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Frequently Asked Questions

Are your products easy to install?

No. We manufacture industry leading specialist products; therefore, we would never recommend a DIY installation.

We do offer a Supply Only Service where the products come complete with a fitting instruction manual. These instructions ensure that installation by a skilled tradesman is possible, however, if they are unsure of the term ‘toe and heeled’ or have little to no experience with fitting aluminium products we highly recommend allowing our fitters to install your doors – this also means longer and more comprehensive guarantees.

How secure are the doors?

Very, as well as being internally glazed, our bi-folding traffic doors operate with a multi-point lock and all remaining panels benefit from a shoot bolt system which secures both the top and the bottom of the door. All gearing on the doors are completely concealed and aluminium is extremely strong by nature meaning it is much harder to force or be prised open than a product made of UPVC or timber.


All our sliding door systems also benefit from multi-point locking points including interlocking profiles and anti-lift blocks. Both our sliding and bi-folding doors pass the same stringent security tests so both products are as secure as each other. Our entire product portfolio complies to PAS24/2012, the most up to date security test for the industry and we continue to strive to improve the security on our products at any possible opportunity.

Are all of your products bespoke?

Yes, every door, window or roof system we manufacture is made to suit client and site specific requirements. We do not offer any standard size products as it is much simpler for us to cut aluminium profile than it is for architects and builders to work around a set size, and as our lead times are so short your project won’t be held up.


Whilst there are some slight restrictions on systems due to glass weights, everything we do is tailored to you.

When should I look to involve Express in our project?

Generally, the earlier the better!
As manufacturers of high quality glazed products we can offer advice on what solutions are available from our own product portfolio to suit various design ideas, at any point in a project. This allows you to incorporate the best products to suit your design right from the very beginning.

Our services do not extend to architectural design of properties or construction work, so whilst we can happily provide options for our own products, the final building’s design, planning permission, and building regulations drawings will need to be completed by an architect.

At what stage do I need a site survey?

In order for us to carry out a site survey ideally your openings will need the steel/RSJ in place and your finished floor level will need to be clearly marked. This will allow us to carry out your site survey as we will know exactly what to measure to. It is possible to carry out a survey without the opening being ready however the manufacturing sizes will need to be agreed and signed off before manufacture takes place.

What is the maximum height for your bi folding doors?

The XP View can be manufactured up to 3000mm high, and our XP10 system can go up to 2400mm.

How many panels should be in my bi folding door?

Although the XPView can go slightly larger, the general rule of thumb is that the largest panels should be 1000mm wide. We always recommend the minimum amount of panels possible within a run of bi-folding doors as this improves the overall aesthetic of the door due to maximising the glazed area. This is also a more cost effective option as the additional components in each panel does have a heavy impact on the overall price.

How many panels should be in my sliding door?

We strongly recommend the minimum panels possible; this then creates large glass areas which can slide aside – they can be made in 2, 3, 4 6 or even 8 panel set ups capable of spanning extremely large spaces.

What is the maximum height for your sliding doors?

The maximum height of our XP Glide sliding doors is 2550mm, 2700mm for the XP Glide R and 3000mm for the XP Glide S – the slide panoramic is our most restricted at 2500mm.

What guarantees do you offer?

All of our products come complete with a comprehensive warranty. We offer a full five-year warranty on all integral blind products and a full ten years on our doors, windows, roofing systems and double glazed units. Our powder coating aluminium benefits from a 25-year warranty (ten years in locations next to the sea).

Unlike many of our competitors, our warranties are comprehensive with no disclaimers in the small print, if we install your products we fully guarantee for years meaning you benefit from our unparalleled after sales service.

If a job is done on a supply-only basis, Express still guarantee the manufacture of the products, however cannot guarantee the quality of a third party’s installation work, meaning if anything hasn’t quite gone how you would like it we can come out to asses a third party’s work for a small charge – but if you’re having an issue your first point of contact should be the person who installed the doors/windows.

Are the doors top or bottom hung?

All of our products (sliding doors, or bi-folding doors) are bottom running meaning there is no weight in the head of the doors.

The doors being bottom hung is of great benefit because the doors themselves will not cause any deflection in the steel above, nor will they snag at the slightest deflection in any steels as is the case with top hung systems.

Are your products suitable for commercial use?

Yes, we have a range of products which have been designed for commercial applications. The design of our products is such that they can be guaranteed for years of use even in commercial environments with heavy usage.

We have a dedicated trade and commercial division so click here for more details.

Can I choose the colour or finish of the doors?

Yes, we offer RAL 9016 white, RAL 9005 black, RAL 9007 light grey and RAL 7016 anthracite grey as standard colour options.

After that there over 200 RAL colours to choose from, as well as dual colour options, and wood grain & metallic finishes, and even some of our own Unique Essence and Elite colours.

Can I have a completely level threshold out to my patio?

All our systems allow for a flush finish to internal floors, meaning no step up to get out to your garden / patio.

