TECHNICAL
PERFORMANCE
VELFAC
VELFAC windows & Doors are tested to extreme weather conditions, ensuring they can perform in the harshest conditions. Each system is tested for water tightness, wind resistance and repeated operation.
RATIONEL
Rationel – Rationel Windows & Doors are designed to be high performance, secure and long lasting. They are tested for wear & tear, security and weather resistance.
Frequently asked questions
Please find our most frequently asked questions, if you are unable to find the answer to your question here, please
contact us : aftercare@adwscotland.co.uk
Where can I view your products?
You can view our products at our showrooms in either Cumbernauld or Sauchen, please contact us to arrange an appointment.
Cumbernauld showroom opening times
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Monday |
08:00 – 16.30 |
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Tuesday |
08:00 – 16.30 |
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Wednesday |
08:00 – 16.30 |
|
Thursday |
08:00 – 19:30 |
|
Friday |
08:00 – 15.30 noon |
Sauchen showroom opening times
|
Monday |
08:00 – 16.00 |
|
Tuesday |
08:00 – 17.00 |
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Wednesday |
08:00 – 17.00 |
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Thursday |
08:00 – 17.00 |
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Friday |
08:00 - 15.30 |
Alternative showroom visiting times, such as, a Saturday may be available upon request.
Will your products suit my house style?
We have products to suit both traditional and modern house styles, visit our product pages for more information or join us at one of our showrooms
How do I get a quotation for windows and doors for my project?
Our product ranges are bespoke for your project.
If you have plan and elevation drawings or a window schedule prepared then please forward this along with your specification requirements to mail@adwscotland.co.uk.
If you are refurbishing your home or uncertain of which product range works for you or how to take sizes to allow us to provide a quotation then please contact us for assistance on 01236 780022 or 01330 828641. Alternatively, email mail@adwscotland.co.uk.
Architectural Doors & Windows Ltd would be delighted to be part of your journey to creating your dream home.
Do you stock standard sizes?
All of our Products are completely bespoke and made to measure to suit your project, we do not stock standard sizes. If you would like an idea of cost we can provide a free quotation for your project, please contact us at enquiries@adwscotland.co.uk
Can I buy these windows and doors directly from the manufacturer?
No, Architectural Doors & Windows Ltd are the exclusive suppliers of VELFAC and Rationel in Scotland. If you are interested in any of these products, why not visit us at one of our showrooms, we would be happy to discuss your project requirements.
Do you offer installation?
We operate on a supply only basis and no longer offer an approved installer network. However, we’re more than happy to support your chosen installer with technical guidance, product information, and best practice advice throughout the process. All our product ranges come with comprehensive installation guidance, including detailed instructions and technical documents to ensure your installer has everything they need for a smooth and successful fit. If you or your installer has any questions at any stage, our team is always on hand to help.
What product warranty period do you offer?
Our Products have differing warranties ranging from 5 years for doors to 12 years for windows, please visit our product pages for more information on specific product range.
How can I be sure my windows & doors are secure?
SBD is a police initiative to "design out crime" to create a safer and more secure environment. Our Rationel and VELFAC product ranges have achieved Secure by Design standard, therefore you can have peace of mind that your windows & doors will be safe & secure.
How do I report an issue with my products?
Customer satisfaction is key to our business. We have an excellent team dedicated to resolving any aftercare issues which may arise.
Please contact us on 01236 780022 or 01330 828641 or fill out ‘make a warranty claim form’. Our supplier warranty terms can be found here Rationel or Dovista
How can I order spare parts?
To order spare parts for your Architectural Doors & Windows product ranges, Please contact us on 01236 780022 or 01330 828641
Can I order samples?
We can provide colour samples. Please contact us for assistance on 01236 780022 or 01330 828641. Alternatively, email mail@adwscotland.co.uk.
What is the product lead time?
Lead time is approximately 10-12 weeks depending on complexity of your project.
Can I use your products in exposed locations?
Our Products are aluminium powder coated to 70-120microns, the guideline for exposed locations is a minimum of 70 microns, it is also recommended to set your products further back into building and to use both compriband tape and wet seal (mastic) on installation. If you would like to discuss your specific project requirements in more detail, please get in touch at: mail@adwscotland.co.uk
Condensation on the external pane of my window?
