23 years of experience • Complete renovations • Work according to Dutch standards
Complex renovations of houses and apartments – our specialty!
Plumbing, central heating and electrical installations, tiling, installation of sanitary fixtures, interior painting and façade renovation. This is only part of the work we carry out every day as part of complete renovation projects.
We have been renovating houses and apartments for 23 years.
From full modernisations to individual jobs such as inspection and testing of electrical and plumbing installations or refreshing selected rooms. We focus on solid workmanship, high finishing quality and attention to every detail.
We look forward to working with you.
🏠 Roof
We repair roofs and refresh façades so that the house is watertight, warm and looks good for many years.
Roof renovation and insulation
We start with an inspection of the structure: rafters, boarding, insulation, the condition of the covering and flashings. On this basis we decide whether repair is sufficient or a complete replacement of the roof covering is needed.
We replace tiles, felt, membranes, flashings and gutters. We ensure the tightness of all connections so that the roof is resistant to wind, rain and snow.
During roof renovation we can:
- add thermal insulation to reduce heating costs,
- prepare the roof for solar panels,
- improve attic ventilation to avoid moisture and mould.
Would you like a quote for your roof or façade?
Request a roof quote🧊 Insulation and façade
We insulate walls with EPS or mineral wool in line with current regulations.
Wall insulation and façade renovation
We pay attention to details around windows, corners and window sills so that the façade is even and durable.
On insulated walls we can apply:
- textured renders (e.g. scratch or pebble dash),
- smooth finishes ready for painting,
- façade paints with increased resistance to weather conditions.
We can either refresh the existing façade – washing, repairing cracks, a new render or coat of paint – or carry out a full modernisation with insulation and new window sills.
Would you like a quote for insulation or façade work?
Request insulation and façade quote📹 Monitoring and cameras
We install cameras, bring in power and configure live view so you can safely control your home from your phone – day and night.
Installation and cable routing
We choose the right spots for cameras so they cover entrances, driveways, gardens and critical points around the house. We route cables so they are as invisible as possible and well protected.
Depending on the system we use:
- PoE cameras powered over Ethernet,
- local or central power supplies with surge protection,
- neat wall and façade penetrations.
Recorder and phone access
We configure the recorder (NVR/DVR), set motion-triggered or continuous recording and retention time. We connect the system to your router so you can access it from your phone or computer.
- app installation on your phone,
- login and test of live view,
- browsing recordings and motion notifications.
When we are done, we show you step by step how to operate the system in a simple and understandable way.
Would you like a quote for a monitoring system in your home?
Request monitoring and camera quote🏗️ Steel structures and portals
We remove load-bearing walls and install steel portal frames so that the building structure remains safe and compliant with standards.
Removing load-bearing walls with proper support
Before demolishing a load-bearing wall we analyse the load and choose the right type of steel beam or portal frame. This ensures that the new opening (e.g. between living room and kitchen) is structurally safe.
We can:
- install temporary supports for the slab,
- cut out the section of load-bearing wall for the opening,
- install beams and steel posts (portals) according to design,
- box in the structure with plasterboard ready for finishing.
Cooperation with a structural engineer
We work on the basis of designs and guidelines from a structural engineer. After completion the area is ready for finishing (plaster, skim coat, paint or cladding).
Planning to remove a load-bearing wall and install a steel portal?
Request a steel structure quote✨ Suspended ceilings
We install all types of suspended ceilings – with full finishing, LED strip lighting and LED downlights.
Gypsum-board ceilings
We design and install gypsum-board ceilings: drops, islands, straight lines and more complex shapes. We ensure a level surface, solid framing and neat finish ready for painting.
LED strips and downlights
While building the ceiling we prepare the complete lighting installation:
- LED strips in bulkheads, recesses and along walls,
- LED downlights in suspended ceilings (layout and output),
- routing of cables, drivers and dimmers inside the structure.
The result is an even, comfortable light and a modern visual effect without visible cables.
Modular and technical ceilings
We also install grid and system ceilings in offices, commercial spaces and technical rooms – with easy access to installations above.
Planning a suspended ceiling with LED lighting?
Request a ceiling quote🖌️ Painting of woodwork
We refresh and protect wooden doors, window frames and other joinery – inside and outside – using paint and varnish systems adapted to Dutch weather conditions.
Renovation of windows and doors while preserving wood grain
In the Netherlands most houses have wooden joinery exposed to wind, rain and salty air. We therefore begin with a thorough inspection: cracks, peeling paint, areas exposed to moisture.
Old coatings are sanded or stripped, loose fragments removed and defects filled with suitable wood fillers. This ensures that new layers of varnish or paint last long and do not peel after a single season.
Varnishes and paints for Dutch climate
We use coating systems designed for marine climate:
- Primers and impregnations that protect against moisture and fungi,
- varnishes and stains that highlight the grain,
- opaque paints for classic Dutch colours (white, anthracite, greens, navy blues).
We always apply the right number of layers (usually a 3-coat system) respecting drying times. This gives a smooth, washable surface that looks fresh for a long time.
