St Austell Bay Windows & Plastics

Windows Supplied & Fitted Across St Austell & All of Cornwall

St Austell's Trusted Window Installation Specialists Covering All of Cornwall

If you're searching for replacement windows in St Austell or a reliable local installer for uPVC windows, flush casement windows, tilt and turn windows or aluminium windows — you've found the right team. St Austell Bay Windows & Plastics is a family-run business based in St Austell, supplying and fitting A-rated double glazed windows to homeowners across the whole of Cornwall — including Truro, Bodmin, Newquay, Falmouth, Fowey, Lostwithiel, Liskeard, Padstow and St Mawes. Every window we install is fitted by our own experienced local team — no sub-contractors, no call centres, no hard sell. Just honest advice, quality products and a finish you'll be proud of, backed by our 10-year insurance-backed guarantee and Certass registration.

Everything Your Home Needs Our Full Window Range

Tilt & Turn Windows

Versatile and secure — our tilt and turn windows open inward for easy cleaning and ventilation, making them ideal for flats, upper floors and hard-to-reach openings across St Austell and all of Cornwall.

Casement Windows

The most popular window style in the UK — our uPVC casement windows are A-rated, secure and available in a wide range of colours and finishes to suit any home across St Austell and all of Cornwall.

Flush Casement Windows

Perfect for period Cornish cottages and conservation area properties — our flush casement windows sit flush with the outer frame for a clean, traditional appearance with all the performance of modern double glazing. Widely accepted across Cornwall's conservation areas and AONBs.

Fully Reversible Windows

Ideal for upper floors and hard-to-clean locations — our fully reversible windows rotate 180 degrees so both panes can be cleaned safely from inside your home. A practical and popular choice across St Austell and all of Cornwall.

Aluminium Windows

Slim-profile thermally broken aluminium windows in any RAL colour. The premium choice for contemporary homes and coastal properties across St Austell and all of Cornwall — naturally salt-air resistant and ideal for exposed coastal locations.

Why Choose Us

Why St Austell Homeowners Choose Us

Based in St Austell
We're Your Local Specialists We're not a national chain. We live and work in the same area as our customers. When you choose St Austell Bay Windows & Plastics, you're supporting a local family business that genuinely cares about its reputation
10-Year Insurance-Backed Guarantee
Every window, door and conservatory we fit is backed by our 10-year insurance-backed guarantee — not just a piece of paper, but a fully insured guarantee you can rely on even if circumstances change.
Flexible Finance Available
No Sub-Contractors Our installations are always carried out by our own trained, experienced team — never sub-contracted out. That means consistent quality, accountability and a finish you'll be proud of.
Certass Registered
Every installation we carry out is Certass registered, giving you legal compliance, building regulation sign-off and full documentation. All our windows and doors meet Secured by Design standards for maximum home security.
In-House Fitters
Spread the cost of your new windows or doors with our flexible finance options — including no-deposit deals. Making home improvement accessible for every budget in St Austell and surrounding areas. Subject to status.
A-Rated Energy Efficient Products
All our double glazed windows achieve Window Energy Rating A as standard, with U-values as low as 1.2 W/m²K — keeping your home warmer and your heating bills lower all year round.

Our Process

Step 1 - Free Home Survey
Step 2 - Your Personal Quote
Step 3 - Products Are Manufactured
Step 4 - Professional Installation
Request a Quote

Areas We Cover

Covering St Austell & All Surrounding Towns

Trusted by Homeowners Across St Austell & the Surrounding Area

Covering St Austell & All Surrounding Towns

Facebook

View all
VS

Venetia Shepherd

8 April 2021

✓ Recommends us

Such 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!

KP

Karen Penrose

31 July 2020

✓ Recommends us

Absolutely thrilled with our new windows, bi-folds and composite front door. Has completely transformed our home. Lovely personal service with high quality products and installation. Wouldn't hesitate to recommend Paul, Christa, Simon and the team.

LS

Laura Swailes

Recommends us

✓ Recommends us

Great service and communication when replacing our old back door. Very professional, friendly and high standard of workmanship. Will definitely be using again for front door replacement. Highly recommend.

SR

Stephen Rickard

Recommends us

✓ Recommends us

St Austell Bay Plastics have supplied and fitted windows and doors for 2 properties — 28 units. Their work and service has been first class.

VM

Victoria Martin

Recommends us

✓ Recommends us

I had french doors installed and am so happy with the service from start to finish. Excellent quality, service and finish. Very professional and quality workmanship — highly recommended!

JH

Jo Hello

Recommends us

✓ Recommends us

St Austell Bay Plastics replaced 6 of my wooden windows with uPVC double glazing. They did a fantastic job — clean, tidy and took great care. The windows have transformed the house inside and out. Highly recommend them.

CB

Christina Brooks

Recommends us

✓ Recommends us

We had a new door and two conservatory panels refitted. I cannot praise Mike and Connor the fitting team enough — calm, hard working and treating our home as if it was theirs. The results were outstanding. Thank you.

SL

Sarah Lee

Recommends us

✓ Recommends us

Absolutely brilliant. Value for money, excellent, fast, efficient, tidy service and quality product. Courteous, knowledgeable, professional staff from consultation to installation. Used them twice for windows and sunroom — would recommend to anyone.

WS

Wayne Sewell

Recommends us

✓ Recommends us

After shopping around the big window companies, I came across St Austell Plastics. Friendly greeting, no pressure sales, fantastic price and the fitter was great. The finished item is awesome — no obligation and I will use them again.

CM

Chris Maggs

Recommends us

✓ Recommends us

From start to the end of the installation the work was first class. Thank you very much St Austell Bay Plastics.

1/10

Google

View all
AO

Alan Orme

2 weeks ago

No pressure sales, good price, great job & I would use them again.

SP

Ste Pye

2 months ago

Team arrived when they said they would and fitted a new front door which looks great. Hassle free from design to installation — will be using again for future planned works.

LB

Lynda Baldelli

4 months ago

Paul, Christa and their team were fantastic from the start. The fitters were meticulous, tidy and have done a wonderful job of everything. We couldn't be happier and thoroughly recommend.

LK

Linda Kershaw

10 months ago

Absolutely fantastic job fitting our windows. Conner did a really lovely job — very clean, respectful and professional. A total credit to the company. Well done. Thank you.

JH

Jane Hunkin

1 year ago

An amazing service from start to finish. Our conservatory roof was replaced expertly by two very hard working, thoughtful and considerate team members. Excellent service, brilliant job well done.

AA

Alison Avery

11 months ago

Nice pleasant guys who worked tidy and well. The price was fair, job looks good. We had a big sash window, double patio door and large square window fitted with no mess. Highly recommended.

1/6

Why Hundreds of Local Homeowners Trust Us

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 FENSA sign-off, we manage the entire process ourselves. Most installations are completed within a day or two, with minimal disruption to your household.

Frequently Asked Questions

We supply and install a full range of uPVC, aluminium, and timber-effect windows including casement, tilt and turn, flush casement, fully reversible, and sliding sash styles.
Yes — all our windows are A-rated for energy efficiency as standard, helping to reduce heat loss and lower energy bills for your home.
Most window installations in St Austell are completed within a single day, depending on the number of windows being replaced.
Yes — all our window installations come with a comprehensive manufacturer's guarantee alongside our own workmanship warranty for complete peace of mind.

Request a Free Quote

    St. Austell Bay Business Park, Par Moor Rd, Saint Austell PL25 3RF
    Open from 9am to 11pm
    Call us @
    01726 816906
    Send us an email
    staustellbayplastics@rocketmail.com