Full Bathroom Renovation
Complete bathroom rebuild, with waterproofing carried out before the new tiles go up.
Membrane Tanking Before Tiling
Bathroom & Kitchen Waterproofing
in Valencia
Bathroom and kitchen waterproofing in Valencia — a continuous membrane applied to floors and walls before tiling, not an optional extra on top of the finish.
We tank the floor and shower or bath walls, seal every corner, joint and pipe penetration, and photograph the finished membrane before it disappears under your new tiles, so wet areas stay watertight for the life of the renovation.
Waterproofing Before Tiling
Bathroom & Kitchen Waterproofing Valencia, Spain
Looking for bathroom or kitchen waterproofing in Valencia, Spain? squaremeter Reformas applies a continuous waterproof membrane, known locally as impermeabilización, to the floor and lower walls of wet rooms before any tiling begins. It is the layer that actually keeps water out of the floor slab and walls — the tile and grout on top are decorative, not watertight, on their own.
- ✓ Waterproofing for full bathroom and kitchen renovations
- ✓ Liquid and sheet membrane systems, matched to the substrate
- ✓ Corner tape and reinforcement at every wall-floor junction
- ✓ Photo record of the membrane before it is covered by tiles
- ✓ Clear quote before any tiling work begins
Bathroom & Kitchen Waterproofing Valencia
From Bare Substrate
to Watertight Membrane
Step 1
Initial
Consultation
We discuss the room, whether it is a full renovation or a re-tiling job, and your timeline.
Step 2
Substrate
Inspection
We check the floor and wall surface, drain position and any existing damp or leak history.
Step 3
Clear Quote
You receive a detailed quote covering the area, membrane type and full scope of work.
Step 4
Surface
Preparation
We clean, prime and reinforce corners and joints so the membrane bonds evenly.
Step 5
Membrane
Application
We apply the waterproofing in multiple coats, sealing drains, corners and pipe penetrations.
Step 6
Testing &
Sign-Off
We check the membrane, document it with photos, then hand the room over ready for tiling.
Request Your Waterproofing Quote
Membrane tanking before tiling. Clear quotes.
Photo-documented before it's covered.
Photo-documented before it's covered.
The Layer Under Your Tiles
What Is Included in Bathroom & Kitchen Waterproofing Valencia?
Waterproofing is not a single coat of paint under the tiles. Done properly, it is a system of membrane, reinforcement and sealing at every weak point in the room.
- ✓ Full floor waterproofing membrane
- ✓ Wall waterproofing to at least 1.8–2m around showers and baths
- ✓ Reinforcing tape at every wall-to-floor junction and corner
- ✓ Sealing around drain, pipe and fixture penetrations
- ✓ Waterproofing under wall-hung basins and concealed cisterns
- ✓ Kitchen sink wall and appliance zone waterproofing
- ✓ Shower tray and bath upstand sealing
- ✓ Threshold sealing where a wet room adjoins a balcony or terrace door
- ✓ Work in line with Spain's CTE DB-HS1 damp-proofing requirements
- ✓ Visual check of the finished membrane before tiling starts
- ✓ Photo record kept on file once the membrane is covered
Protecting Wet Areas in Valencia Apartments
Protecting Your Home —
and the Apartment
Below It
In a block of flats, a poorly waterproofed bathroom does not just risk damage to your own property. Water that gets past the tile and grout works its way down through the floor slab and can stain or damage the ceiling of the apartment underneath, which is one of the most common causes of disputes between neighbours in Spanish buildings. Proper waterproofing before tiling is the main defence against that scenario.
- ✓ Full bathroom renovations
- ✓ Kitchen renovations with a wet zone
- ✓ Older properties never properly waterproofed
- ✓ Apartments where a leak could affect the flat below
- ✓ Pre-sale renovations resolving a past leak history
- ✓ En-suite bathrooms and utility rooms
Leak Protection
Built In
Built In
Not Always a Full Membrane Job
Sealant & Caulking in Valencia
When Resealing Is Enough Instead of Waterproofing
If your tiling is sound and the only problem is a cracked or mouldy seal around the bath, shower tray or sink, a full waterproofing job is more than you need. In that case we will say so honestly and point you to Sealant & Caulking, part of our Small Repairs services, which can freshen up the seal without lifting a single tile.
- ✓ Replacing cracked or mouldy silicone around a bath or shower
- ✓ Resealing a sink or worktop joint in the kitchen
- ✓ Fixing a localised seal failure without removing tiles
- ✓ A same-day fix for a small, isolated problem
- ✓ Keeping costs down when a full membrane isn't needed
Waterproofing Contractor in Valencia
English-Speaking
Waterproofing Team in Valencia
squaremeter Reformas is a renovation company in Valencia that treats waterproofing as a stage worth explaining, not rushing past. We show you the membrane before it's covered, keep a photo record on file, and agree the scope of work with you before any tiling begins.
- English-speaking team
- Local waterproofing experience in Valencia
- Clear communication
- Photo record kept before tiling covers the membrane
- Work in line with Spain's CTE DB-HS1 code
- Work on apartments, houses and commercial units
- Help for expats and foreign property owners
💬
English-
speaking team
☎
Clear
communication
📋
Photo record
before tiling
Waterproofing
Contractor in Valencia
▣
Membrane &
tanking systems
🏠
Local Valencia
experience
✈
Expat & foreign
owner support
Bathroom & kitchen waterproofing Valencia · impermeabilización before tiling · English-speaking team
Local & International Clients
Bathroom & Kitchen Waterproofing Across Valencia
Wet Room Waterproofing for Local and International Clients
If you are looking for bathroom or kitchen waterproofing in Valencia, our team takes care of the whole process, from surface preparation to a documented, tiling-ready membrane. We carry out waterproofing projects in Valencia, Mislata, Paterna, Torrent, Burjassot, Alboraya, Manises, Quart de Poblet, Xirivella and Paiporta, combining local experience with clear English communication for homeowners, investors and expats.
