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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.
