Custom Blind Fitting Guide

A professional installation doesn't just guarantee a level finish; it ensures that the fixings are appropriate for your specific wall type and that all modern safety regulations are strictly met. This guide covers everything you need to know about the costs, timelines, and technicalities of custom blind fitting in the UK.

What Does the Work Involve?

• Site Survey & Measurement: An expert check of window recesses, checking for "run-out" (out-of-square windows) and identifying obstructions like handles or vents.
• Surface Preparation: Removal of old window dressings and making good any previous drill holes or crumbling plaster.
• Bracket Installation: Precision marking and drilling into lintels or window frames using high-quality wall plugs and fixings.
• Blind Mounting: Securing the headrail or cassette and ensuring the fabric or slats hang perfectly plumb.
• Child Safety Compliance: Installing mandatory safety clips or tensioning devices for cords and chains to meet UK law.
• Testing & Calibration: Adjusting limit stops on motorised blinds or checking the tension on spring-loaded rollers.

Typical Costs

The cost of fitting custom blinds varies depending on the complexity of the window (such as bays or skylights) and the type of blind being installed. Motorised systems and heavy wooden shutters typically command higher labour rates due to the technical setup involved.

Prices generally include VAT. Expect to pay more in London and the South East, where hourly rates for specialist trades can be 20-30% higher than the national average.

How Long Does It Take?

• Standard Roller or Venetian Blind: 30 to 45 minutes per window.
• Bay Windows (3-5 segments): 1.5 to 3 hours depending on the mounting surface.
• Motorised Smart Blinds: 1 hour per window (including hub pairing and app setup).
• Full House Installation (8-10 windows): 1 full working day for a single fitter.

DIY or Professional?

While many homeowners feel confident installing a basic roller blind, custom blinds often require drilling into steel or concrete lintels, which can be difficult without a high-powered SDS drill and the correct bits. If your measurements are off by even 5mm, a custom-made blind may not fit at all, leaving you with an expensive mistake that cannot be returned.

Professional fitting is highly recommended for motorised systems, large conservatory roofs, and any installation involving young children to ensure full compliance with safety legislation.

Choosing the Right Tradesperson

• Look for BBSA Membership: Members of the British Blind and Shutter Association adhere to a strict code of practice and safety standards.
• Check Insurance: Ensure they have Public Liability insurance in case they accidentally drill through a concealed pipe or wire.
• Specialist Tools: A professional should arrive with a laser level, a range of heavy-duty drill bits, and a vacuum to manage dust.

Ask these questions before hiring:

• "Are the safety devices you install compliant with BS EN 13120?"
• "Do you provide a guarantee on the installation as well as the product?"
• "Will you be drilling into the window frame or the lintel above?"

UK Regulations

• BS EN 13120: This is the primary standard for internal blind safety. It mandates that cords must be kept out of reach of children via break-away links or fixed tensioning devices.
• Part P (Electrical Safety): If you are installing hard-wired motorised blinds (rather than battery-powered), the electrical connection must be performed or signed off by a qualified electrician.
• Building Regs (Ventilation): Blinds must not permanently obstruct trickle vents in modern windows, as this can lead to condensation and mould issues.

Common Problems

• Drilling into Lintels: Many UK homes have steel or reinforced concrete lintels. Without the right equipment, DIYers often fail to get a secure fixing, leading to the blind falling down.
• Incorrect Measurements: Forgetting to account for window handles or tiles in a kitchen/bathroom can prevent the blind from lowering fully.
• Fabric "Telescoping": If the brackets aren't perfectly level, the blind will roll to one side, eventually fraying the edges of the fabric.
• Inadequate Fixings: Using standard plugs in "dot and dab" plasterboard walls often results in the blind pulling away from the wall over time.

Frequently Asked Questions

Can you fit new blinds to existing brackets?

It is rarely recommended. Even blinds from the same manufacturer often update their bracket designs, and using old fixings may void your warranty or compromise safety.

Do I need to clear the area before the fitter arrives?

Yes. You should remove any items from the windowsill and move furniture at least one metre away from the window to give the fitter enough space for their ladder.

Can blinds be fitted to uPVC window frames?

Yes, but it requires care. Specialist "No-Drill" blinds (like Perfect Fit or INTU) clip into the bead, while standard blinds require specific screws that won't damage the internal steel reinforcement of the frame.

How do motorised blinds get power?

Most modern custom blinds use internal rechargeable lithium-ion batteries that last 6-12 months per charge. Hard-wired versions require a 240v power supply nearby, usually installed by an electrician.

What is the 'Child Safety Law' for blinds?

Since 2014, all blinds sold and installed in the UK must meet safety standards. This includes limits on cord lengths and the mandatory installation of safety devices to prevent strangulation hazards.