a subsidiary of SDL Windows Ltd.

Composite Doors, Bi-Fold Doors and Double Glazed Windows

  • SDL Windows Services
  • Composite Doors
  • Double Glazed Windows
  • Bi-fold Patio Doors

SDL Windows –

Suppliers of Composite Doors, Bi-fold Patio Doors, and Double Glazed Windows and Doors.

Composite Doors

All composite doors are supplied with free delivery to mainland England and Wales, manufactured by Door Stop International using the online design tool. Each door design is processed on-line, and following a successful payment method, your order is sent over to Door Stop for manufacture. Once a confirmed delivery date is scheduled, ordering customers will receive confirmation via email, an expected time from order to confirmed delivery is approximately 1 hour from order (Monday-Friday 9am – 5pm). Most doors ordered have a delivery time scale of 3-5 working days, exceptions to this would be due to ordering  thermal upgraded glass, coloured frames, side-panel and top light glass, or certain detailed glass designs on doors. If unsure please call our team and we will be able to give you exact delivery timescales.

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Double Glazed Windows

SDL windows are manufacturers of uPVC double glazed windows, doors, and French patio doors. Using Synseals Legend 70 Profile, all requirements for replacement double glazing windows units can be manufactured on site. Using the Legend 70 system gives our customers a perfect match to the frame profile used on the Composite door, as Door Stop international uses the same profile system. Please note, we are working on transportation to offer a nationwide supply of double glazed windows, but at present we can’t offer this product over the Web for order. Orders can only be taken on-site. 

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Bi-fold Patio Doors

Coming soon, aluminium and uPVC bi-fold doors, as with our double glazed windows, we are now producing Bi-fold patio doors, but orders can only be taken on-site.

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Cheapest Bespoke GRP Composite Front Door Prices

SDL Windows Ltd is proud to offer the highest quality composite doors at the best prices in the UK. From order to delivery your bespoke design can be delivered in as little as 3 days. Online payment or telephone orders are available, using your debit or credit cards through our secure Sage Payment gateway. Designing your new front or back door could not be easier. Selecting your composite slab design, then to frame and colour, glass to furniture, thresholds to cills, and then down to your required measurements. It’s all on-line and ready. Check the prices now with no obligation to buy or enter personal details.

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bespoke front doors

We offer the cheapest GRP Composite Front and Back Doors Review the UK best Prices

Before making that final step to purchase your new door, use our online designer and review as many bespoke designs each time the system will generate you the UKs best prices possible for these highly secure products (Design Your Bespoke GRP Door Here). Hundreds of reviews a day are finding the cheapest, yet high quality replacement doors, using our quick and easy online price generator. Save money and design a bespoke manufactured composite today. Not only do we have the lowest prices but we also offer free delivery to most parts of England and Wales.

Best Door Stop Manufacturer External Bespoke Composite Doors

Many companies now offer Door Stop International Doors, why?, because they have the balance of quality and price that just can’t be matched. So why choose SLD Windows Ltd, well we are proud not only to offer a great after sales service, having our own fitter at hand, and ready to answer your fitting questions, but we also understand that we are middle men, and for that reason the prices you pay will not be beaten.

Rocal Manufacturers Endurance Stable and Composite Fire Doors

While Door Stop International (D-S) is our primary supplier, to date they do not offer Composite Fire, Stable, or double French Doors, so we are also proud to be in a position to offer Endurance Stable and Fire Composites from Rocal. These unlike D-S Rocal offer a slab that is a Solid Wooden Door, as their name suggests these are like a fortress, ultra secure. We have designated Rocal doors a page to view these bespoke ranges, that offer not just perfect front entrance to any home, but also that added security. Check out these manufacturers products under Fire Doors here or at the top of any page.

From Black to Oak or Yale to Vectis Design Bespoke Composite Doors Online

Whichever manufacturer you decide is best for you home by reviews of their products, you can trust that they are both highly recommended and offer contemporary to traditional ranges, all offer locking systems from Yale or Vectis, colours from Black Composite Doors to Oak, furniture in all colours. The range is not only truly vast they offer suitability to houses to garages, to commercial installation fitters, and don’t forget delivery is free to ALL areas of mainland England and Wales check out your area.

