Install a communal dish.

Whether you are a freeholder looking to upgrade a building or a leaseholder coordinating with a management company, understanding the technical requirements and costs is essential. A professional installation ensures compliance with local planning laws and provides a future-proof solution for Sky Q, Freesat, and international satellite services.

What Does the Work Involve?

• Site Survey: A technician assesses the roof or wall for a clear "line of sight" to the southern sky, ensuring no trees or buildings obstruct the signal.
• Mounting: Installation of a high-grade communal dish (usually 60cm to 80cm) using heavy-duty galvanised brackets and fixings.
• Cabling: Running high-quality coaxial cables from the dish to a central distribution point, typically located in a plant room or loft space.
• Multiswitch Installation: Fitting a multiswitch unit that splits the signal and amplifies it to ensure every flat receives a perfect picture.
• Internal Connection: Routing cables to individual wall plates within each flat and testing the signal strength (dBm) and quality (MER).
• Commissioning: Final alignment using a digital spectrum analyser to lock onto the correct satellite transponders.

Typical Costs

The cost of a communal system varies significantly based on the number of "points" (individual connections) and the complexity of the cable runs. Prices below include VAT and high-quality materials for 2025/26.

Costs are driven primarily by "containment"—the method used to hide cables (such as trunking or internal ducting). In older UK conversions where cabling must be retrofitted externally, labour costs are typically higher due to the need for scaffolding or specialist access equipment.

How Long Does It Take?

• Small conversions (2-4 units): 1 working day.
• Medium blocks (5-15 units): 2 to 3 working days.
• Large purpose-built developments: 1 to 2 weeks, depending on existing ducting.
• Emergency dish realignment: 1 to 2 hours.

DIY or Professional?

Communal satellite installation is strictly a professional task. Unlike a single-home setup, these systems involve complex signal balancing and "Working at Height" safety protocols. Furthermore, most leasehold agreements and block insurance policies require work to be carried out by a certified contractor to ensure the building's structural integrity and fire safety (especially regarding cable penetrations) are maintained.

Professional installers use digital signal meters costing thousands of pounds; a DIY "satellite finder" is insufficient for balancing a multiswitch system serving multiple homes.

Choosing the Right Tradesperson

When hiring an installer for a shared building, look for specific credentials that prove they understand communal infrastructure.

• Qualifications: Look for CAI (Confederation of Aerial Industries) Plus membership or SafeContractor approval.
• Insurance: Ensure they have Public Liability insurance of at least £2 million (many management companies require £5 million).
• Red Flags: Installers who don't mention "signal levels" or "multiswitches," or those who suggest using cheap, non-shielded cable.
• Questions to Ask:
  • Are you "Working at Height" certified and do you have your own ladders/cherry picker?
  • Will the system be Sky Q compatible (Wideband LNB or dSCR multiswitch)?
  • Can you provide a signal test report for every flat upon completion?

UK Regulations

• Planning Permission: Under "Permitted Development," most blocks can have two antennas, but they must not exceed 100cm. Listed buildings or Conservation Areas always require prior consent.
• Working at Height Regulations 2005: Contractors must use appropriate safety gear; if the roof is inaccessible, they may require a cherry picker or scaffolding.
• Part P (Electrical Safety): While satellite signals are low voltage, the multiswitch requires a mains power connection, which should be installed by a competent person.

Common Problems

• Water Ingress: Poorly sealed cable entries can lead to damp inside flats. Professional installers use "drip loops" and silicone-sealed entry holes.
• Signal Imbalance: If the multiswitch isn't adjusted correctly, the flat closest to the dish may get too much signal (causing "clipping"), while the furthest flat gets too little.
• 4G/5G Interference: Mobile masts can bleed into satellite frequencies. High-quality "Class A" shielded cabling and LTE filters are required to prevent picture breakup.
• Sky Q Incompatibility: Older communal systems often don't support the Wideband technology Sky Q requires. Upgrading the multiswitch is usually necessary.

Frequently Asked Questions