Kozenta – Kozijnen & Schuifpuien
Replacing window frames during a renovation project

Two routes

Renovation or new build: each route needs a different approach

Whether you're replacing existing frames or ordering frames for a new-build home or extension: we tailor our approach to your situation.

Comparison

What's the difference?

Both routes lead to the same result: custom-made frames, expertly installed. The path there differs considerably.

Existing home

Renovation & replacement

  • We measure all frames exactly on-site at your home.
  • The old frames are removed and disposed of neatly.
  • Where needed we use sub-frames to align the new dimensions with the existing reveal.
  • Interior and exterior finishing (sealant, trim) is included in the installation as standard.
  • You can simply keep living in your home: installation usually takes one to two days.
  • You may qualify for ISDE subsidy on insulating glazing.
  • The standard VAT rate applies for an existing, private home.

New situation

New build & extensions

  • We work from architectural drawings and the frame schedule from the architect or contractor.
  • Connection details (cavity, insulation, water barrier) are agreed on technically in advance.
  • Planning is coordinated with the contractor, so frames are installed at the right stage of construction.
  • Lead times are longer than for renovation, because frames are custom-produced for the new build.
  • ISDE subsidy does not apply to new build; it only applies to existing homes.

Tailored advice

Which route suits you?

Not sure yet, or want an instant indication? We'll help you get started quickly.

Replacing frames in an existing, occupied home? Then renovation is your route: relatively quick, with the possibility of ISDE subsidy. Building new, doing a major renovation, or realising an extension? Then we work from architectural drawings and coordinate closely with your contractor.

Good to know

Frequently asked questions

What customers ask us most often about renovation and new build.

Ready to get started?

Tell us whether it concerns renovation or new build, and we'll think along in the right direction right away.

Free quote