Related Major Renovation Services in Valencia
Services That Often Go Alongside Waterproofing
Waterproofing is almost always one stage inside a larger project — see the related renovation services below.
Full Kitchen Renovation
Kitchen rebuild including waterproofing behind the sink and appliance zones.
Full Plumbing Replacement
New supply and drain lines, usually finished before waterproofing starts.
Turnkey Apartment Renovation
Full apartment renovation, with waterproofing built into the wet room stages.
Demolition & Strip-Out Works
Stripping out the old bathroom or kitchen down to bare substrate first.
Fire, Flood & Damage Restoration
Re-waterproofing is often required before retiling a room after water damage.
Pre-Sale Renovation
Proper waterproofing helps resolve leak history before a property goes on the market.
Understanding the Cost
Bathroom & Kitchen Waterproofing Valencia Prices
What Affects the Final Waterproofing Cost?
The price of bathroom or kitchen waterproofing in Valencia depends on the room size, how much wall area needs treating, the substrate condition, the number of drains and pipe penetrations to seal, the membrane system used, and whether the work is part of a larger renovation.
Room size
Wall area to treat
Substrate condition
Membrane type
Number of penetrations
Access & drying time
Project complexity
A Layer You Never See Again
Why Choose squaremeter Reformas for Bathroom & Kitchen Waterproofing Valencia?
Careful Preparation, Documented Work and Local Experience
- ✓ We handle waterproofing as a stage of its own, not an afterthought
- ✓ We follow Spain's CTE DB-HS1 damp-proofing requirements
- ✓ We photograph the membrane before it is covered by tiles
- ✓ We provide clear explanations before starting work
- ✓ We can help English-speaking clients throughout
- ✓ We coordinate waterproofing with plumbing, tiling and finishing trades
- ✓ We provide a clear quote for the agreed scope of work
Local Insight
Why Waterproofing Matters More in a Building of Flats
In Spain, if a leak from your bathroom or kitchen damages the ceiling of the apartment below, you can be held responsible for the repair, and your home insurance (seguro de hogar) may dispute the claim if the underlying cause turns out to be missing or inadequate waterproofing rather than a one-off accident. If the leak involves a shared pipe or affects communal areas, the comunidad de propietarios — the legal community made up of all the owners in the building — can also become involved. Proper waterproofing before tiling, backed by a photo record of the finished membrane, is the simplest way to avoid that situation altogether.
Client Reviews
Real Feedback from Our Clients
Read all reviews on Google Maps →
★★★★★
Highly recommended. A serious and trustworthy company with high-level professionals who really know what they're doing. The prices are reasonable and fair.
★★★★★
Redid our bathroom waterproofing and tiling after a leak into the flat below. They explained every layer before it was covered and even sent photos of the membrane. No issues since.
★★★★★
Hired this company for renovation — very satisfied. They stuck to the timeline, the team was polite and careful. Minor questions came up during work, but they solved them quickly without unnecessary disputes.
Bathroom & Kitchen Waterproofing
FAQ
What is bathroom and kitchen waterproofing and why is it needed before tiling?
Waterproofing, called impermeabilización in Spain, is a continuous membrane applied to the floor and lower walls of a wet room before any tile is laid. Tiles and grout are not watertight on their own, so without a membrane underneath, water from showers, spills and condensation can work its way through joints and into the floor slab, eventually reaching the ceiling of the property below.
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Do kitchens really need waterproofing, or is that just for bathrooms?
Kitchens need it too, though usually over a smaller area. The wall behind the sink, the zone under and around the dishwasher and washing machine, and the floor near these appliances are all exposed to regular water contact and occasional leaks, so we waterproof those zones before tiling even though the whole kitchen floor is not always treated.
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How long does waterproofing take before tiling can start?
Applying the membrane itself typically takes one to two days, but most systems need multiple coats with drying time between each one, plus a further curing period before tiling begins. In total, budget around three to five days between finishing demolition and starting tile work, depending on the product used and the room's humidity.
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What happens if waterproofing is not done properly?
A leak that damages the ceiling or walls of the flat below is a common and often expensive dispute between neighbours in Spanish apartment buildings. If the origin of the leak is traced to inadequate waterproofing in your bathroom or kitchen, your home insurance (seguro de hogar) may be able to refuse the claim or seek reimbursement from you, and the comunidad de propietarios, the legal community of all owners in the building, can also become involved if communal pipework is affected.
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Can waterproofing be added to an existing bathroom or kitchen, or does it need new tiles?
Waterproofing has to go under the tile, so it cannot be added without lifting the existing tiling first. If your current tiles are sound and you only need to top up a seal around the shower tray or bath, a smaller sealant repair may be enough instead; if the tiles are coming up as part of a renovation anyway, adding proper waterproofing at that stage is the right time to do it.
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Start Your Waterproofing
Project in Valencia
Planning a bathroom or kitchen renovation in Valencia? Contact squaremeter Reformas and tell us about your project. We will review the room, explain the waterproofing options and prepare a clear quote for the work.