Our sliding systems can allow a completely flush finish between internal and external floors (providing adequate drainage is in place) to ensure bi-folding doors are weather tight, a small rebated upstand from the internal to the external is recommended to guarantee years of trouble free use.

How energy efficient are your windows and doors?

All of our products are very thermally efficient; they meet and exceed all current and planned future building regulations.

All our products are thermally broken and benefit from high performance double glazing with a U Value of 1.1 as standard. The maximum overall U value of any of our products is 1.6 and 1.5 in our windows, with many of our door and window products boasting even lower U values.

What's the difference between PVC bi folding doors and aluminium bi folding doors?

Aluminium bi-folding doors are:

  • Better looking
  • Smoother to operate
  • More reliable
  • More durable
  • Extremely secure
  • Thermally broken, giving high performance European weather ratings

UPVC folding doors are less secure and much more prone to failures such as jamming, especially on larger door systems and they offer no comparable weather ratings.

Aluminium is much slimmer and stronger than UPVC, it also doesn’t expand and contract in the heat and cold like plastic products do.

Do you sub contract any of your work?

No, all of our staff are employed by Express Bi-folding Doors; this is why we can always assure you of a job well done. Our surveyors and installers are experts in their field and take great care throughout all of their works. It is this reason why we can offer unbeatable warranties, it also means we take full responsibility for all aspects of our works and you won’t ever be stuck in the middle of an argument between a sub-contractor and the manufacturer as is the case with many of our competitors.

Is the coating suitable for a marine environment?

Yes, our aluminium products are powder coated which is typically commercial application guaranteed for 25 years. Installed at a location within five kilometres from the sea this will reduce to around ten years but a specific guarantee can be given dependent on the site location.

In a marine environment, such as a home on the coast, the salt in the air can corrode the powder coating. To alleviate this we ‘marine grade’ the powder coating which is a slightly different grade of coating and we also treat all corners, joints, and mitres during manufacture to prevent any corrosion, this coating and treatment guarantees the coating even in the harshest coastal environment.

What are your current lead times?

Our lead times fluctuate throughout the year. Our company ethos is to manufacture and install/deliver all of our products as quickly as possible.

Because all manufacturing takes place in-house we control all aspects of your project so even in our busiest times we will always have your works complete within weeks and not months.

Our sales staff can always advise accurately at the point of order what our lead time is likely to be on your project.

Do you cover the whole of the UK?

We service the whole of mainland UK. We are happy to undertake installations anywhere within mainland England, Scotland or Wales.

Any overseas projects we are happy to deliver to mainland UK ports, but unfortunately cannot cater for the shipping of goods.

Can I choose my finishings such as door handles or are they standard?

The handles are standard on each door and window system, but they all have a range of colour options visible in our showrooms.

Our hinges and gaskets used are always made in black, regardless of frame colour due to the quality of material of gasket.

Will you rip out and take away my existing doors and windows if replacing them with your products?

Yes, we are happy to take on all works, including small building works for an extra fee – to ensure we can quote this accurately please provide our sales team with imaging of what needs to be taken away.

If we’re removing products we will also issue a certificate from Certass offering a 10-year insurance backed guarantee on our work.

Why should we use Express?

This is a question asked to us by virtually every client either over the phone, or on an exhibition stand – fewer clients ask this when visiting our showrooms in Leeds, Redhill or Glasgow as it becomes clearer the quality of the works completed by ourselves are at the very forefront of the market.

If it’s not possible to visit us (which we would highly recommend doing) the following are a few reasons we feel we are the best in the business:

  • We are a family run business, with traditional values that have reached a size large enough to cater for the entire UK, but still offer our personal touch throughout every project.
  • We have a vast product portfolio, allowing us to offer a solution for every kind of project.
  • In-house fabrication – we quality control everything we manufacture, and there are no third parties involved in our fabrication, meaning we can guarantee the quality of everything we produce.
  • Confidence in our ability to manufacture to the highest standard, backed by a 10-year manufacturing guarantee.
  • Impressive lead times, supported by over £1 million worth of stock in our warehouse at any one time.
  • Largest fleet, stock holding capability (fabricators, installers, engineers) of any company within the industry.
  • Continual investment back into the company, finance and resources are poured back into the business to continually improve what we do, rather than feeding stakeholders or investors.
  • Products manufactured using the best CNC machinery in the world, eliminating human error and engineering our products down to a fraction of a milometer.
  • Dedicated customer service department happy to assist with any issues and a dedicated aftersales service offering our clients years of peace of mind after the installation is complete.

We are sure that no other company offer what Express offer, on a national scale and have such an extensive product portfolio as Express and in our 10 years to date can boast thousands of happy clients and a stunning project portfolio a selection of both can be explored here.

Opting to use Express might not be the most cost effective solution, but as the biggest and best in the industry, we feel we offer the best value for money on the best service out there.