Product Range FAQ Section

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> Backflow Valve
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FloodShield Door Barrier

Do the Floodshield door barriers require any specialist fitting?
No.  Floodshield has been designed and developed for “emergency use”.  No tools are required.  The barriers come with 8 clips attached and ready for use.  Once the barrier has been purchased we recommend that the owner familiarise themselves with its deployment, and adjust the clips to the depth of the doorframe.

Are there any permanent fixtures that will need to be added to my house for the door barrier?
No.  One of the benefits of Floodshield is that it is totally demountable, therefore does not affect the aesthetics of your property. 

How does the Floodshield door barrier work?
The Floodshield door barrier seals against the outside surface of the existing door frame, or doorframe and step/narrow ledge, and is secured in place with 8 barrier clips that clip onto the doorframe rebate.  The door can then be opened and closed as normal. 

I have a rain deflector that protrudes at the bottom of my door.  Does this affect the fitting of Floodshield?
The Floodshield door barrier design allows sufficient space for a rain deflector, in most cases.  However, on some occasions the rain deflector will need to be repositioned, replaced or trimmed to allow the door to close when the barrier is fitted.  The rain deflector on UPVC doors can be temporarily un-clipped.

How quickly can the Floodshield door barrier be installed?
The Floodshield door barrier can be installed in just two minutes.  However, UK Flood Barriers strongly advises that owners familiarise themselves fully with the product upon purchase, and pre-adjust the clips to suit the depth of their doorframe.

If I have an unusual size opening on my property am I able to get a barrier?
Yes.  While our standard Floodshield door barriers fit door widths between 770mm (30 1/4“) and 970mm (38 ¼”), we also offer Waterdoor and Flood Angel® Flood Defender™ barriers for narrower or wider apertures.  These either comes in standard widths or can be made completely bespoke. 

Backflow Valve

What is the backflow valve?
The backflow valve is a non-return valve designed to prevent sewage and waster matter surging back through the sewage system and into properties. 

How does it work?
Its “normally open” design enables solids and waste matter to flow freely and unrestricted through the valve.  In the event of water surging back through the pipes or in flood conditions, the backflow automatically lifts a gate within the valve which shuts against a neoprene gasket seal and prevents backflow past the valve. 

How is the backwater valve different from the backflow valve?
The backwater valve is in a normally closed position, whereas the backflow valve is in a normally open position.  The backwater valve is rodent-proof.

Where is the Backflow/Backwater Valve fitted?
The valve is fitted in the main drain or branch closest to the property.  The valve is supplied with complete fitting instructions. 

Does it need any maintenance?
The backflow valve is virtually maintenance-free and only requires periodic inspection.  The units have a built-in main sewer cleanout point, eliminating the need to an adjacent rodding eye. 

What size does it come in?
The backflow valve comes in standard 100mm European and 4” US size.  This is a standard size for use in the UK.  However, a reducing coupler can be used with this valve if pipework is non-standard.  This can be purchased from UK Flood Barriers.
The Backwater valve comes in two standard sizes: 110mm and 160mm.

Will I need an inspection chamber?
Yes.  This can be purchased from UK Flood Barriers.  We do two types of inspection chamber: one suitable for soft landscaping, to accept foot traffic; and one suitable for driveways, to accept a weight of 12.5 tonnes.  We also sell incremental risers which are sometimes required depending on the depth of the sewage pipe.  

Flood Angel™ Airbrick

What is so “Innovative” about it?
The Flood Angel™ Airbrick is a “fit and forget” airbrick replacement.  Its innovative design essentially acts as a standard airbrick, allowing unrestricted airflow underneath the property.  Under flood conditions it uses the rising water to automatically shut off as the gate rises to block off the airflow gaps.  During strong gusts of wind the Flood Angel™ Airbrick is also automatically activated, temporarily blocking off the airflow gaps until the wind recedes, assisting heat retention within the property.

What material is the Flood Angel™ Airbrick made of?
The brick is manufactured from tough recycled polypropylene .

How is it installed?
The Flood Angel™ Airbrick is a straight replacement for a standard airbrick.  The old airbrick will need to be removed and then the Flood Angel™ Airbrick is inserted and fixed in place using Mastic; it is then pointed using a sand and cement mix.  UK Flood Barriers can install replacement airbricks for you; please contact us for a quote.

How many will I need?
You will need one Flood Angel™ Airbrick to replace each traditional airbrick on the property

What is the difference between a Flood Angel™ Airbrick and a Flood Angel™ Airbrick Cover? 
The Airbrick Replacement is a straightforward replacement for the traditional airbrick and has the advantage of being “fit and forget”.  The airbrick cover requires fitting every time there is a flood warning, and removal after the threat has subsided, however they are cheaper. 

Waterdoor

How is the Waterdoor barrier different from the Floodshield door barrier?
The Waterdoor is manufactured from aluminium.  It comprises aluminium panels which are 200mm high, and side rails which are permanently fixed either side of the doorway.  The barrier can be manufactured completely bespoke or supplied in standard sizes up to a height of 1200mm. 

How does Waterdoor work?
Waterdoor makes use of two vertical channels (side rails) that are fitted at either side of the door entry.  These allow the lightweight, individual aluminium panels to be dropped into position.  Each panel has its own rubber seal, that, when compressed by the Waterdoor fixing sequence, forms a completely watertight barrier. 

Can I use the Waterdoor barrier to protect my patio door?
Yes.  Waterdoor is ideal for protecting wider openings such as patio doors.

What is the maximum height for the Waterdoor Barrier?
The maximum height of Waterdoor is 1200mm.  It can be supplied in height choices of 200mm increments, ie: 200mm, 400mm, 600mm, 800mm, 1000mm and 1200mm, depending on your requirements. 

Is Waterdoor easy to deploy?
Yes.  Once the side rails have been fixed by either one of our installers or by a competent builder, the panels simply need to be slotted into place, ensuring that they are done so in the right order.  This should take just a matter of minutes.  Again, we recommend that customers familiarise themselves with the components of the barrier in advance of a flood warning.   A full set of instructions is supplied with each barrier.