Call us: 01732 848088

Flush thresholds on patio doors

A low or flush threshold on patio doors is a desirable feature whether you’re looking at replacing your old patio doors or choosing the best doors for a new extension. In this article, we explain the various options for getting that desired look and feel with a low or flush threshold.

flush threshold on patio doors

Getting the perfect flush threshold on patio doors

First of all, it’s worth knowing that the standard threshold on our frameless slide and stack doors is just 5mm when sunk into the floor. It’s less than most other aluminium bifolding or sliding doors on the market. Many of these start at 15mm tall. There are even system where the low threshold version is only suitable for internal use.

Our advanced, highly secure, energy efficient and fully weathered doors we’ve designed to give you the best patio door solution in your home. The threshold on our doors we think is one of the best and certainly one of the lowest.

But it’s also fully weathered and wheelchair friendly. Therefore our patented frameless glass doors give you the neat and consistent sightline. And they come with the smooth transition to your patio area or garden. Of course, our own design gives you the flush look and the ability to have your internal flooring matching up with your decking or slabs on the outside.

How patio doors tracks and thresholds work

With most door brands and systems the track or threshold offers a standard installation solution or one where it’s set into the floor for a lower line. Correctly fitted, it not only creates the desired flush look but also ensures your doors remain weathertight when closed.

A good set of doors provide all the weather protection you need and the design also allows effective drainage of water to the outside. Most of our customers choose our frameless doors for their new extension. This is where we at FGC work with you, your builder or architect early on in the planning and design stage.

If you’ve yet to build your new extension, plan early. When all parties involved in your project work together, mistakes and delays are avoided. We provide your builder with either drawings, information or even a sample of the track. Knowing the makeup of our doors before they arrive lets your builder create the correct opening.

Why drainage is important on patio door thresholds

How water drains to the outside is one of the crucial design features when planning a flush threshold on patio doors. On a standard installation, the doors sit on a cill. As the rainwater runs down the glass and frame, it lands on the cill. The projecting nature of a good cill deflects the water away from the doors.

On a low or flush version, it’s often the case your builder creates a suitable drainage area at the front of the doors. Again we frequently work with builders providing useful details of how our doors drain and what needs doing with the structure and exterior area in front of the door track.

In order to get the best result and no risk of leaking, drainage planning is essential. This also helps you and your builder understand the relationship of inside and outside flooring and their relationship to the threshold on your patio doors.

You’ll benefit from excellent weather performance, sealing the door at the critical flush threshold and all around the doors too.

Tips and Advice for getting the ideal patio door flush threshold

  • For new extensions, plan early and before work starts building the door openings.
  • Ensure you and your builder have an understanding of the door track. Every door is different and there’s no one size fits all approach.
  • Remember, bifolding and sliding doors don’t have the same design at the bottom track.
  • Do get to see your chosen doors fitted. It’s the best way to understand how to get the look you want.
  • Make sure your various trades are aware of the inside and outside finished floor sizes and dimensions.
  • The bigger the door opening, the more challenging for this to be 100% level and square.
white patio doors with flush threshold

Let our transformational glass doors create the perfect modern room

Whether you choose our standard doors or even an open corner design, our doors promise a stunning new room with that smooth garden access thanks to our super low threshold.

We’ve also got a great section with all the common questions about our unique product. Or why not get in touch and discuss your property improvement project with us. At FGC our doors give you the perfect exterior patio door. You can even use them inside the home as stylish room dividers too.

FINANCE OPTIONS AVAILABLE

What our customers say

Replacement doors

I had been looking for some time to replace my patio doors in our lounge as they had very wide plastic frames and wanted something that wouldn’t restrict the view up the garden I asked to see if it was possible to view some already installed close by. Luckily there was, we went and viewed

Paula Sanders
Paula

Mr M B @ Praa Sands, Cornwall

We wanted to connect two room – a ‘sun room’ and living room -by replacing a large window with some glass doors. We contacted local suppliers and Googled ‘glass partitions’. Local suppliers weren’t much help, however the Google came up with just what we wanted – frameless glass doors. We contacted Gary for a price.

Small maintenance issue

We had a small issue with the opening door, we contacted FGC and they arranged for a team to come. They sorted the issue very quickly then cleaned the runners and door seals, fully tested the operation of the doors and carried an additional mod on the door handle. All done and dusted with an

Keith Delderfield
Keith and Di

Hugely impressed by your level of service.

I just wanted to say that I remain hugely impressed by your level of service. The two chaps who came out to service our doors were once again marvellous.  They are very polite and clearly very skilled. It’s very easy these days to complain and sometimes it’s nice to pass on credit where it is

Mrs M @ Beaumont Close London SW15

We were very happy with the service offered from start to finish. The frameless glass doors are a perfect solution to our extension and have received many compliments.The workmen who installed the doors were courteous and efficient, the job completed in a few hours, we had a slight problem that needed attending to and this

I am very happy with the doors

I am very happy with the doors – I saw them last night after work – though I didn’t open them as I wanted to make sure I followed the installers’ instructions not to. They look wonderful and my boyfriend and mum tell me they were absolutely lovely chaps. The finish seems brilliant and appears to

Mr H B @ Kingston

I am absolutely thrilled with the finished result. You were straightforward to deal with and visiting your site was appreciated. You gave clear statements regarding specification and developed the product to meet our needs. Installation was at the agreed time and there was reassuring and prompt follow-up as the new design needed refining. The product

Work ethic simply cannot be doubted

Can I also thank your fitting team for turning out in atrocious weather that day, their work ethic simply cannot be doubted, please pass on our thanks to them and everyone involved for the service we have received. The doors look fantastic and we hope to add a third set, perhaps later this year.  

Mr and Mrs W

What an Experience!

We were recommended to use FGC by our builder and one of us visited a client who had recently had his installation. We have been hampered with delays regarding our lounge where the doors were being installed so it was refreshing to have FGC arrive at 8am and be finsihed installing and waiting for a

Michelle Michael and Peter Angelides
Peter and Michelle

Very pleased with the glass

Very pleased with the glass curtain doors which you supplied on time
and installed very quickly. Great product that really enhances the room

Brian Berg
Brian Berg

Great Product and great service

I can not fault the FGC team and most importantly the doors! We love our new Frameless Glass Curtains. We had a few delays on our project and adjusting the install date was never any problem for FGC.
Couldn’t be happier!

Matt Hodgson
Matt H

Mr PM

We chose FGC because we wanted something unique to connect both garden and our new room. Unique design, simple flawless construction, ease of use and durable construction all fit perfectly with what we wanted. FGC further enhanced the fit with great service and on site installation, answering any further queries we had very quickly. 20150112

Published on January 2, 2021

Other articles you may like