• 30 micron aluminium foil backing with a solvent acrylic cold-weather adhesive
• UL 723:2008 Class 'O' rated when tested to BS 476 on foil-faced insulation panels
• Service temperature -35 °C to +120 °C, applies down to -20 °C
• 0 g/(m²·h) water vapour transmission rate, acts as a vapour seal
• Adhesion to steel 15 N/25 mm; tensile strength 45 N/25 mm
• High aluminium reflectance helps reduce radiant heat loss across insulation seams
• Easy-release silicone paper, keeps the adhesive face clean until peeled
• Good aging resistance both indoors and outdoors

First, wipe the substrate clean, dry and free from grease, dust and loose material. Because the cold-weather adhesive grips on a cold surface, you do not need to warm the substrate, but it must be clean.

Next, cut the tape to length with shears or a sharp knife. The aluminium foil is not hand-tearable, so a clean straight cut sits down better than a torn end and gives a neater seam.

Then peel back the silicone release paper and apply the tape across the seam. Press firmly along the centre and out to the edges to bed the adhesive into the foil face. Work the full length to remove air bubbles.

Finally, store unused rolls in original packaging at +21 °C and 50% relative humidity, out of direct sunlight. Heat and UV exposure age the adhesive in storage and shorten the working shelf life.

• Product code: SP401SB
• Backing: 30 micron aluminium foil
• Total thickness: 70 micron
• Adhesive: solvent acrylic, cold-weather formula
• Release liner: silicone paper
• Fire rating: UL 723:2008 Class 'O' when tested to BS 476 on foil-faced insulation panels
• Service temperature: -35 °C to +120 °C
• Application temperature: -20 °C to +40 °C
• Adhesion to steel: 15 N/25 mm
• Tensile strength: 45 N/25 mm
• Elongation: 3%
• Rolling ball tack: 5 cm
• Water vapour transmission rate: 0 g/(m²·h)
• Shelf life: 12 months in original packaging at 21 °C, 50% RH, out of direct sunlight