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Energy Saving Products

A+ rated window & doors

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Competitive Prices

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Qualified Team

Strict industry standards

Our high security double glazing hardware explained

  • Espag window locking system

Espagnolette locking systems are the most common window locking mechanism for double glazed uPVC and aluminium windows. Recognised by their distinctive modern flat strip shape, as the key is turned it works in harmony with secure multi-point locks positioned around the frame to firmly lock and release the window with ease.

  • Cockspur window locking system

Cockspur handles are more suited to traditional and heritage improvement projects, often where slimmer frames are required. Two pieces, rather than multi-point ready, its simple latch and catch design closes onto or into the latch and locks the handle in place.

  • Monkey Tail & Pear Drop handles

As well as a choice of bespoke, dummy, and working butt hinges, Residence Collection windows can be enhanced further with classic 19th Century Regal Monkey Tail handles or heritage Pear Drop handles, available with locks or without locks depending on the project.

All of our window locks and handles are tested to the highest technical standards, along with a comprehensive 10-year mechanical guarantee for complete peace of mind.

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monkey tail window handle
door handle lock

Our door hardware explained

  • Multi-point door locks

Each door style we install is secured with quality hook multi-point locking mechanisms, robust hinges, and 3* cylinders as standard.

  • Composite door security

Our 44mm GRP composite doors from Hallmark and Residor have the proven ability to achieve the industry-enhanced security standard Secured By Design & PAS 24 2016. Lightweight GRP (Glass Reinforced Polyester) is used for building and repairing boats, so it's an ideal material for solid external door replacements.

Our 48mm timber core ABS composite doors from Solidor are 10% thicker than the nearest competitor. Solidor composite doors can also accommodate the UK's more secure locking system - the Ultion Lock - which is capable of sensing an attack and preventing intruders from gaining entry by engaging an innnovative hidden lock within.

All of our door locks and handles are tested to the highest technical standards, along with a comprehensive 10-year mechanical guarantee for complete peace of mind.

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More window & door security terms explained

  • Shootbolt locking

Shoot-bolt locking secures bifold door panels, sliding doors, and French doors firmly into place. Also used as a double glazed window lock, shoot bolts extend inwards or outwards at the top of the window and bolt it securely to the outer frame.

  • Window restrictors

Window restrictors prevent windows from opening too far, protecting curious little ones from falling out and getting seriously injured. Allowing for partial opening allows for secure ventilation too.

  • Internal glazing beads

All of our windows come with secure internal glazing beads as standard, to prevent opportunist burglars from lifting the glazing out and getting inside.

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opening aluminium window

What do our customers say?

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Friendly and Professional

We moved into a 4 bed town house a couple of months ago and had all the windows and doors replaced. The co owner Mark, came out and offered great advice on the options available. They installed everything on time in a Friendly and professional way and were approachable/helpful if there were any issues that arose. They were always clean and tidy. We would wholeheartedly recommend Double Glazing Direct Limited to anyone.

Buckinghamshire, 11/06/2022

Which? Trusted Trader

Excellent work with quality products

I have use Marc several times, some professionally and also personally. Marc has always communicated with me well regarding delivery of product and installation. He is alway courteous and very professional, the product quality he uses are extremely good and he is an excellent fitting leaving you with a very high quality finish. Excellent would definitely use him again if required.

Buckinghamshire, 23/10/2021

Which? Trusted Trader

Great Work, Professionally Done

The whole team who carried out the work were excellent. Diligent, courteous and professional, they performed a standout job, from initial quote through to completed work. Couldn’t recommend them enough, and we are extremely happy with everything.

Buckinghamshire , 25/11/2021

Which? Trusted Trader

Outstanding Service

We had many issues trying to locate a company to replace our conservatory roof however, this company was recommended to us by a friend of a friend and we couldn’t be happier. It was really refreshing to have a company not place any pressure for a sale; always available to answer any queries; worked incredibly quick and professionally throughout with a friendly manner. We are so impressed with the service received, that we have now booked them again in May to have our windows replaced.

Buckinghamshire, 02/05/2023

Which? Trusted Trader

‘Double Glazing Direct’ were brilliant.

They were extremely polite and professional. Before they started the work on the day of installation, taking out the existing windows, they prepared the area with dust sheets and special protective flooring on our wood floor and stairs. The fitters were skilled knowledgeable and focussed. There was no mess made during the installation. The quality of the product and installation was excellent. I love my windows and I will always recommend ‘Double Glazing Direct’.

Greater London, 15/09/2023

Which? Trusted Trader

Great job, professional service

Replaced an old aluminium frame patio door with updated upvc doors. Work undertaken very professionally, leaving the area clean and tidy afterwards. Noticed a very slight imperfection upon completion but this was rectified quickly and efficiently. Thank you to the entire Team. I would recommend Double Glazing Direct to anyone. Brilliant service from start to finish.

Buckinghamshire, 15/09/2023

Which? Trusted Trader

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