One of the key elements to reducing heatloss using thermal blinds is to get a good edge seal between the blind and the frame when they are down. This is achieved using high-performance magnets which are sealed within the blind along the outer edges. Each ‘internal’ magnet is then paired with a self-adhesive magnet attached to the window frame, which ‘click’ tightly together when the blind is lowered. They are described by the manufacturer as “Ultra High Performance Neodymium Magnets” – the most powerful permanent magnets known. They are supplied in nickel finish but can be painted on site (we’ve used Humbrol enamels) to match your frame.

We use 10mm diameter N42 Neodymium Magnets. The NORTH pole is on the showing magnetic face and the SOUTH pole is on the face covered in adhesive. These Magnets are plated with 3 layers of protective coatings – Nickel + Copper + Nickel (Ni-Cu-Ni). More technical details are below; Continue reading →