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Core Handyman Services, Chelmsford Handyman / Local Handyman: Specifying and Sourcing Cat Flaps for Block Wall Installations.

Core Handyman Services, Chelmsford Handyman / Local Handyman

J Dillon

9/6/20251 min read

Core Handyman Services, Chelmsford Handyman / Local Handyman: Specifying and Sourcing Cat Flaps for Block Wall Installations.

Core Handyman Services – Practical Solutions for Pet Access Without Compromise

Installing a cat flap in a block wall isn’t a typical DIY job. It requires careful planning, the right tools, and components that suit both the wall structure and the pet’s needs. At Core Handyman Services, I help homeowners across Chelmsford create clean, secure openings that look good and work reliably.

Why Block Walls Need a Different Approach

Unlike timber doors or PVC panels, block walls present unique challenges:

  • Thicker structure requires extended tunnel liners

  • Masonry dust and debris must be managed during cutting

  • Weatherproofing and insulation are critical to prevent damp

  • Precise alignment is needed to avoid internal wall damage

What I Look for When Specifying a Cat Flap

1. Wall Depth Compatibility Standard cat flaps often fall short in deep walls. I source models with optional tunnel extensions or modular liners that can be trimmed to fit.

2. Material Durability For external walls, I recommend flaps made from UV-resistant plastic or aluminium with secure seals to withstand Chelmsford’s weather.

3. Locking Mechanism Depending on the client’s needs, I offer options including:

  • Manual locks

  • Magnetic entry systems

  • Microchip recognition for selective access

4. Clean Finish I use trim plates or custom surrounds to ensure the internal and external edges look tidy and professional.

Installation Process

  • Mark and cut the opening using masonry tools

  • Insert and secure the tunnel liner with sealant or foam

  • Fit the flap unit flush to the wall surface

  • Seal all edges to prevent drafts and moisture ingress

  • Test for smooth operation and secure locking

Why Clients Choose Core Handyman Services

  • Accurate product specification

  • Clean, professional installation

  • Reliable sourcing from trusted suppliers

  • Long-term durability and weather resistance

Whether it’s a basic flap or a high-tech access system, I make sure it fits the wall, suits the pet, and looks right on the property.