How to Choose a Window Company in Yorkshire

Suitability for your property — have they worked on houses like yours? A company that fits uPVC into 1990s estates every day may not be the right choice for a gritstone farmhouse with mullions, and the reverse is also true.

Product options — can they offer more than one answer? If every house gets the same product, the product is being chosen for the company, not for you.

Survey quality — a proper survey measures every opening, checks the condition of the reveals and lintels, notes access and flags planning status. A quick look from the drive is not a survey.

Specification detail — the quote should name the system, frame colour inside and out, glass specification, opening types, hardware and any glazing bars.

Installation responsibility — who fits the windows? Is it the company's own team or subcontractors, and who is responsible if something goes wrong?

Building regulations — replacement windows in England need to comply with Building Regulations. Ask how compliance is certified (a competent person scheme or building control).

Guarantees and aftercare — what is guaranteed, for how long, by whom, and is any insurance-backed deposit or guarantee protection offered?

Communication — do they explain trade-offs honestly, including where a product isn't suitable?

Lead times — realistic lead times are a good sign. Very short promised lead times on bespoke products are worth questioning.

Pricing behaviour — high-pressure selling, large "sign today" discounts and prices that halve during the visit are warning signs.

Ask how they will fit into the stone: how the frame sits in the reveal, how they will protect mullions and surrounds, and how they will seal against stone that isn't perfectly square. Ask to see a stone house they have done, and look at the frame position and sightlines in the photographs. Colour should be chosen against your own stone, not a brochure.

Listed building consent is usually needed to change windows, and the conservation officer's view decides what is acceptable. A good company will tell you early if their products are unlikely to be approved, and will help prepare the information needed for the application rather than ordering first. Sometimes the honest answer is repair, or a timber specialist.

Check whether an Article 4 direction removes permitted development rights for your street, and whether you are within the Yorkshire Dales National Park. The installer should ask about this before specifying. Expect detailed questions about glazing bar profiles, opening types and colour — they are the details planners look at.

Ask which aluminium systems they supply and why they are recommending that one for your openings. Check thermal performance for the specific configuration, sightlines, colour options, and how large sliding or bifold doors will be handled and fitted. For architect-specified systems, confirm they can supply exactly what is on the drawings or explain any substitution.

National companies offer scale and familiar names; local and regional companies are often more flexible on specification and more familiar with local stone, planning authorities and access. What matters most is who surveys, who fits and who comes back if something needs attention. Ask both kinds the same questions and compare the answers.

On self-builds, barn conversions and extensions with large glazing, ask about structural openings and lintel requirements, glass weights and handling, programme coordination with the builder, and who takes responsibility for the interface between glazing and structure. Ask whether they can quote from architect drawings and window schedules.

Which system and product are you quoting, and why? What is included — removal, disposal, making good, sills, trims? Who installs, and who is my point of contact? How is building regulations compliance certified? What is the guarantee and who provides it? What is the lead time from survey to fitting? Can I see a comparable project?

Windows in the Dales works across Yorkshire on projects ranging from straightforward replacement windows to aluminium, heritage-sensitive and architecturally demanding properties — stone houses, conservation-area homes, barn conversions, extensions and self-builds. We supply and install aluminium systems from Cortizo and Smart Systems and uPVC from the Residence Collection, and we will say so if another product or specialist would suit your building better. If you would like an initial view on your property, send us photographs or drawings.