About us
We will provide you with a solution
As well as making products that improve your home, we offer a bespoke service — design consultation, manufacture and installation handled by the same team.

10-year guarantee
On all purchased products.
£10m public liability
Public liability insurance held.
Free, no-obligation quote
We visit you to discuss your needs, then quote.
Supply only or supply and fit
Measure, quote and supply materials only if you prefer.
Where we came from
From Holland to North London
Prime Duo Frame started its journey as Boroci Group Company in Holland and have done enormous projects all over Holland and other EU countries.
We are now based at Address to be confirmed in London, working on residential and commercial projects across the city. The window and door systems we fit are ALUMIL architectural aluminium, alongside uPVC where it is the better answer for the building.
Our team of expert installers have over 25 years of experience between them.



How we work
Bespoke means made for your opening
Not a stock size trimmed down on the day. Every unit is manufactured to the measurements we take on your site.
Highly experienced, qualified staff
The same team advises, measures and installs, so nothing is lost in translation between visits.
Quality materials
ALUMIL architectural aluminium systems with certified performances, and uPVC where it suits the building better.
Informed, helpful people
Straight answers about what a system will and will not do — including when a cheaper option is the right one.
Our workflow
How a job runs
Four stages, and you deal with the same team through all of them.
- 01
Design visit
We visit you to discuss your plans and take exact measurements.
- 02
Manufactured
Your windows and doors are then manufactured to the exact size required.
- 03
Installation
Our installers will come and expertly install all your windows and doors.
- 04
Guaranteed
All of our work comes with a 10-year guarantee on all purchased products.

Get started
Let’s talk about your building
Tell us what you are trying to achieve. We will come out, measure up and give you a written quotation — free, and with nothing to sign.
Supply only or supply & fit · 10-year guarantee · £10m public liability