Interior and exterior work
We paint joinery:
- outside – window frames, front doors, frames, trims,
- inside – interior doors, casings, skirting boards and plinths,
- decorative details – balustrades, posts, wooden stair elements that need renovation.
We protect floors, glazing and fittings to leave everything tidy – without drips or random specks on glass.
Do you have wooden windows or doors that need refreshing?
Request a woodwork painting quote🪟 Window replacement
We replace old windows with new ones and complete the joinery so everything is airtight and aesthetically finished.
Replacing windows with new ones
We carefully remove existing windows, secure the interior and prepare the openings for new frames. We work with both uPVC and wooden windows.
We ensure proper levelling and anchoring so the windows open smoothly, do not jam and are tight against wind and rain.
During replacement we can also:
- install new interior and exterior window sills,
- add insulation around reveals (foam, sealing tapes),
- eliminate thermal bridges around the frames.
Do you need a quote for window replacement?
Request a window replacement quote🛠️ Complete window joinery
We provide full finishing around windows – both inside and outside the building.
Finishing around new windows
Thanks to this you are not left with an unfinished opening after window installation that requires additional trades.
As part of window joinery we offer:
- plaster and plasterboard reveals around windows,
- finishing of window recesses ready for paint or tiles,
- installation of trim boards, casings and warm window sills,
- adjustment of hardware, gasket replacement and small repairs.
Do you need a quote for window replacement or full window joinery?
Request a window joinery quote🛁 Bathrooms and toilets
Complete bathroom and WC renovations – from installations and waterproofing to tiling, fixtures and shower enclosures.
Complete bathroom renovation
We handle bathrooms from shell to turnkey finish. We remove old fixtures and finishes, prepare walls and floors for new layers.
We can:
- install and relocate water and waste pipes for showers, baths, basins and toilets,
- install heating and electrical systems in bathrooms (ladder radiators, sockets, lighting, safe zones),
- apply waterproofing in wet zones – liquid membranes, sealing tapes and corners,
- build plasterboard walls and niches, concealed frames, recesses and shelves in the shower,
- lay wall and floor tiles, including slopes, grout and silicone joints,
- install fixtures: shower enclosures, baths, taps, shower heads, basins, toilets and bidets,
- fit bathroom furniture, mirrors, accessories and details.
Practical and easy-to-maintain finishes
We advise on materials so that the bathroom is not only attractive but also easy to keep clean. We help plan tile layouts, lighting and fixture placement to make the most of the space.
Planning a bathroom or toilet renovation?
Request a bathroom quote⚡ Electrical installations
New circuits, protection, distribution board upgrades, appliance connections and safety testing.
New installations and upgrades
We install complete electrical systems in houses and apartments and upgrade older installations to meet current safety standards. We design cable cross-sections, protection and circuit layout according to actual loads.
We can:
- install new circuits for sockets and lighting,
- prepare power for induction hobs, heaters, heat pumps,
- design and install LED lighting (ceilings, niches, stairs),
- upgrade or replace the distribution board (breakers, RCD, SPD),
- tidy cabling in basements / garages / boiler rooms,
- prepare wiring for internet, CCTV and intercom systems.
Testing and safety
After completion we carry out electrical tests (insulation resistance, fault loop impedance, RCD tests) to ensure the system is safe for occupants and meets insurer requirements.
Need to check your installation or plan new circuits?
Request an electrical quote🎨 Painting and finishing
Precise painting of walls, ceilings and details plus finishing work that completes the entire renovation.
Surface preparation
We begin with thorough preparation of walls and ceilings. We remove old coatings, cracks and defects, level surfaces and prime them with the right products so the paint adheres well.
- filling and skim coats,
- sanding and levelling of walls,
- priming for paints, wallpapers or wall panels,
- protecting floors, windows, furniture and doors with foil and tape.
Painting and decorative details
We paint walls, ceilings, recesses and details with paints selected for each room (bathroom, kitchen, living room, bedroom). We care about even coverage, clean colour transitions and neat corners.
- painting with latex, acrylic and specialist paints,
- painting doors, casings, skirting boards and plinths,
- creating feature walls, accent colours and stripes,
- installation and painting of cornices, mouldings and 3D panels.
After finishing we tidy up, remove protection and hand over ready-to-use rooms.
Want to refresh your walls or finish the last details after renovation?
Request a painting and finishing quote💧 Water and heating installations
Pipe replacement, new distribution, radiator connection and preparing the house for underfloor heating.
Water installations – cold and hot water
We replace old steel or copper installations with modern systems based on PP / PEX pipes. We route new risers and runs with correct diameters, slopes and anti-condensation insulation.
- removal of old pipes and unused branches,
- new distribution to bathrooms, kitchens and utility rooms,
- connections for taps, showers, baths, dishwashers, washing machines,
- installation of shut-off valves and filters at the main entry.
Central heating and underfloor heating
We modernise heating systems in existing buildings and install new ones in new houses. We size radiators and underfloor loops to each room.