Condensation on glass window panes is a natural phenomenon that cannot be completely avoided, no matter how well insulated your house or how efficient your double-glazing. How and why condensation occurs, and what you can do to control it is explained below.
Why is there condensation on my windows?
Condensation occurs when warm, moisture-laden air meets a cool surface such as glass – the change in temperature causes the moisture to condense onto that surface in the form of water droplets. Colder external temperatures during winter months combined with heated internal temperatures will result in larger amounts of condensation.
Is condensation harmful?
Although the condensation itself is not harmful, it is unattractive and can damage windows. Condensation running down onto wooden window frames can encourage mould growth, and the continual build-up of water will eventually rot the frame. Condensation is also evidence of a humid atmosphere which is, in itself, unhealthy and can exacerbate respiratory problems, allergies and other conditions.
How can I prevent condensation?
The key to preventing condensation is to control humidity and temperature. The ideal humidity level is between 40-50% when air temperature is 20ºC. If condensation is starting to become a problem, try the following:
Increase ventilation:
It is necessary to refresh warm moist air with dry air, so air rooms for five to 10 minutes, several times a day. Make sure to air the house evenly – don’t just open kitchen or bathroom windows, as this will simply move the air with the highest humidity into (rather than out of) the house. Air your house even if it is raining - the warm internal air will still hold more moisture than the cold air outside.
Trickle ventilation:
If your windows have trickle ventilators – narrow slits placed in the frame – then keep these open all day (it is possible to retro-fit trickle ventilators into Rationel windows if necessary). Make sure other air vents – such as air bricks – are large enough, and are
not blocked.
Ventilate well when cooking and bathing:
If you have an extractor hood in your kitchen, or fan in your bathroom, then turn these on as soon as you start cooking or bathing and keep them running for 10 to 15 minutes after you have stopped. If you don’t have such extractor fans, then these rooms have to be aired more frequently.
Dry clothes outside:
Whenever possible, avoid drying clothes inside the house. If you use a tumble drier, make sure the warm air is vented outside.
Managing other less obvious sources of humidity
People, pets and houseplants:
Every living thing within a building adds to the overall humidity; for example, a single adult will produce around two litres of water vapour a day. Ventilation should take account of the number of people, pets and houseplants living together.
Lower night time temperatures and unheated rooms:
Cold air can’t hold as much moisture as warm air, so if temperatures drop – when heating is turned off – then the cooling air will deposit moisture, which is why morning condensation is common.
An empty house:
If your house has been unoccupied for any length of time (while you are on holiday, for example), then walls, furniture, carpets and so on will have absorbed moisture while the house was unheated, especially if the weather was damp when you were away. For up to 10 days after you return, try to keep windows open as much as possible while raising the internal temperature by 4-5ºC.
Condensation has suddenly become a problem – why?
It’s not unusual for windows which have been condensation free to suddenly mist up on a regular basis. If you have experienced such a change, then it might be the result of one – or a combination – of the following causes. In all cases, you will need to ensure that you ventilate internal spaces more regularly.
You have recently placed plants on the window cill:
Plants naturally produce moisture which will cool against cold window panes.
You have new windows:
New low-energy glazing improves insulation so internal and external temperatures become more apparent.
You have recently extended part of your house,
or moved into a new build property:
New plaster, cement, concrete and paint all contain a lot of moisture which takes time to evaporate completely – possibly up to a year.
Onset of winter:
Condensation is at its worst when autumn turns to winter. Temperatures start to fall, especially overnight, and heating is turned on indoors. The building structure, unheated all summer, is relatively cool but as it heats up it emits moisture into the air.
Underfloor heating:
Condensation can result if you have recently replaced radiators with underfloor heating, as radiators cause warm air to rise and circulate. This together with the removal of radiators underneath windows, can increase condensation.
Deeper windowsills or new curtains:
If you have installed windows with deeper sills, or hung thicker curtains, then heat from nearby radiators may not be able to reach and warm the glass pane, thereby encouraging condensation.