 Also so see

Thermal Efficient Replacement Doors 

Double Glazed uPVC Window Manufacturers

At SDL Windows bases in Stoke-on-Trent we take pride in the levels of service and quality in the products that we supply. Replacing old windows and doors for new quality Double Glazing, and Composite Doors can offers many hidden benefits to home owner’s, not just in the look, but also in the design and security. New Double Glazed Windows, and Composite front Doors offer home owners advantages such as thermal efficiency, reduced external sound, the reduction or even removal of condensation, and not let’s forget the added security.


Installing extra secuirty to your home

Security is a paramount importance in homes today, installing upvc windows with deadlock, shoot-bolts and composite keeps can significantly improve your homes vulnerability.

Unfortunately the topic of security has to take pole position as to the benefits of replacing your windows and composite doors. All our double glazed windows have security casement shoot-bolts where a window opener is required. These lock types stop intruders from prying open the window casements in order to gain entry. The security can also be improved by requesting the glass units to be laminated, so even if the unwanted guest breaks the glass, they would still have to get through the tough laminated film. Our composite Doors security is also second to none. All doors can be supplied with a Police Accredited Certificate, (Secured By Design). The manufacturers are so confident of the high levels of security the these Composite Doors offer, that they Guarantee to pay £500 if your door is broken in and supply you with a brand new Replacement door. Now that’s confidence on a different scale. We also offer a bespoke range of  Fire Doors with 30 minute ratings.

Thermal Efficiency

All Our Replacement Double Glazed Windows are Supplied and Fitted A Rated as standard

Double Glazed Windows will reduce the heat loss from your home, all our double glazed windows are filled with argon gas to upgrade their thermal efficiency

Complex manufactured composite doors and double glazing have great thermal efficiency values as there are either two panes of glass in the glazed units, or the compound doors slab is made from highly thermal efficient materials. The two panes of glass in a double glazed unit from alliance products are filled with a Argon Gas, this added extra at no additional cost greatly improves the units rating, which is why all our windows are A Rated as standard. Using this technique, it is very difficult for different temperatures leave through the glass, this keeps your home warmer in the winter and cooler in the summer. These added benefits help to reduce your fuel bills in both summer and winter, and also reduce your homes carbon foot print.

Reduced Sound

sound reducing upvc windows

The image above shows how better noise is reduced when upvc double glazing is installed into a home

Follow the installation of your new Double Glazed Windows or  Door, you will be unable to notice the reduction is sound from single glazed units and wooden doors. Again the double panes of glass or with the complex door slabs materials, these both reduce sound levels greatly, but if you are looking to get the greatest of sound reduction, then we can supply the glass in both windows and doors which have a lamination film on the inner sides of the units. These laminated units have the best values for noise reductions and also offer fantastic security improvement.

Condensation Reduction and Removal

The reason why many homes suffer from condensation is due to a naturally occurring event, this is when warm and cold air meet, the moisture in the air then condenses at the meeting place (your old window panes). This can cause mould and unsightly black and green patched on your walls and windows. The Double Glazed Windows that we install are A rated, which means that a thermally efficient barrier is in place, not only in the glass as mentioned above but also in the design of the window casements, with these improvements and if required trickle vents, your home can be condensation free.

Bespoke Bi-Folding Patio Doors

Available now to design and order online. We now supply to mainland England and Wales as full range of uPVC and Aluminium bespoke made Bi-fold Patio Doors.

bespoke bi-fold doors

Bi-Fold Designer

Our online design tool allows you to select every aspect of your Bi-folds make-up, from the amount of leaves, the direct of the opening and the single entry leaf. Not only that but you can select the glazing of the Patio doors, handle colour and even threshold. Using our design facility you will also be given a price, so no need to speak with one of our representatives if you’ve no specific questions.

Never have Bi-fold doors been easier to design and order, try out the design tool now.