Proudly Serving All Of Teesside
Based in New Marske, Redcar — we’re your local, family-run window and door specialists. Over 30 years combined experience fitting uPVC and aluminium windows, composite doors, French doors and bi-folds across Teesside and the North East.
30+ Years
Combined experience
4.9/5
165+ Reviews
10-Year
Guarantee & CERTASS
Local Team
New Marske based
Areas We Cover Across Teesside
From the coast to the moors — we supply and fit windows and doors across every corner of Teesside and the surrounding North East.
Redcar
Local Redcar Window & Door Fitters
Our home turf. We supply and fit uPVC windows, composite front doors, French doors and bi-folds across Redcar and the surrounding coast.
Fast local response & free home surveysNew Marske
Our Home — New Marske HQ
Our main operational base. Fitting uPVC windows, composite front doors, French doors and bi-folds across New Marske and the surrounding area.
Our home turf — fastest response timesSaltburn-by-the-Sea
Coastal Glazing & Weatherproof Doors
High-grade uPVC windows, composite doors and aluminium bi-folds designed to withstand harsh coastal weather and sea salt air.
Marine-grade fittings & seals for the coastGuisborough
Heritage & Modern Glazing Solutions
Period sash windows, flush sash timber-look frames and composite doors in any custom RAL colour for traditional and modern Guisborough homes.
Custom door colours & traditional finishesMiddlesbrough
Full Residential Window & Door Fitting
Complete double glazing installations, composite entrance doors, bi-folding doors and sliding patio doors for homes across Middlesbrough.
CERTASS certified window replacementsStockton-on-Tees
Windows, Doors & Sliding Patio
Upgrading tired windows, installing sliding patio doors, French doors and energy-efficient window systems across Stockton and Billingham.
Free no-obligation quotes availableHartlepool
Windows, Doors & Glazing
Expert uPVC specialists providing window replacements, composite door fitting and energy-efficient glazing across Hartlepool.
Full glazing & workmanship guarantee
Your Teesside Neighbours, Not A Call Centre
We live and work here. When you call 01642 687200 you speak to our New Marske office — not a distant national chain. Our liveried vans and certified fitting team are on Teesside roads every day.
Trusted By Teesside Homeowners
“I have used Transform UK, Redcar before and wouldn't use anyone else. Had a new back door fitted and absolutely love the look and quality. The guys keep in touch every step of the way, nothing is too much trouble, and they work quick, clean and friendly!”
Dorothy McKenna
Redcar, Teesside
“Had Gareth and Paul round fitting a new door for me. Great service and price. I honestly can't complain, cleaned all mess left and very happy with my new door!”
Harry Boyes
New Marske, Redcar
“Had Harry and Paul round to repair my composite door which was fitted by another company. Transform booked me in quickly and fixed it perfectly so no draft comes through for winter. Very friendly, quick and efficient!”
Local Homeowner
Saltburn-by-the-Sea
“This company was fabulous, I love my windows and doors! I had every window and door newly installed by them. Everything was done as I asked and nothing was too much for them. Totally nice bunch of guys to have around your home.”
General Window Client
Guisborough, Cleveland
Tell Us What You're Looking For
No pushy salespeople. Just a friendly chat about your project with a free, no-obligation home survey across Teesside and the North East.
1. What home improvement products do you need?
Select all that apply — you can pick more than one.
Backed By Our 10-Year Guarantee
Every window and door we supply & fit across Teesside is covered by our full 10-year workmanship guarantee — CERTASS certified and fully insured for your peace of mind.