Perla Windows

Our Process

Precision engineering,
personal service

A structured approach from design to installation

Every Perla project follows a clear, structured process designed to deliver accuracy and quality from first drawing to final installation. By managing each stage in-house — from consultation and technical design to fabrication and installation — we provide a single, accountable point of contact. The result is consistency, control and the confidence that every element meets the standards expected of a Perla system.

Perla Windows

Stage 1

Design consultation

We begin by reviewing your sketches or design drawings to understand your intent and requirements. Our team then prepares a detailed estimate outlining scope, specification, and approach before any work begins.

Perla Windows

Stage 2

Survey & drawings

Once your order is confirmed, our survey team visits site to verify dimensions and assess conditions. Using this information, we produce accurate technical drawings for your review and formal approval.

Perla Windows

Stage 3

Fabrication & engineering

With drawings approved and measurements confirmed, fabrication begins at our factory. Each element is produced to exacting tolerances by our engineering team, with quality control applied at every step.

Perla Windows

Stage 4

Delivery & installation

Our dedicated installation teams work exclusively on Perla projects. By keeping this stage in-house, we maintain control over finish, alignment and performance — ensuring each installation meets the expectations of our clients.

How we work

Project process

From enquiry to installation, we make our process transparent from the outset so you know exactly how your project will progress. We follow a tried and tested process for each project, and pride ourselves on our quick turnaround, aiming for delivery and installation within 12–14 weeks.

Perla Windows

Start a project

Submit drawings or sketches using our enquiry form, and we’ll confirm next steps within 24 hours

Perla Windows

Get an estimate

Within 5–10 days, we provide a detailed estimate outlining scope, specification and lead time

Perla Windows

Place your order

Approve the estimate and confirm your order with a 50% deposit to begin the project

Perla Windows

Site survey

Within 5–10 days, our survey team visits site to verify dimensions and assess conditions

Perla Windows

Technical drawings

5-10 days after the survey, we issue drawings for your review and formal approval

Perla Windows

Final approval

Once technical drawings are approved, we issue the final contract for signing

Perla Windows

Manufacturing

Fabrication begins under the supervision of our expert engineering team

Perla Windows

Installation

In around 12–14 weeks, our installation team completes the project to specification

Request an estimate

Share your drawings and details through our enquiry form, and a member of our team will confirm the next steps within 24 hours.

Start a project

Speak to the team

To find out how Perla systems can be tailored to your design, we’re here to discuss scale, profiles, finishes and performance.

Contact us

Lukasz Jagiello
Office Assistant

lukasz@perlawindows.com
+44 0 203 950 1451

 

Lukasz supports the wider team across planning, scheduling, and coordination—keeping operations running behind the scenes. His flexibility allows him to step in wherever needed, helping to maintain momentum across projects.

Drawing on experience in warehousing, hospitality, and admin support, Lukasz understands how to manage competing demands while keeping client needs front and centre. His organised, proactive approach ensures nothing is overlooked.

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Kate Baranowska
Accounts & Office Manager

kate@perlawindows.com

 

Kate looks after the company finances and ensures that office and business operations run smoothly. Her responsibilities are wide-ranging and include human resources, compliance and insurance, solving any problems that arise, and ensuring that all Perla projects are progressed efficiently.

A natural multitasker, Kate has the ability to switch from role to role without breaking a sweat. She takes care of all the moving parts to keep the office running like clockwork.

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Sebastian Baranowski
Technical Director

seb@perlawindows.com
+44 0 203 906 1777

 

Perla co-founder and Technical Director, Sebastian, oversees the planning and specification phases of the production process. He also acts as the main point of contact for clients prior to manufacturing and installation.

Sebastian’s extensive knowledge of design and production stems from a life-long interest in manufacturing and engineering. Starting out as a plumber and electrician alongside his father in the family business, Sebastian went on to establish a partnership with Nick and Dan’s building company. Together, they completed more than 100 projects and built a reputation for uncompromising quality.

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Karol Ziolkowski
Project Manager

karol@perlawindows.com
+44 0203 906 1775

 

Karol oversees day-to-day project delivery, ensuring each stage runs smoothly and efficiently. He works closely with both internal teams and clients to keep timelines on track and expectations aligned.

With a BA in Business Management and a background in logistics and operations, Karol brings sharp attention to detail and strong technical knowledge to every project. His process-driven approach helps prevent issues before they arise, creating a more streamlined experience for clients.

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Nick Vassilopoulos
Sales / Marketing and Business Development

nick@perlawindows.com
+44 0 203 906 1776

 

Nick co-founded Perla to provide unparalleled standards for service, value, and quality in the windows industry. Drawing on his past experience in marketing, at technology giant Intel, Nick’s primary focus is on the bigger picture. With astute awareness of market trends and an inherent understanding of customer needs, Nick implements positive change so that Perla can continue to be at the forefront of an ever-evolving market.

Prior to establishing Perla in 2015, good friends Nick and Dan ran a London-based boutique building company focused on high-end renovations and interiors projects.

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Dan Hellin
Sales Director

dan@perlawindows.com
+44 0 203 906 1776

 

Prior to co-founding Perla, Dan spent 10 years as a Partner at the prestigious renovations company he established with Nick in 2005. With a sharp eye for detail and a meticulous approach to planning, Dan’s account management approach draws on more than 25 years’ experience in the building industry.

Having overseen a huge variety of residential and commercial projects, Dan knows how to resolve issues long before they become problems. His broad experience in building processes ensures every project runs on-time, on-budget and according to the business’ ethos of providing incredible service and impeccable quality.

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