Look at Their Time Served
How long have they been installing the relevant type of windows and/or doors? Do they have a rich history of serving homeowners in the local region? Can they boast a range of connections with trusted manufacturers? These questions can help determine how long they’ve been in business and see if that experience applies to you. After all, you’d never settle for a less experienced dentist or surgeon, so why not afford your double glazing, bifold doors or composite doors the same courtesy?
Look for specific experience in the product you need, whether that’s uPVC casement windows, timber sash windows, eco-friendly windows or something else.
No Sales Pressure
If you feel backed into a decision regarding your home, we recommend you cut ties and never speak with that company again. A salesperson with a target to meet will only care about making their quota, so they will naturally feel less invested in your Redhill or Surrey home. At Dorwyn Ltd, we work a little differently. We have no dedicated salespeople and give our customers the time and advice needed to either make the right decision or go elsewhere. It’s entirely up to them.
Ask About Guarantees
It seems so strange in this day and age, but there are still window-fitting companies out there that try to get away with not providing a relevant guarantee. Why not pick someone who offers a decade-long guarantee instead of local fitters just because they’re closer to your home? We aim to give you the lowest price on uPVC windows, aluminium windows, sliding sash windows, composite doors, bifold doors, warm orangery roofs and double glazing – complete with warranties that you can rely on.
Check Reviews
Never pick a door or window fitter that doesn’t have some kind of online presence. Social media is a great way to see some of the work they do in Redhill or the neighbouring regions, and you can even get a sense of how they treat their customers. See if you can find them on a review site because doing so may provide insight into how they operate and the extent of their customer service.
Choose Dorwyn Ltd
With insurance-backed guarantees, out-of-hours appointments on request, CERTASS accreditation and FENSA membership, we provide a trustworthy service that homeowners around Redhill are happy to recommend.
A Full Range of Services
From measuring your space for bespoke uPVC windows or aluminium windows to supplying and fitting sliding sash windows, double glazing and composite doors, Dorwyn Ltd offers a complete, hassle-free service. You can contact us for:
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Aluminium, Timber and uPVC Casement Windows
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uPVC and Timber Sash Windows
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Energy-Efficient Windows
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Eco-Friendly Windows
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uPVC, Composite and Aluminium Doors
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Window and Door Installation
We never resort to gimmicks to attract our customers. Instead, we offer a great price the first time and go that extra mile so clients will be thrilled every time.

