West Sussex, BN11 to BN14
Worthing damp proofing for pebbledash semis and seafront flats
The Brighton Plasterer covers damp proofing throughout Worthing and the BN11 to BN14 postcodes. On this open stretch of coast most damp turns out to be rain driven through failed pebbledash or condensation in a sealed flat, so James diagnoses the cause before quoting any injected course, tanking or re-plaster.
Damp Proofing in Worthing, and what is different about it
Worthing faces due south into the Channel with nothing in the way, and its housing is largely interwar semis finished in roughcast. After ninety winters that render is crazed and hollow in places, and rain finds every one of them. Most of the damp James is called to in BN11 through BN14 comes through a wall from outside rather than up it from below.
Three things account for most of it. First, cracked or debonded roughcast on a 1930s semi in Goring, Durrington or West Worthing, where water gets in behind the render and then has no way back out. Second, the early cavity walls of that era, which are narrow and often fouled with mortar droppings on the ties, giving moisture a bridge straight across to the inner leaf. Third, condensation, which is rife in the seafront blocks and converted houses along the Brighton Road where windows stay shut through the winter and there is no background ventilation at all.
Sorting one from another is largely observation. A wall that darkens a day after a south-westerly and dries out in a settled week is taking water through the render, and tapping the elevation finds the hollow areas doing it. A cavity bridge tends to show as an isolated damp patch part way up the wall with dry brickwork below it. Condensation collects on the coldest surfaces, so it appears in corners, behind furniture on outside walls and around window reveals, and it is worst in the rooms nobody heats. James measures, taps and asks rather than assuming.
The right answer in Worthing is therefore an external one more often than not. Failed roughcast is either patched where the failure is local or taken off and replaced with a through-coloured silicone system that sheds water and needs no repainting. Once the wall can dry, the inside is hacked back and re-plastered in a salt-resistant renovating system where old salts have contaminated the surface. Where a genuine course failure is found in one of the town's older solid-walled properties, it is injected and re-plastered in the usual way. Condensation gets extraction and airflow, not a chemical.
Also covered from Worthing: Lancing, Goring-by-Sea, Durrington, Sompting, Findon. For the full picture of Worthing and every service there, see the Worthing page.
What Worthing needs watching for
Render tapped, not guessed
Hollow roughcast sounds different under a knuckle. The whole elevation gets tapped so the failed areas are mapped before anyone decides between a patch and a full re-render.
Cavity bridging looked for
Interwar cavities here are narrow and frequently fouled with mortar on the ties. An isolated damp patch high on a wall usually means a bridge rather than a failed course.
Flats without airflow
Many seafront and converted flats have sealed units, no trickle vents and no working extractor. Fixing the airflow removes the mould more reliably than anything applied to the plaster.
Damp Proofing nearby
How the job runs
Step by step in Worthing
The order below is how a damp proofing job actually runs on the kind of property Worthing is made of. For the full method and the materials behind it, see the damp proofing page.
01Readings and a tap test
Moisture is measured up the affected wall inside, and the render outside is tapped across the elevation to find the debonded areas letting water through.
02Weather pattern established
James asks when the damp appears and how quickly it fades, because rain-driven damp follows the weather while a failed damp course simply sits there all year.
03External fault put right
Cracked or hollow roughcast is patched or replaced, pointing and seals are made good, and the wall is given a chance to dry before internal work starts.
04Re-plaster once dry
Contaminated plaster comes off and a salt-resistant renovating system goes on, with a realistic drying period quoted before the room is decorated.
Straight answers
When it is not the right answer here
- If the damp is at its worst the day after a storm and eases in a dry spell, it is the render and not the damp course.
- Mould around window reveals and in unheated corners is condensation, and extraction and heating solve it far more cheaply.
- A blocked gutter over a bay window will soak the wall below it indefinitely, whatever is injected into the brickwork.
Damp Proofing, Worthing
Damp Proofing in Worthing, questions answered
What people in Worthing ask before booking damp proofing, answered properly rather than in one line.
Is my Worthing damp coming through the pebbledash or up from the ground?
The timing usually gives it away. Damp that appears after wind-driven rain and fades in a dry week is coming through the render. A failed course produces a steady tide mark near the floor that barely changes with the weather.
Can damp get across the cavity in a 1930s Worthing semi?
Yes, and it happens more often than people expect. Those early cavities are narrow, and mortar dropped onto the wall ties during building forms a bridge. The result is a damp patch part way up the wall with dry brickwork underneath it.
Why is my Worthing flat mouldy even though the walls are dry?
Because the moisture is in the air rather than the fabric. Cooking, washing and breathing put litres of water into a flat every day, and with sealed windows and no extraction it settles on the coldest surfaces. That is condensation, and airflow is the answer.
Does re-rendering a Worthing house cure damp on its own?
It does if the render was the route the water was taking, which on this coast it frequently is. It does nothing at all if the cause is a bridged course, a blocked gutter or condensation, so the diagnosis has to come first.
How soon can I decorate after damp work in Worthing?
The wall has to give up the water it has been holding, and that takes weeks rather than days. James will give you a realistic date for the specific wall, and a breathable paint for the first period lets the drying carry on.
What does a damp survey in Worthing involve?
Moisture readings at intervals up each affected wall, a tap test across the render outside, a look at gutters, downpipes, pointing and ground levels, and a conversation about heating and ventilation. It is free, and the findings are given to you straight.
Do older solid-walled houses in Tarring need a different approach?
They do. Genuine period fabric around the old village core is lime built and needs to breathe, so a hard cement repair or a modern gypsum plaster causes problems later. Lime materials and a breathable finish are specified there instead.
Should cavity wall insulation be removed if my wall is damp?
Sometimes, on a badly exposed elevation where the fill has slumped or is carrying water across the cavity. Assessing what is actually in the cavity is a specialist inspection, and James will tell you when that is the sensible next step rather than plastering over the symptom.
Damp Proofing in Worthing? Call James
Free quotes across Worthing and Lancing, Goring-by-Sea, with a written price before anything starts.