Family-run uPVC, composite and aluminium window and door specialists — supplying and fitting across St Austell, surrounding towns and all of Cornwall since 2005.
If you're searching for double glazing in St Austell, replacement windows near you, or a reliable local installer for composite doors, bi-fold doors or a new conservatory - you've come to the right place.
St Austell Bay Windows & Plastics is a family-run business based in St Austell, supplying and fitting across Cornwall — including Truro, Bodmin, Newquay, Falmouth, Fowey, Lostwithiel, Liskeard, Padstow and St Mawes.
We supply and fit A-rated uPVC windows, aluminium windows, composite front doors, aluminium bi-fold doors, conservatories, warm roof replacements and more - all installed by our own in-house team of experienced local fitters.
No call centres. No salespeople. No sub-contractors. Just honest, quality work from people who live and work in the same communities as you.
Spread the Cost of Your Home Improvements
Make windows, doors and conservatories more affordable with monthly payment options — including no-deposit deals for qualifying customers.
- Flexible monthly payments
- No-deposit options available
- Quick online application
- Subject to status and credit checks
Based in St Austell
10-Year Insurance-Backed Guarantee
Flexible Finance Available
Certass Registered
In-House Fitters
A-Rated Energy Efficient Products
Covering St Austell, Cornwall & All Surrounding Towns
Honest advice, quality products and a finish you'll be proud of.
When you invest in new windows or doors, you want complete peace of mind - and that's exactly what we deliver. Every installation carried out by St Austell Bay Windows & Plastics is backed by a 10-year guarantee as standard.
That means your frames, glazing units, locks and workmanship are all covered long after our vans have left your driveway. Your installation is also registered with FENSA for building regulation compliance.
Every installation is carried out by our own in-house team of experienced local fitters - and we never sub-contract. That means consistent quality, full accountability and a clean, tidy finish every single time.
From your free home survey through to the final fit and Certass sign-off, we manage the entire process ourselves. Most installations are completed within a day or two, with minimal disruption to your household.
Prices for casement windows vary, depending on size, glazing specification and colour. For an accurate quote tailored to your home, contact us for a free survey.
In most cases, replacing like-for-like windows does not require planning permission. However, if your property is in a conservation area, an AONB or is a listed building, restrictions may apply. Our team can advise you on this during your free survey.
Yes. All our window and door installations are registered with Certass, ensuring they comply with current building regulations.
We cover St Austell and a wide range of surrounding towns including Truro, Bodmin, Newquay, Falmouth, Fowey, Lostwithiel, Padstow, Liskeard and St Mawes - and many villages in between.
St. Austell Bay Business Park, Par Moor Rd, Saint Austell PL25 3RF
Call us @
Send us an email
