frost Protection Range

McMahons stocks a combined frostproofer and rapid hardener product from Larsen, offering dual-action cold weather protection for bricklaying and general concrete work.

• Combined frostproofer and rapid hardener - a single admixture that lowers the freezing point of the mix while accelerating the initial set, allowing work to continue safely in sub-zero conditions and reducing curing time on site.
• Compatible with bricklaying mortars, renders, and general concrete - suitable for a wide range of site applications without the need for multiple cold-weather products.
• Liquid formulation - ready to dose into mix water at the recommended rate, integrating easily into standard site mixing practice.

These products sit within our broader Adhesives & Sealants collection, alongside complementary Waterproofing Products for comprehensive weather protection on site.

Always follow manufacturer dosage rates carefully. Over-application can affect final strength, while under-dosing leaves your mix vulnerable to ice crystal formation. Check the product data sheet for minimum application temperature guidance and compatibility with any other admixtures already in your mix design.

Why Choose McMahons for Winter Building Products?

With nearly two centuries serving Irish builders, our team understands the challenges of working through harsh winters. Our branch staff can advise on the correct dosage for your specific mix designs and site conditions, helping you avoid weather-related delays without compromising structural integrity. Find your nearest McMahons branch for expert guidance and competitive trade pricing.