Investigate · Treat · Repair · Finish
Damp Proofing Benidorm
Damp proofing for Benidorm apartments, ground-floor units, terraces and villas — with condensation told apart from damp properly.
Benidorm is dominated by apartments, and that changes the damp work almost completely.
In a town where a large share of the property is let, used seasonally or shut up between visits, the most common problem we are called to is not water coming through the structure at all. It is condensation, and the black mould that follows it.
That does not mean penetrating damp and leaking terraces do not happen here. They do, constantly — and in a block they raise a question a villa never does, which is whose wall it actually is.
Closed-up flats
Condensation and Black Mould in Apartments
An apartment that is shut for weeks at a time with no air moving through it will produce condensation regardless of what the weather is doing outside. Moisture from the last occupants, from the bathroom, from a kitchen with no working extract, simply sits there and condenses on the coldest surfaces.
A single-aspect flat makes it worse. With windows on one elevation only there is no cross-ventilation to carry moisture out, and the internal bathroom that comes with that layout is relying entirely on a fan that may or may not still work.
The signs are consistent: black mould around window reveals, in ceiling corners, on the external corners of rooms, and on the wall behind a wardrobe or a sofa pushed up against an outside wall.
Treating that as rising damp is money spent on the wrong problem, and the mould usually returns. What it actually needs is a ventilation answer, the mould dealt with properly, and in some cases work on the cold surfaces it is forming on.

Whose wall is it
Comunidad Property, Private Property and Who Pays
This is the part that catches people out in a block, and it is worth understanding before you spend anything.
In a Spanish comunidad de propietarios, the structure, the facade, the roof and the communal decks are generally the community's responsibility, while what is inside your own front door is yours. So a leak that originates in a communal terrace deck or a failed facade joint, and shows up as damage in your bedroom, is not necessarily a bill you should be paying on your own.
What settles it is evidence: where the water is actually getting in, rather than where it is appearing. That is exactly what a survey produces — a written account of the likely source, with photographs, which you can put in front of the administrator or the community.
We are damp and building contractors, not a loss adjuster and not your lawyer. But finding and recording the source is the same job either way, and it is a good deal easier to have that conversation with the community holding a report than a suspicion.
Ground floors
Ground-Floor Apartments and Commercial Units
Ground-floor flats and the commercial units beneath the blocks have their own version of the problem. Floors and walls sitting at or just below the level of the ground and paving outside can draw moisture, and there is usually no damp proof course to stop it.
These are also the units most likely to have been fitted out several times over, which means previous finishes, previous coatings and previous attempts at a fix all sitting on top of each other.
We take that back to what is actually going on before recommending anything.
How it works
How a Damp Survey in Benidorm Works
In a Benidorm flat the two questions that settle most of it are whether the damp gets worse after rain, and whether it is worse after the property has been shut up for a while. The first points outside and often at communal structure; the second points at ventilation.
From there we say what we think is causing it and recommend something proportionate — occasionally a smaller job than expected. Diagnosis → Treatment → Repair → Finishing, with the replastering and decorating afterwards part of the same job. The survey and the quotation cost you nothing, and the work is guaranteed.
Questions
Damp Proofing Benidorm — Common Questions
Most of the damp in our Benidorm apartment is black mould. What causes it?
In an apartment, that is usually condensation rather than water coming through the building. A flat that is closed up between visits, with limited ventilation and often windows on one side only, produces moisture that condenses on the coldest surfaces - window reveals, ceiling corners and walls behind furniture.
Water is coming into our flat from the terrace above. Who is responsible?
It depends where the water is getting in. Communal decks, the facade and the structure are generally the comunidad’s responsibility, while the inside of your own flat is yours. We are contractors rather than adjusters, but the survey gives you a written account of the likely source with photographs, which is what the administrator will want to see.
Do you work on holiday apartments that are empty most of the year?
Yes, and they are some of the most common. A property standing closed for long periods is exactly the situation that produces condensation, so the answer often involves ventilation as much as any damp treatment.
Across the area
Damp Proofing in the Surrounding Towns
Benidorm is one of nine towns with its own damp proofing page. The main Damp Proofing Costa Blanca page covers every treatment in full.
Damp Proofing Calpe
Damp surveys, waterproofing and remedial building work in Calpe and the surrounding area.
View Calpe →Damp Proofing Altea
Damp surveys, waterproofing and remedial building work in Altea and the surrounding area.
View Altea →Damp Proofing La Nucía
Damp surveys, waterproofing and remedial building work in La Nucía and the surrounding area.
View La Nucía →Damp Proofing Finestrat
Damp surveys, waterproofing and remedial building work in Finestrat and the surrounding area.
View Finestrat →Damp Proofing Villajoyosa
Damp surveys, waterproofing and remedial building work in Villajoyosa and the surrounding area.
View Villajoyosa →Damp Proofing Alfaz del Pi & Albir
Damp surveys, waterproofing and remedial building work in Alfaz del Pi & Albir and the surrounding area.
View Alfaz del Pi & Albir →Damp Proofing Polop
Damp surveys, waterproofing and remedial building work in Polop and the surrounding area.
View Polop →Damp Proofing Callosa d'en Sarrià
Damp surveys, waterproofing and remedial building work in Callosa d'en Sarrià and the surrounding area.
View Callosa d'en Sarrià →Get in touch
Damp, Mould or Water Coming In — in Benidorm?
If you have damp, black mould, peeling paint, blown plaster or a musty smell that keeps coming back in a Benidorm property, we will come and look at it and tell you what we think is causing it.
Villa, finca, town house, apartment or underbuild.
More from Dragon Reforms
Other Services in Benidorm
Everything Dragon Reforms does in Benidorm, each with its own page.
- Property Renovations Benidorm
- Kitchen Renovations Benidorm
- Bathroom Renovations Benidorm
- Villa Renovations Benidorm
- Apartment Reforms Benidorm
- Builders Benidorm
- Terrace Renovations Benidorm
- Plumbing Services Benidorm
- Electrical Services Benidorm
- Carpentry Services Benidorm
- Painting & Plastering Benidorm
- Windows & Doors Benidorm
- Air Conditioning Benidorm
- Disability Living Benidorm
Get a quote
Get Your Free Damp Survey and Quotation
Tell us where the damp is and what the property is. We cover Benidorm and the surrounding north Costa Blanca, and the survey and quotation cost you nothing.
- Phone
- 0034 639917798
0034 669261858 - +34 639 91 77 98
- dragonreforms@gmail.com
- Address
- Calle San Isidre No 8, Pl 1 Dr
03510 Callosa de Ensarrià, Alicante - Hours
- Monday to Saturday, 9am–8pm