How to Choose a Window and Door Company in Cornwall (Without the Guesswork)
Replacing your windows or front door is a job most people only tackle once every twenty years or so. That makes it hard to know what good actually looks like. Most homeowners collect two or three quotes, compare the prices, and hope for the best.
There’s a better way to go about it. After more than 30 years working as a window and door company in Cornwall, we’ve seen what separates a smooth installation from one that causes problems for years afterwards. This guide covers what to look for, the questions worth asking, and how to tell whether your current frames need repairing or replacing.
Why Cornish Homes Need More From Their Windows and Doors
Cornwall is a wonderful place to live, but it’s hard on a house. Westerly gales come straight in off the Atlantic. Salt air travels further inland than most people realise. Driving rain finds every weak seal, and damp lingers in old granite and cob walls long after the weather clears.
So a window that performs perfectly well in a sheltered town upcountry can struggle here. Hinges corrode, seals shrink, and badly fitted frames start whistling the first time a storm blows through.
A local installer understands all of this. They know which hardware copes with coastal conditions, how to seal a frame properly into a thick stone wall, and why an exposed cottage overlooking the sea at Mevagissey needs different thinking from a sheltered terrace in the middle of St Austell.
What a Good Window Installation Company in Cornwall Should Offer
Price matters, of course. But the cheapest quote is rarely the cheapest job once you factor in callbacks, draughts and early replacements. Here’s what we’d look for if we were in your shoes.
A proper home survey
Every opening is slightly different, especially in older Cornish properties where walls are rarely square. A reputable company will measure you up in person, check the condition of your reveals and skills, and talk through your options face-to-face. Be cautious of anyone giving a fixed price from a few photos.
Registration with a competent person scheme
Replacement windows and doors in England have to meet Building Regulations, including minimum thermal performance standards. Installers registered with a competent person scheme such as Assure, FENSA or Certass can self-certify their work, and you receive a certificate once the job is done. Keep it safe, because your solicitor will ask for it when you sell. If your installer isn’t registered, you’ll need to arrange sign-off through building control yourself.
Energy-efficient products as standard
Ask about energy ratings early on. A-rated double glazing should be the starting point, not a costly upgrade. For homes on exposed hillsides or close to busy roads, triple glazing can add extra warmth and cut outside noise.
Repairs as well as new installations
Plenty of firms only want to sell you new frames. A company that also carries out repairs is far more likely to give you an honest view on whether replacement is really needed. It also means there’s someone to call if a lock fails or a door drops a few years down the line.
Clear guarantees
Find out exactly what’s covered and for how long. Ask whether the guarantee is insurance-backed, as that protects you if the installer ever stops trading.
Questions to Ask Before Choosing a Double Glazing Company in St Austell
If you’re trying to find the best double-glazing company in St Austell, a few simple questions will quickly show you who knows their trade:
- How long have you been working in this area?
- Are you registered with a competent person scheme?
- Will your own team fit the windows, or do you use subcontractors?
- What energy rating do your windows reach as standard?
- What security features come with your doors?
- How do you deal with the old frames and the clean-up?
- What happens if something goes wrong after fitting?
A good company will answer every one of these without hesitating. Vague replies, or pressure to sign on the day, tell you plenty.
It’s also worth reading reviews on Google and Yell. Look beyond the star rating and read what people say. Comments about tidiness, turning up on time and how small problems were handled are often more useful than general praise.
Repair or Replace? An Honest Answer
Not every draughty window needs replacing. Many common faults can be sorted for a fraction of the cost of new frames: - Misted or cracked double-glazed units can usually be swapped without touching the frame
- uPVC doors that have dropped can often be realigned
- Worn hinges, handles and multi-point locks can be replaced
- Tired gaskets and seals can be renewed to stop draughts
Replacement starts to make more sense when frames are warped or rotten, when several units have failed at once, or when your windows are simply too old to come close to modern energy standards. Timber frames that need repainting every couple of years in the salty air can also end up costing more over time than switching to uPVC or composite.
A trustworthy installer will tell you which side of the line you’re on, even if it means a smaller job for them.
What Happens During a Window and Door Installation
Knowing what to expect takes a lot out of the process. With most reputable firms, it runs something like this:
- Free survey and quote. Someone visits, measures every opening and gives you a written, no-obligation price.
- Choosing your products. You decide on styles, colours, glazing and hardware. Online design tools let you try different looks at home before you commit.
- Manufacture. Your windows and doors are made to the exact sizes of your openings. Lead times vary, so ask when you get your quote.
- Fitting day. Old frames come out, new ones go in, and everything is sealed and finished inside and out. A standard front door often takes around half a day, while a full house of windows depends on the size of the property.
- Paperwork and aftercare. You receive your compliance certificate and guarantee details, and you should know exactly who to call if anything needs adjusting.
Why Homeowners Choose Piran Windows in St Austell
Piran Windows is a family-run window and door company in St Austell with more than 30 years in the double glazing trade. We work right across Cornwall, from Penzance to Launceston, including Truro, Falmouth, Bodmin and Wadebridge.
Here’s what you can expect from us:
- A-rated uPVC double glazing as standard, with triple glazing and aluminium windows also available
- Casement, sash, bay, tilt and turn and flush casement window styles
- Composite doors with multi-point locking and a wide choice of colours, finishes and glazing
- uPVC doors, patio doors and bi-folds
- Conservatory upgrades, including tiled warm roofs and HeatGuard roofs
- A dedicated window and door repair service, covering misted glass, locks, hinges and dropped doors
- Assure registration and a ten-year guarantee
A large share of our work comes from recommendations by friends and family, which we’re proud of. Customers often mention quick surveys, fair prices and fitters who leave the house as clean as they found it.
If you’d like a feel for the options first, try our online window configurator or take a look at our guide to uPVC windows and double glazing in St Austell.
Frequently Asked Questions
How much do new windows cost in Cornwall?
It depends on the size and number of windows, the style, the glazing and any extras such as colour finishes. The fairest way to get a figure is a free home survey. Our online quote tool is a good place to start if you’d like a rough idea first.
Do I need planning permission to replace my windows?
For most houses, replacing windows like for like falls under permitted development. Listed buildings, flats and some homes in conservation areas may need consent. If you’re unsure, check with Cornwall Council before you order.
How long do uPVC windows last?
Well-fitted uPVC windows typically last 20 to 30 years or more. In coastal areas, rinsing the frames now and then and oiling the hinges and locks a couple of times a year helps them last.
Can you repair my windows instead of replacing them?
Often, yes. Misted units, faulty locks, worn hinges and dropped doors can usually be repaired. We’ll always tell you honestly whether a repair will do the job.
Which areas of Cornwall do you cover?
We’re based in St Austell and cover the whole county, from Penzance in the west to Launceston in the east.
Talk to a Local Window and Door Company You Can Trust
If you’re planning new windows or doors, or something just isn’t working as it should, we’re happy to come and take a look. Call Piran Windows on 01726 890881, email info@piranwindows.co.uk, or request a free quote online. You’ll get honest advice and a clear price, with no pressure.