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Draft dodger

Waterproof sealant for metal:
Steel the deal

Need to draft-proof your metal roof or fix a leaking gutter? Then reach for some waterproof sealant for metal.

What is waterproof sealant for metal used for?

Waterproof sealant for metal is used to seal joints and fill cracks and gaps, in order to keep moisture, water, dust and dirt out. It also keeps plumbing features, roofs and windows airtight and watertight. The most commonly used product is metal silicone sealant, thanks to its excellent flexibility and ability to withstand expansion and contraction of building materials, but the sealant can also be polymer and rubber-based.

How to use waterproof sealant for metal

  1. Clean. To ensure the best quality seal, clean the area being sealed to remove dirt, grease and debris – including old sealant. Clean the area with white spirit and allow to dry.
  2. Prepare. Cut the tip of the cartridge above the screw thread and trim the nozzle to size. Load the cartridge into a standard cartridge gun. Be cautious when cutting – if the hole is too small at first you can always cut it larger, but not the other way around. 
  3. Seal. Starting at one end of the joint you are sealing, gently but firmly squeeze the gun’s trigger and work the tip of the dispenser nozzle along the joint in a smooth, continuous movement. 
  4. Dry. Use a tool like UniBond Sealant Smoother tool to smooth the bead of sealant you’ve just applied and compact it into the joint. Leave the sealant to dry as per the product’s instructions.

Choosing the best sealant for metal

When it comes to finding the best silicone sealant for metal, UniBond Outdoor Window and Door Frame Sealant is perfect for sealing, filling and insulating most common construction joints in your home. Providing a strong, flexible and lasting seal, this sealant offers fantastic adhesion on a number of different metals, including anodized or pure aluminium, steel and stainless steel.

It also versatile, working equally well with ceramics, glass, tiles, concrete and wood, making it ideal for worktops, toilets, downpipes, gutters, skirting board, sinks and baths. 

If you need a sealant for outdoor metal objects or features, UniBond Roof & Gutter Sealant is specially formulated to fill connections and joints in downpipes and guttering. For other roofing applications, such as roof panels and tiles, as well as other roofing applications use UniBond Outdoor Window and Door Frame. Besides being highly flexible and durable, it is waterproof, UV- and weather-resistant, ensuring long-lasting and effective results for most roofing materials.

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