Diall Aluminium Foil Joining Tape

Product information

Keep loft insulation, membranes and vapour barriers properly sealed with this heavy-duty aluminium foil tape from Diall. This 100mm x 45m roll forms a permanent adhesive bond and is rated for both interior and exterior use – ideal for joining insulation rolls, sealing membrane overlaps, patching ductwork and general sealing repairs on site. At just 0.07mm thick it lies flat against joints for a clean, professional finish that won't catch or peel at the edges. Supplied as a single 620g roll, there's enough here to get through a full day's loft install without stopping for a second roll.

• Guarantee: 1 year
• Single-sided
• Suitable for: jointing, sealing and patching

Features & benefits

• Permanent adhesive bond – seals and stays sealed, so joints don't need re-taping on a call-back
• Interior & exterior rated – one tape for loft work, roofing, ductwork and general site repairs
• Durable aluminium construction – resists tearing and holds up in dusty, cramped loft spaces
• 45m per roll – enough coverage to finish a full loft job without switching rolls mid-task
• 100mm width – covers wide overlaps and larger gaps in fewer passes, saving time on site
• Low-profile 0.07mm thickness – lies flat for a neat, professional finish customers notice

Important Information

• Apply to clean, dry, dust-free surfaces for the strongest bond – adhesion is reduced on damp or dirty joints.
• Best applied at room temperature; in cold, unheated lofts press firmly along the full length after application to aid initial tack.
• This is a general-purpose jointing and sealing tape – it is not fire-rated and should be kept clear of flues, heat sources and electrical equipment.
• Not a structural fixing – use for sealing and joining only, not for load-bearing or safety-critical applications.
• Store the roll in a cool, dry place; direct sunlight and extreme heat can affect the adhesive over time.
• Guaranteed for 1 year from purchase – keep your order confirmation as proof of purchase.