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Composite Door

Composite Door

What is Composite Door?Check

Well – there are many different varieties of composite doors on the market all constructed with different materials which is why it can be so confusing. Here at Merlin we look at all products from a technical standpoint and have to be completely satisfied with them before we offer them to our customers. We believe that the best composite doors are made using fibreglass for the surface of the door because it is the most stable in all weather conditions. The PVC frame that the door is housed in has to be a proper dedicated composite door frame that has been purpose designed for that job and has the necessary weather seals in the right place to keep the worst of the British weather outside where it belongs! It has to have a low threshold too so that there are no trip hazards. High security locks are standard these days but our door has to have the best possible German lock systems fitted. It has to have a wide range of styles to suit most homes and a range of traditional colours. The door has to have glass designs which are in keeping with the door style and the ability to choose the glass design that you want. The door also has to be made to the highest manufacturing standards too.

Once we have all these criteria met only then will we offer that door to our customers.


We don’t believe in compromising on quality.

We’ve brought together materials to give you the very best in strength, easy maintenance, security, and weather resistance. Oh – and great looks as well.

Our composite door is thick – but it’s also very smart. In fact it’s 44mm thick (compare that to conventional pvc panel doors at 28mm). And powerful too, thanks to its super-strong structure.

A structural frame and up-to-the-minute hardware makes our composite door even more secure. Its GRP finish means you’ll be secure in all weathers.

And enjoying great looks for years to come.

Home & dry

Showers…storms…drizzle…We hate to break it to you, but the average rainfall in the UK is between 70mm a year in East Anglia and 300mm a year in the Scottish Highlands*.

That’s a lot of potential for leaks, puddles or even worse.

But we’ve designed our doors to withstand even the heaviest downpour.

The doors are tested by the BSI by spraying two litres of water every minute directly at the door in their test chamber. That’s a serious amount of rain.

So even when it’s cats and dogs out there, your door will keep you snug and dry.

For when its definately not kite flying weather

We can’t tell you what’s going to happen next. But we can make sure your door is fully protected against extreme weather conditions. Our doors are tested in a pressurised chamber to simulate gusting winds. The tests start at 500 Pascal – 63 miles an hour. Then the BSI turned those gusts up to the equivalent of 80 miles an hour (800 Pascal). That’s stronger than a hurricane.

But we weren’t quite content with that though. Because we want our doors to be fully prepared – like the Boy Scouts. So we took our in house test rig to over 100 miles an hour. The door remained unchanged!

We’re not psychic. But we can predict your composite door will keep you protected in all weathers.



Benefits Merlin Composite Doors PVC Panel Door
Solid 44mm thick door leaf Yes No
Big choice of colour options Yes No
GRP moulded grain in all colours Yes No
Aluminium lock face plate for strength Yes No
Colour fast GRP skin Yes No
Hidden external gaskets Yes No
Door leaf fits flush into frame Yes No
Lock is secured in timber surround of door leaf Yes No
Multipoint locking facility Yes Yes
Low maintenance Yes Yes
Colour matched door frame Yes as an option Optional
High security cylinder Yes Optional
Colour coordinated door drip Yes as an option Optional

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