VS
Venetia Shepherd
8 April 2021
✓ Recommends usSuch a brilliant and professional company. So good to deal with and the windows are really special — they have transformed our seaside cottage. Thank you so much!
If you're searching for double glazing in St Mawes, replacement windows near you, or a reliable local installer for composite doors, aluminium bi-fold doors or a new conservatory — St Austell Bay Windows and St Austell Bay Plastics serves St Mawes and the Roseland Peninsula including Portscatho, Veryan and Gerrans. Our aluminium range is salt-air resistant and perfect for St Mawes homes. Our own in-house fitting team carries out every installation — no sub-contractors, no hard sell. Just honest advice, A-rated products and a 10-year guarantee on every job.
Flexible Finance
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
St Mawes is approximately 22 miles from our St Austell base. We cover St Mawes and the Roseland Peninsula including Portscatho, Veryan and Gerrans.
Yes. Every window and door installation we carry out in St Mawes is Certass registered — giving you full building regulation compliance and legal documentation on the day of completion. You receive your Certass certificate when the job is finished, which can be passed on to future buyers if you sell your home.
Yes. Our aluminium range is specifically suited to coastal and exposed locations like St Mawes and the Roseland Peninsula, where salt-air resistance and long-term durability are essential.
As well as St Mawes itself, we regularly cover the surrounding villages and areas including Portscatho, Veryan, Gerrans and Tregony. If you're unsure whether we cover your specific location, just give us a call on 01726 816906 — we're always happy to advise.
Why Choose Us
Local to St Mawes — Based Just 22 Miles Away in St Austell
We're not a national call centre or a travelling salesman. Our team is based in St Austell — just 22 miles from St Mawes — and we've been serving homeowners across this part of Cornwall for nearly twenty years. When you call us, you speak to someone who knows St Mawes, knows the local properties and genuinely cares about the work we do here.
Period & Coastal Property Specialists — St Mawes
St Mawes combines a rich heritage character with coastal exposure — a combination that demands windows and doors that are both sympathetic to the local architecture and built to withstand a coastal environment. Our heritage flush casement range suits St Mawes's period properties, while our aluminium range handles the salt-air exposure without corroding or fading.
Our Own In-House Fitting Team — No Sub-Contractors
Every window, door and conservatory we install in St Mawes is fitted by our own employed, experienced local team — never sub-contracted to a third party. That means consistent quality, full accountability and a finish that reflects well on your home.
Step 1 - Free Home Survey
Step 2 - Your Personal Quote
Step 3 - Final Survey
Step 4 - Products Are Manufactured
Step 5 - Professional Installation
Covering St Austell & 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 and St Austell Bay Plastics is backed by an insurance-backed guarantee of up to 10 years 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 CERTASS 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.
