About Us
A family-run window and conservatory company you can trust
Since 1973, Presswarm has helped thousands of homeowners across Hertfordshire and North London transform their homes with beautiful, energy-efficient windows, doors and conservatories.
Our Story
Over 50 years of craftsmanship
What started as a small local glazing firm in 1973 has grown into one of Hertfordshire's most trusted home improvement companies, while keeping the same family values that built our reputation.
We've fitted everything from a single replacement window to complete conservatory and orangery projects, always with the same commitment to quality materials, expert installation and honest service.
Because we directly employ our own surveyors and fitters, we control every stage of your project, from the first measurement to the final clean-up.
- Three generations of family ownership
- Thousands of local installations
- Directly employed survey & fitting teams
- Insurance-backed guarantees
Why homeowners choose us
The values behind every installation
We're proud of our reputation, earned one satisfied customer at a time.
Family-run since 1973
Three generations of the same family, still fitting windows and doors across Hertfordshire today.
No pushy sales
Honest, transparent pricing with friendly advice. We quote fairly and never use high-pressure tactics.
Our own fitters
We never subcontract. Every installation is carried out by our own experienced, directly employed team.
Fully accredited
FENSA registered and Which? Trusted Trader approved, so every job meets recognised industry standards.
Guaranteed work
All installations are backed by comprehensive insurance-backed guarantees for total peace of mind.
Local knowledge
We know Hertfordshire homes inside out, from period terraces to modern new-builds.
How it works
From first call to aftercare
- 01
Free Quote
Get in touch and tell us what you need. We'll arrange a convenient visit.
- 02
Survey
Our own surveyor measures up and confirms every detail, with no obligation.
- 03
Manufacture
Your products are made to measure to the exact specification you chose.
- 04
Install
Our experienced fitters install everything cleanly and tidy up after themselves.
- 05
Aftercare
Your installation is FENSA registered and backed by our guarantee.
Accredited & approved
Our memberships mean your installation is independently regulated and your investment is protected.
- FENSA
- Which?
- CERTASS
- TrustMark
Ready to transform your home?
Book a free, no-obligation quote today. Friendly advice, honest pricing and no pushy sales.