New window frames and better insulation
Draughts, single glazing or a high energy bill? New window frames and good insulation make your home in Rotterdam more comfortable and more efficient. We fit uPVC, aluminium and timber frames with HR++ or triple glazing, and insulate the roof, façade and floor. One dedicated team, one point of contact and a clear price agreed up front.
A more comfortable home and lower energy bills
Energy upgrades work best when tackled as a whole: new window frames with good glazing only really pay off once the roof, façade and floor are insulated too, with enough ventilation. As a dedicated construction company in Rotterdam, we bring the entire building shell up to standard, with one team and one point of contact.
From replacing draughty window frames to a complete energy-upgrade package aimed at a better energy label: you receive a clear quote up front with a transparent price breakdown. Where possible, we also keep you informed of available grants such as the ISDE.
Request your free energy-efficiency adviceOne dedicated team
Our own craftsmen, one point of contact, no miscommunication.
Clear price up front
A clear quote, with no surprises afterwards.
Guaranteed & certified
A guarantee on our work, plus CO certification, STEK, NEN 1010 and VCA.
Local in Rotterdam
Familiar with Rotterdam's homes and the local council.
Recent projects in Rotterdam and the Randstad
A selection of our completed projects. View the full portfolio for more.
What our clients say
We only publish genuine, verified reviews. Our clients' reviews will soon be shown here via Google.
What energy upgrades involve
Window frames, glazing and insulation work together. We take on the entire building shell in one project.
uPVC & aluminium window frames
Low-maintenance frames made to measure, neatly finished and well insulated.
Timber window frames
Classic timber frames for characterful properties and planning approval.
HR++ & triple glazing
Better-insulating glazing against draughts, cold and noise.
Roof, façade & floor insulation
The whole shell insulated for comfort and a better energy label.
Include the façade?
Combining insulation with façade repair? Take a look at our façade renovation.
Ventilation
Good ventilation for a healthy indoor climate, hand in hand with insulation.
How we make your home more energy-efficient
A tight process in five steps, from survey to handover.
Survey & advice
We survey the home, take measurements and advise on window frames, glazing and insulation.
Quote & grants
You receive a clear quote with a transparent price breakdown and, where possible, grant information.
Window frames & glazing
Old frames out, new frames with HR++ or triple glazing in.
Insulation & ventilation
Roof, façade and floor insulated, with the right ventilation.
Handover & guarantee
We walk through everything together and hand over neatly, with a 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 and insulation in Rotterdam and across the Randstad
Rotterdamse Bouwbedrijf is at home in Rotterdam, but we replace window frames and insulate homes across the whole Randstad. From Rotterdam and Dordrecht to The Hague, Leiden and Amsterdam, and everywhere in between. Don't see your town listed? Do get in touch, we work throughout the region.
And also in, among others
We work with reliable A-brands, for a durable result with a manufacturer's warranty.
Questions about window frames and insulation
HR++ or triple glazing?
Where should I start with insulation?
Is there a grant for energy upgrades?
How much will I save with new window frames and insulation?
Where do you replace window frames and insulate homes?
Ready to make your home more energy-efficient?
Arrange a free, no-obligation consultation. We come to you, discuss the options and draw up a personal plan with a clear price.
Smart energy upgrades: glazing, window frames and insulation
Energy upgrades are worth it, but only when the measures work together. New glazing in a draughty house without ventilation brings damp rather than comfort.
HR++ or triple glazing
HR++ glazing is the standard and almost always cost-effective. Triple glazing insulates even better, but it is heavier and calls for suitable, deep frames. In thin existing frames, triple glazing makes little sense. We advise on what genuinely pays off for your home.
Frame material and draught sealing
Timber, uPVC or aluminium each has its place, depending on appearance, maintenance and budget. Just as important is the draught sealing around the frame, because that is where the savings otherwise leak away. A good connection to the façade prevents cold bridges.
Insulation and ventilation in balance
Cavity, floor and roof insulation are often the fastest to pay for themselves. But a well-sealed house needs ventilation, otherwise humidity rises and mould appears. We keep insulation and ventilation in balance, and look into grants via the ISDE and the energy label with you.
Common mistakes
- Triple glazing in frames that are too thin, with barely any gain but high costs.
- Making the home airtight without ventilation, leading to damp and mould.
- Isolated measures without a plan, with cold bridges and disappointing returns.
If the scaffolding is up anyway and you want to include the roof, take a look at installing a dormer. If the walls inside then need painting, we also take care of the plastering and finishing. Doing the whole home at once, including the façade work? See full home renovation. As for financing, our overview of the grants for home insulation in 2026 sets out which measures fall under the ISDE scheme and what conditions apply.