Unrivalled products, service & support
Our trade customers enjoy access to an array of industry-leading products, manufactured to perfection at our Sheffield manufacturing base. Beyond the products themselves, our dedicated team are secondary glazing experts and are on hand to offer top-drawer service and support throughout every stage of a project. We’ll help you to deliver a high-quality, reliable product to homeowners time after time.
Get a free quote
A member of our office team will be in touch to discuss your initial enquiry.
You'll be put in touch with your regional Business Development Manager who will arrange a visit if required.
You'll be given access to product literature, samples and other point of sale materials.
You'll be able to provide your customers with an industry-leading secondary glazing solution.
Flexibility that suits you
We offer free specialist delivery with no minimum order requirement to the vast majority of UK postcodes. Our competitive trade rates and 10-day lead time gives you the advantage. Our specific secondary glazing focus means your business can offer the best customer service and products to homeowners within your region.Work with Granada
Technical and marketing support
Our product guidance, significant stock-levels, fast nationwide delivery service and technical expertise gives you the tools to manage your secondary glazing offering efficiently. We provide a dedicated regional account manager for on-site visits. This includes installation videos, materials, and display samples to help you promote sales.
State of the art manufacturing
Our products are extensively tested, carefully assembled and backed up by warranty meaning you fulfill your obligations. Our product quality is renowned and our Sheffield manufacturing facility is controlled by us. Products are quality-controlled and health and safety compliant.Work with Granada
Guidance and advice
All of our trade customers are assigned a dedicated account manager and are provided with regular on-site visits, product information documents and technical advice. Trade customers also benefit from our extensive product marketing program and customer referral system, all backed by our ten-year warranty.
Trade Business Support FAQ
In most cases, secondary glazing will help stop condensation, but this cannot be guaranteed. Adding secondary glazing will typically reduce the amount of warm damp air getting to the face of the primary window and this helps reduce the likelihood of condensation. However, it will also lower the temperature of the inner face of the primary window and if warm damp air is trapped within the cavity or if poorly fitted secondary glazing allows warm damp air to enter the cavity, the lack of air circulation can exaggerate/exacerbate the development of condensation. In the fight against condensation it is important that the secondary glazing is well sealed and reduces the passage of air into the cavity from the room side to a minimum. But it is also important that some air is allowed to leak into the cavity from the outside. This can be achieved, in most situations, by leaving the primary windows unsealed.
Condensation occurs when warm moist air comes in to contact with a cold surface. Warm moist air can exist within the cavity between secondary and primary glazing due to; The secondary glazing being opened and closed without ventilating the cavity air to the outside before closing. A fault with the secondary glazing seals. A fault with the building fabric. The secondary window left ajar allowing warm air to enter the cavity. Condensation can typically be cleared by ventilating the cavity between the secondary and primary glazing to the external of the building. i.e. leave the primary window ajar and close the secondary glazing, normally it will clear within the hour and the primary glazing can then be closed. If the problem persists or returns, then you need to check for faults. Is the secondary glazing functioning correctly, are the seals all in place and are they engaging properly? Is there any damp entering the cavity through the primary window or reveals? If there is nothing obvious, then it may be necessary to introduce permanent ventilation through the primary window frame (this can sometimes be achieved simply by removing some of the perimeter seals around the opening elements). Is the window timber framed – if so you can introduce small weep holes.