https://blogfreely.net/mirrorburma97/cat-flap-installation-how-to-choose-and-install-a-cat-flap https://yamcode.com/how-much-does-a-cat-flap-cost-72 https://telegra.ph/UPVC-Door-Panel-With-Cat-Flap-10-27-11 It is possible to install an animal flap into a upvc door panel or double glazing glass sealed unit, although the best option is to have a new glass pane that has an already-made hole. Read the instructions that should be included with your cat flap kit and follow them with care. Make sure that the shape you have drawn (be it circle or square) is accurately depicted on your template drawing. Safety If you have a dog or cat and want to allow them access to the garden without leaving the door open, a microchip-activated pet flap inside your door's upvc panel is a great option. It will allow your pet in, preventing other animals and pests from coming inside. It also prevents burglars from getting through your door by locking them out. This type of security is crucial when you have children, are old or reside in a burglary-prone area. The installation of a cat's door into a solid uPVC is a fairly easy task that can be accomplished by anyone with basic DIY skills and experience with tools. You can use a jigsaw cut the hole that you require however it is essential that you make sure that the flap is big enough for your pet and that it is set at an appropriate height from both the outside and inside of the house. If your door is made from a composite material it is a good idea to speak with the manufacturer prior to making any alterations to avoid invalidating the warranty. Certain composite doors have raised decorative elements that are difficult to cut, and special provisions may have to be made where these protrusions are present. It is also an excellent idea to apply some weatherproof sealant to the bare sections of timber that have been exposed after cutting, since this can help prevent moisture and rainwater soaking into the wood, causing it to rot. If you have a