Adhesives & Sealants

Adhesives & sealants form the backbone of countless construction and repair projects, providing the essential bonds and weatherproof seals that keep structures secure and watertight. From fixing tiles and bonding timber to sealing joints around windows and doors, these products deliver lasting performance across interior and exterior applications. At McMahons, we stock professional-grade formulations trusted by tradespeople and suitable for confident DIYers tackling home improvement work.

Our Bonding and Sealing Product Range

We carry a comprehensive selection of products to handle virtually any fixing or sealing challenge:

• Construction adhesives for high-strength bonding of timber, metal, concrete, and composite materials: ideal for structural applications requiring grab and durability
• Silicone sealants in various colours and formulations, including sanitary-grade options with anti-mould properties for bathrooms and kitchens
• Polyurethane and hybrid sealants offering excellent flexibility and paintability for expansion joints and external weatherproofing
• Tile adhesives in ready-mixed and powder formats, suitable for ceramic, porcelain, and natural stone across walls and floors
• Fire-rated sealants and intumescent mastics for maintaining compartmentation in commercial and residential builds
• Expanding foams for gap filling, insulation support, and fixing frames in masonry openings

Many of these products work seamlessly alongside our wider Building Materials range, particularly when installing Insulation Materials or finishing around lintels and openings.

Choosing the right product depends on your substrate, whether the application is internal or external, movement tolerance required, and any specific compliance needs such as fire ratings. Always check manufacturer guidelines for surface preparation and curing conditions to achieve optimal results.

Why Choose McMahons for Your Sealing and Bonding Products?

With nearly two centuries serving the Irish construction industry, our team understands what works on site. Our staff can advise on product compatibility, application techniques, and quantities needed for your specific project: whether you're a contractor sealing an entire housing development or a homeowner regrouting a bathroom. Get in touch with our team for expert guidance on selecting the right adhesive or sealant for your next job.

Frequently Asked Questions

1. What adhesive should I use for heavy-duty applications?

Grab adhesives and construction adhesives are ideal for strong, permanent bonds on materials such as timber, metal, brick, and stone.

2. Can I use silicone sealant in bathrooms and kitchens?

Yes. Sanitary silicone sealants are specifically designed to resist mould, moisture, and temperature changes, making them perfect for wet areas.

3. What’s the difference between acrylic and silicone sealant?

Acrylic sealants are paintable and great for interior gaps, while silicone sealants remain flexible and waterproof so best for bathrooms, windows, and external use.

4. How long does sealant take to cure?

Curing times vary by product but typically range from a few hours to 24 hours. Always check the manufacturer’s instructions for exact timings.

5. Can adhesives be used on multiple materials?

Many modern adhesives are multi-purpose and bond well to wood, metal, ceramics, plastics, and masonry. Always confirm compatibility on the product label.

6. How do I remove old sealant before reapplying?

Use a sealant remover gel or carefully cut away the old sealant with a scraper or utility knife before cleaning the surface thoroughly.