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Xtreme HM Sanitary Silicone Sealant

A superior anti-mould acetoxy silicone sealant guaranteed to prevent mould, mildew and bacterial growth for up to 10 ...

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Xtreme HM Sanitary Silicone Sealant
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Mega Foam PU Expanding Foam

All purpose B3 "2 in 1" polyurethane foam supplied in canister for use as either hand held or gun grade versions, usi...

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Mega Foam PU Expanding Foam
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How to make a silicone sealant joint

H
Hannah Patrick
Jan 20, 2026 1 mins read
How to make a silicone sealant joint

Applying silicone sealant correctly creates a clean, watertight finish around kitchens, bathrooms and fittings.

What you’ll need

Silicone sealant, caulking gun, masking tape, smoothing tool or gloved finger, cleaning wipes, utility knife.

1. Preparation

  • Remove all old sealant before applying new silicone.

  • Clean and dry the joint thoroughly.

  • Apply masking tape along both sides of the joint if required.

  • Cut the nozzle at a 45° angle and load into the gun.

2. Application

  • Apply a steady bead of silicone at a 45° angle, ensuring the joint is fully filled.

  • Work smoothly and consistently along the joint.

3. Finishing

  • Smooth immediately using a damp finger or smoothing tool.

  • Remove masking tape before the sealant skins.

  • Allow to cure fully (typically 24–48 hours) before exposure to water.

Key tips

  • Use the correct sealant for the application.

  • Ensure surfaces are completely dry.

  • Work in short sections for best results.

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