Fitting a Letterbox or Cat-Flap

Letterboxes and cat-flaps can easily allow draughts into the house when they stick in the open position after a delivery or pet entry.  Proprietary draught excluders are readily available and can be fixed into place easily in order to prevent this problem and make the house feel warmer and more comfortable.

There are two types of draught excluder on the market.  One is a basic flap that falls back into place and provides an inner barrier on the door to stop the draught entering should the outer flap jam, as will inevitably happen no matter how often you lubricate it.  The other type is much more effective and is a variation on the type of brush strip excluder that is used on doors and windows.  With this type, there is a double row of tight bristles embedded inside a plastic frame.  These are best used on letterboxes, while the basic type of flap is more suitable for use on cat-flaps.  Your cat is unlikely to be impressed by tight bristles.

The interior flap works in the same way as an exterior flap, but in the reverse direction.  Hold it in the required position and mark it up with a pencil before screwing it into place.  The bristly type of excluder is simply screwed straight into place on the inner surface of the door.  In the case of cat-flaps, draught-proof the opening by adding self-adhesive tape around the gap.

Leave a Reply