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TEESSIDE · NORTH YORKSHIRE · YORK · TYNESIDE

Windows, doors and conservatory upgrades for your home

We look at your whole house, recommend what it needs, and look after the job from first visit to final sign-off. Free home visit, no pressure.

Book a free home visitCall 01642 989 754
Free · No pressure · No chasing calls

Assure-registered installer

Insurance-backed guarantee

Finance from 10.9% APR Representative

What can we help you with?

Windows

Flush and casement windows, chosen to suit your house. Warmer, quieter and secure.

See Windows

Doors

Composite, uPVC, French and sliding patio doors for the front, the back and the garden. Secure, well insulated and low maintenance.

See Doors

Conservatory Upgrades

A new roof turns a conservatory you walk through into a room you use all year.

See Conservatory Upgrades

Why choose Mullion & Co

We look at the whole house

Before we talk about products, we look at your house's age, its style and what the rest of the street looks like. Then we tell you what suits it.

Honest Advice

We'll tell you what the house needs and what it doesn't, even when that costs you less.

The right product for each job

We aren't tied to one manufacturer, so we choose what suits each part of your house.

Planning taken care of

Conservation areas, Article 4 directions and awkward openings. We deal with the council for you.

One person from start to finish

The same person visits, surveys and fits, so you always know who to ring.

Fully protected

Assure-registered, a Building Regulations certificate with every job, and an insurance-backed guarantee.

How it works

First call

What the house is, what's wrong with it, what you're after. Usually five or ten minutes.

We come and look

At the house, with samples. We'll talk through what suits it and what doesn't. This isn't a sales appointment with a price at the end of it.

Options and specification

We'll set out what we'd recommend and why, including anything we'd leave alone.

The planning side

If there's a conservation area or an Article 4 direction involved, we'll handle the correspondence.

Survey

Proper measurements. Houses move, and the survey is where that gets picked up.

Install and sign-off

We complete the install. We then walk the job with you before we call it finished.

What our customers say

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"I had the front windows all replaced and front door fantastic job off the 2 lads very respectful to the property cleaned up after them they want above and beyond fantastic job and quality off the windows and door fantastic."

Jacqueline

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"Amazing service, windows and doors are perfect, communication was great, overall really happy with this service really smooth sailing from the beginning to the end."


Holly

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"Had our windows fitted by these and all i can say is wow from start to finish it was great communication with no hard sales pressure the windows look fantastic and are super cosy thanks guys would definitely recommend"

Kirsty
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"I recently had new windows fitted by Mullion & Co and I couldn’t be happier with the whole experience. From the initial quote to the final clean-up, everything was handled professionally and efficiently.

The team arrived on time, were polite and respectful of our home, and worked neatly throughout the day. The windows themselves look fantastic — excellent quality, perfect fit, and they’ve already made a noticeable difference to noise reduction and how warm the house feels.

I was especially impressed with how tidy the installers left the house and how clearly they explained everything. Great value for money and brilliant customer service from start to finish.

Would definitely use Mullion & Co again and I’ve already recommended them to friends and family. Outstanding job!"
 
Aaron
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"Shaun and his team at Mullion & Co did an absolutely fantastic job fitting our new UPVC doors and windows.
 
We wanted to give our home a completely fresh new look, and the transformation has honestly exceeded our expectations.
 
From start to finish, the team was professional, friendly, and highly skilled. Their attention to detail and quality of workmanship really stood out, and they made the whole process smooth and stress-free.
 
The finish is flawless, and the new windows and doors have completely elevated the appearance of our house.
We couldn’t be happier with the results and would highly recommend Shaun and his team to anyone looking for quality work and excellent service."
 
Patrick

Where we work

We're based in Middlesbrough and work up to 50 to 70 Spread the cost miles out, covering Teesside, most of North Yorkshire, York and Tyneside.

Not sure if you're in range? Ring and ask. If you're not, we'll say so.

Spread the cost

Spread the cost over 3 to 10 years from 10.9% APR Representative. Subject to status.

Find out about finance

Recent Blog Posts

Not sure what your house needs? Ask us.

Tell us about the house and we'll come and look at it with you. We bring samples, talk through what suits it, and leave you to think. No charge, no pressure, and no chasing calls.

Book a free home visit
Call 01642 989 754