Best self-adhesive foil insulation rolls

Top pick: Reflectix Self-Adhesive Reflective Foil — the one to start with. It's a genuine peel-and-stick foil roll (1 × 5 m) rated to reflect up to 97% of radiant heat and it's waterproof, so it holds up on ducts, garage doors and shed walls where tape-on barriers peel off.

Who the others suit:

• túlán Self-Adhesive Aluminum Foil Roll — a thicker 5 mm foam-backed sheet in a smaller size; better for short runs and spot patches than whole walls.
• FUTUREORYY Aluminum Foil Self-Adhesive Mat — thin, cut-to-fit sheets; handy for small panels and tight spots.
• BlueTex Pro 2 mm Super Wide — the widest coverage of the bunch, best for large flat areas like a whole garage ceiling.
• Dinosam / Petoto / SmartSHIELD double-bubble rolls — no adhesive, so plan on staples or spray glue; good value for big open bays.
• TWCUSEP rolls — narrow utility sizes for wrapping pipes and small gaps.

Check the roll width against your stud or joist spacing before ordering.