- installation and connection of radiators with thermostatic valves,
- installation of underfloor heating: manifolds, loops, venting and pressure tests,
- connection of boiler, heat pump or heat exchanger,
- safety features: expansion vessels, safety valves, air vents.
Finally we pressure-test every installation and prepare it for screeding or closing of walls.
Planning pipe replacement, heating upgrade or underfloor heating?
Request a water and heating quote🧱 Walls
Plastering, skim coats, straightening walls and tiling in kitchens and bathrooms – everything to make surfaces even, durable and ready for finishing.
Plaster and skim coats – straight, even walls
We begin by assessing existing walls: loose plaster, cracks, unevenness and traces of old installations. Based on this we choose the right technology – from local repairs to full plastering.
- cement-lime and gypsum plasters,
- skim coats for painting (1–3 layers depending on substrate),
- levelling walls even with major imperfections,
- crack repairs using reinforcement mesh and suitable fillers.
Kitchen and bathroom walls ready for tiles
In wet areas we prepare walls for tiles with correct slopes, expansion joints and waterproofing. This ensures tiles adhere properly and grout does not crack after a few months.
- levelling walls for ceramic or porcelain tiles,
- waterproofing in wet zones (showers, baths, around sinks),
- precise cutting of tiles at corners, recesses and frames,
- construction of shelf recesses, boxing for cabinets, frames, etc.
After completion the walls are straight, smooth and ready for paint or other finishes (tiles, wall panels, decorative coats).
Do you have uneven walls, cracks or plans for tiles in the kitchen or bathroom?
Request a wall work quote🍽️ Kitchen
Plumbing and electrical installations, appliance connections, tiling, boxing and turnkey finish.
Plumbing and electrics for the kitchen
We start by planning sockets, lighting points and water and waste connections for sinks, dishwashers, washing machines or fridges with ice makers. Everything is matched to the kitchen design and actual layout of furniture.
- new electrical circuits for induction hob, oven, dishwasher,
- sockets above worktops and inside cabinets (e.g. for hood or lighting),
- water and waste runs in walls or floors,
- inspection and securing of existing installations.
Tiles, boxing and finish
We carry out all wet and dry work to make the kitchen practical, easy to keep clean and durable.
- tiling walls and floors (including large-format tiles),
- preparing walls for kitchen cabinets,
- skim coats and painting walls and ceilings in chosen colours,
- plasterboard boxing – hiding pipes, rails, hoods.
At the end we fit trims, silicone joints, clean up and prepare the space for installation of kitchen units.
Planning a kitchen renovation or new kitchen fit-out?
Request a kitchen quote🌡️ Underfloor heating
We design and install underfloor heating – from pipes or heating mats to connection with the heat source and system start-up.
Design and zoning
We begin by dividing rooms into heating zones and choosing the correct spacing for pipes or heating cables. We consider:
- type of floor finish (tiles, panels, resin),
- insulation of floors and walls,
- planned fixtures (fixed units, islands, baths, showers),
- existing or planned heat source (boiler, heat pump).
Water or electric systems
Depending on the building and expectations we choose:
- water systems – pipes in screed connected to manifolds and heat source,
- electric systems – mats or cables, perfect e.g. for bathrooms.
We fix pipes or mats correctly, install expansion joints at walls and thresholds and pour the screed properly.
Control and commissioning
After installation we fit thermostats and controls – from simple room regulators to multi-zone systems with scheduling.
- connection of manifolds and mixing groups,
- balancing flow on loops,
- test heating and inspection before the final floor finish.
This way the underfloor heating works evenly without cold spots or overheated rooms.
Planning underfloor heating in a house or apartment?
Request an underfloor heating quote👷♂️ About us – ZHH Zaag Hamer Huis B.V.
For over 23 years we have been carrying out complex home and apartment renovations in the Netherlands – from roof and façade through installations to turnkey finishing.
Who we are
ZHH Zaag Hamer Huis B.V. is a renovation company specialising in complex house and apartment renovations in the Netherlands. For more than 23 years we have been working on buildings from basement to roof: roofs, façades, bathrooms, kitchens, water and electrical installations, underfloor heating, walls, ceilings and finishing works.
What we specialise in
We are not a “one-room crew”. We work best where you need to combine many trades in one project:
- renovation of an entire house or apartment,
- re-planning layouts (including removal of load-bearing walls and steel portals),
- combining construction work with installations: water, heating, electricity, underfloor heating, monitoring and lighting.
How we work
We work according to Dutch standards, taking care not only of appearance but also structural safety, correct installation work and durability of materials. The client does not have to coordinate several teams – we take responsibility for the whole project, from the first visit and quote to handing over the finished interior.
Communication and pricing
Clear communication is important to us:
- first we ask what is most important for you,
- we discuss realistic scope and possible solutions,
- we arrange a site visit and prepare a quote based on the actual condition of the building.
If you are looking for a company that is not afraid of difficult renovations and can handle roof, installations, bathroom, kitchen, walls and finish in one project – ZHH Zaag Hamer Huis B.V. is here for that.
Planning a major renovation in the Netherlands and looking for one responsible company?
Arrange a quote with ZHHRequest a renovation quote
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