New window frames, fitted properly
Draughts, condensation on the glass or frames that need painting every few years? We replace window frames in uPVC, timber or aluminium, with HR++ or triple glazing, and finish everything neatly: inside, outside and where the frame meets the wall. One in-house team, one point of contact, in English.
New frames that actually seal
A window frame is only as good as its connection to the wall. That is where draughts come in, where cold bridges form and where it leaks if the finishing is poor. So we do not just fit the frame: we remove the old one, seal the joint, fit the sills and do the plastering and painting around it.
We advise on material, glazing and opening direction, and take into account what the municipality or the owners' association requires. For listed buildings or protected townscapes we check profiles and glazing type. You receive a clear quotation in advance.
Request a quote for window framesOne in-house team
From removal to painting by our own tradespeople.
A clear price up front
A quotation per frame and per item, without surprises.
A proper seal
Airtight and watertight, with finishing inside and out.
Tailored advice
Material, glazing and opening direction that suit your home and the rules.
Window frames in our projects
New frames and sliding doors feature in many of our renovations. A selection of completed work.
What our clients say
Would you like a result like this at home?
Tell us what you have in mind. You get a free quote, usually within one working day.
Frames, glazing, sliding doors and front doors
The most common options at a glance. We advise what suits your home, your budget and the rules of the municipality or owners' association.
uPVC frames
Low maintenance, well insulated and available in many colours and wood-grain finishes. The usual choice for terraced houses and flats.
Timber frames
For character buildings, listed buildings and streets where the appearance is protected. Timber needs periodic painting.
Aluminium frames
Slim profiles and large glass areas, ideal for sliding doors and modern extensions.
HR++ and triple glazing
The glazing determines most of the insulation. Sound existing frames can sometimes just get new glass.
Sliding and lift-slide doors
A wide opening to the garden or balcony, often together with an extension.
French doors and front doors
Garden doors, balcony doors and a new front door, fitted and hung.
Heritage glazing and secondary glazing
For listed buildings and protected townscapes, where the old frame must stay.
Insulation around it
New frames pay off most together with roof, floor and wall insulation.
Include the facade
Scaffolding up anyway? Pointing, brickwork and exterior painting in one go.
Work out what new window frames will cost
Choose the size and finish level and see a guide price straight away, including VAT. In the full calculator you add options and request a quote.
- Guide prices for the Randstad in 2026
- Three finish levels, from basic to premium
- Your final price follows after a visit
How we replace your window frames
From measuring to the last bead of sealant, in five steps.
Survey and measuring
We look at the existing frames and the connection to the facade and measure precisely.
Advice and quotation
Material, glazing, colour and opening direction, with a clear price per frame.
Production and planning
The frames are made to measure; we schedule fitting per facade.
Fitting and sealing
Old frame out, new frame in, airtight and watertight.
Finishing and handover
Sills, plastering, trims and painting, inside and out.
What would new window frames cost at your place?
Tell us briefly about your home and your plans. You get a free quote, usually within one working day, with no obligation.
- A clear price up front, extra work always agreed first
- Carried out by our own team, no subcontractors
- One year of guarantee on the work
Our own team, no subcontractors
Your entire job handled by our own 20 to 30 craftsmen. Short lines, one point of contact.
One price up front, no surprises
You know where you stand from the outset. No unexpected extra costs afterwards.
1-year guarantee on the renovation
We stand behind our work and are only finished when you are satisfied.
Window frames in Rotterdam and across the Randstad
We replace window frames in Rotterdam and the rest of the Randstad, from walk-up flats in Rotterdam-Zuid to townhouses in The Hague and canal houses in Amsterdam. If your town is not listed, just get in touch.
And also in, among others
We work with reliable A-brands, for a durable result with a manufacturer's warranty.
Questions about window frames
uPVC, timber or aluminium: what suits my home?
HR++ or triple glazing?
Do I need a permit for new window frames?
Does the owners' association need to approve?
Can I replace only the glass?
How long does it take?
Will it be messy inside?
Is there a subsidy for new glazing?
Do you fit sliding doors and front doors?
Do you work in English?
Ready for new window frames?
Book a free survey. We measure, advise on material and glazing and draw up a plan with a clear price per frame.
Replacing window frames: what matters
The frame itself is only half the story. The glazing, the connection to the wall and the rules of the municipality or owners' association decide whether new frames do what you expect.
Choosing the material
uPVC is the most common choice in the Netherlands: it insulates well, needs little maintenance and comes in wood-grain finishes. Timber remains the choice for listed buildings and character streets, and is easy to repair. Aluminium is strong and slim, which makes it ideal for wide sliding doors.
Glazing: the biggest gain
The glazing determines most of a window's insulation. HR++ is the standard; triple glazing insulates better but needs a frame designed for the weight. For listed buildings there is thin heritage glazing, or secondary glazing on the inside.
The connection to the wall
Draughts and leaks rarely start in the frame itself, but in the joint between frame and wall. We seal that joint airtight on the inside and watertight on the outside, then finish reveals, sills and paintwork so it looks as if it was always like that.
Permits, heritage and the VvE
If the appearance stays the same, replacement is usually permit-free. Changes to layout, colour or material at the front, or a listed building or protected townscape, often bring requirements for profiles and glazing. In apartment buildings the owners' association often decides on colour and model. See getting VvE permission to renovate.
Do not forget ventilation
New frames are far more airtight than old ones, so the house ventilates less by itself. Trickle vents or another form of ventilation belong in the plan, or you get condensation on the coldest surfaces. See insulating an old Dutch house without causing damp.
Common mistakes with new frames
- Triple glazing in frames that cannot carry the weight.
- Airtight frames without ventilation, causing condensation.
- Only sealing the joint with sealant, without a proper airtight and watertight seal.
- Ordering before the municipality or owners' association has approved.
New frames pay off most together with the rest of the shell: see home insulation. Scaffolding up anyway? See facade renovation.