Rising damp, condensation or rain getting in: in Hull the marks on a wall look alike, but each needs its own treatment. That's why we always start with a survey at your property.
Book your free damp survey in Hull
Tell us what you've noticed and where the property is. A surveyor calls you back, usually within one working day.
Call or message us and we'll arrange your free survey.
Call Message us on WhatsApp Email [email protected]Your details are only used to arrange the survey · Privacy notice
In Hull a damp wall can have very different causes: water rising from the ground in ground-floor rooms and older buildings, moisture condensing in rooms that don't get enough fresh air, or rain getting in through walls, roofs and windows. The signs look alike, the fixes don't. So we don't sell a standard treatment: we read the signs, work out the cause and only then decide what to do.
The right treatment always depends on the right diagnosis. This is how to tell them apart.
A tide line along the bottom of the wall, white salts, bubbling paint and crumbling plaster. It's there all year round, whatever the weather.
The HUMIX fixThe HUMIX system treats rising damp in cases confirmed by the survey, without cutting into the wall.
Black mould in corners and on ceilings, streaming windows in the morning, a musty smell and cold walls. Worse in winter and after showers or cooking.
The HUMIX fixHUMIX ventilation, sized for your home and the fresh air it needs.
Irregular patches that appear or spread after rain, linked to a wall, roof, window, gutter or a specific building detail.
Our approachWe find where the water gets in and fix that point, so you're not repairing the surface again and again.
Much of Hull sits on flat, low-lying land beside the Humber estuary, and a large share of its homes are Victorian and Edwardian terraces with solid brick walls. Put together, that means ground-floor walls that stay damp for longer and older damp-proof courses that are often bridged or failing.
Where the ground stays wet for long periods, walls without a working damp-proof course draw moisture up more easily. Rooms at ground level and back extensions usually show it first.
Terraced houses built before the First World War usually have solid brick walls with no cavity. They get colder in winter, which also makes condensation and black mould more likely on outside walls.
After a leak or a flood, a solid wall can take many months to dry out and the salts stay behind in the plaster. Telling leftover moisture apart from active rising damp saves money on the wrong treatment.
Pick the area and we'll pass it to the surveyor with your request.
Tenant reported damp or mould? We survey the property, explain the cause and recommend a fix you can act on quickly.
Solid walls, lime plaster and possible listing: we start with a survey that respects how the building was made.
Rows of Victorian and Edwardian terraces with solid brick walls, bay-fronted villas along the Avenues and homes on low-lying ground beside the Humber. These older houses behave very differently from a modern cavity-wall home, and need treating accordingly.
Simplified diagram. Every building is different: wall thickness, mortar type and salt content completely change which treatment is right.
Many homes built before the late 1800s have no damp-proof course at all. In later Victorian houses the original slate or bitumen course can crack, or be bridged by raised ground, paths or render. Water then rises through the pores of the brick, stone and mortar until it finds somewhere to evaporate.
Rising water carries nitrates, sulphates and chlorides. As it evaporates it leaves them in the plaster: white deposits, crumbling and blown plaster that come back after every redecoration, because paint was never the cause.
Patching an old solid wall with cement or gypsum seals it in: damp climbs higher and salts gather at the edge of the repair. Older walls are best repaired with breathable, lime-based plasters that suit the original construction.
The HUMIX system works on rising damp without cutting into the wall, without injecting chemicals along it and without stripping existing finishes. That matters where every change to the surfaces has to be agreed and recorded.
Listed buildings and conservation areas. If the property is listed, work affecting its walls, plaster or finishes may need listed building consent from your local planning authority (guidance from Historic England). In a conservation area, check with the council's conservation officer first. We go through your property's status with you before recommending any work, and if in doubt the check should be made with the council.
No one-size-fits-all promises: we only choose a system once we know what's happening in the wall.
Recommended when the survey confirms rising damp in the wall.
Ventilation and fresh air exchange to bring indoor humidity down and stop mould at the source.
It doesn't replace a survey, but it tells you where to start looking.
Choose an answer for both questions.
It shows at the bottom of the wall with a fairly even tide line, white salty deposits, paint that bubbles and plaster that crumbles. It doesn't depend on the weather and comes back every time you redecorate.
Yes. Older walls in solid brick with lime mortar and plaster need a different approach from a modern house: we work without cutting into the wall and without knocking anything down. If the building is listed or in a conservation area, some work may need consent from the local planning authority, so we check that with you first.
Because the plaster is the symptom, not the cause. While water keeps rising and carrying salts, any new finish breaks down. If the repair was done in cement render or gypsum plaster, which don't let the wall breathe, the damp can climb even higher.
Often, yes. Moisture from cooking, showers, drying clothes and breathing builds up and settles on the coldest surfaces: corners, ceilings and around windows. It's solved with ventilation and air exchange, not by treating the wall.
Mould can affect health, especially for people with asthma, allergies or breathing problems, babies and young children and older people. Cleaning it off rarely stops it coming back: what matters is removing the moisture that feeds it.
Hull and nearby: Hessle, Cottingham, Anlaby, Kirk Ella, Willerby and Hedon and surrounding areas (HU1–HU10, HU12, HU13, HU16). If you're not sure we cover your street, get in touch and we'll confirm straight away.
Yes. The first survey is free with no obligation. It's there to find the cause and tell you whether we can help. If the problem is outside what we do, we'll tell you.
Yes. We survey rented homes, including when a tenant has reported damp or mould, and explain the cause and the recommended fix clearly so you can act quickly. In England, social landlords must now investigate and fix damp and mould within set timescales under Awaab's Law.
Fill in the survey form and a surveyor will call you back, or contact us directly. Tell us what you've seen and we'll tell you what to look at first.
Hull, Hessle, Cottingham, Anlaby, Kirk Ella, Willerby and Hedon
HU1–HU10, HU12, HU13, HU16
