Render Cleaning, County Down
Holywood Softwash Cleaning, Removing Algae, Moss and Lichen from Render
Holywood sits right on the shore of Belfast Lough, and the salt in the sea air changes what takes hold on your render. As well as the usual green algae you get grey and white lichen, crusty patches that cling hard to the finish and shrug off a quick wash. Lichen is tougher and slower than algae, so it wants the right biocide left to dwell rather than a rushed blast. The homes along the coast road and up the wooded hills behind the town all see it. We give Holywood render a proper softwash with a longer dwell where the lichen is heavy, so the wall comes back clean and stays that way.
The difference
Green and black gone, render back to bright
This is what a softwash does to tired render. No high pressure, no damage, just the algae and staining lifted at the root. We get the same result on homes across Holywood.
Our render services
What we clean in Holywood
Whatever finish is on your walls, we have the right method for it.
Render & Wall Softwashing
Low pressure biocidal softwashing lifts green algae, black spotting and lichen off render without touching the finish.
Learn moreDOFF Steam Cleaning
Superheated steam restores render, stone and brick with no chemicals and no high pressure. Ideal for delicate and heritage surfaces.
Learn moreK-Rend Cleaning
Specialist cleaning for silicone and scraped K-Rend that clears the staining and restores the colour without harming the finish.
Learn morePebble Dash & Harling Cleaning
Older dash and harling finishes cleaned gently, clearing decades of growth from the texture without blasting stones loose.
Learn moreNot sure which treatment your Holywood render needs? Send us a photo and we will tell you, free.
Get My Free QuoteWhat to expect
How we clean render in Holywood
Why it greens up here
Render in County Down spends a lot of the year damp. Rain, shade and the mild Northern Irish climate let algae, lichen and black spotting settle into the surface, and north-facing gables get the worst of it. A jet wash strips the top layer and it is back within months, because the spores are never killed. That is why we do not pressure wash render in Holywood.
What we actually do
We apply a biocidal softwash at low pressure, closer to a garden hose than a jet wash. It kills the growth at the root and keeps working for days after we leave, so the finish comes back bright and stays clean for three to five years rather than weeks. Most Holywood homes are done in a single visit, we bring our own water and power, and every job is covered by our public liability insurance. You get a fixed price after a free survey, with no call-out fee.
Local questions
Render cleaning in Holywood, answered
It brings more lichen than an inland wall, which is tougher than algae, so we allow a longer biocide dwell. The finish still comes back fully clean, it just keeps working for a week or two after we leave.
No. Softwashing works at low pressure, closer to a garden hose than a pressure washer. The cleaning is done by a biocidal solution, not by force, so it lifts algae and staining without eroding the finish or forcing water into the render.
Because we kill the growth at the root rather than just blasting the surface, a softwash typically stays clean for three to five years. Pressure washing only clears the top layer, so it often comes back within six to twelve months.
It depends on the size of the property, the level of growth and the access, but a typical three bed semi starts from around 200 to 400 pounds. We give you a clear fixed price after a free survey, with no call-out fee.
Most homes are treated in a single day. Heavier growth sometimes needs a return visit, because the biocide keeps working and clearing for days after we apply it.
No. We arrive fully self-contained with our own water and power, so there is nothing you need to provide on the day.
It kills what is there now at the root. Render will always be exposed to the Northern Irish weather, so growth returns eventually, but far more slowly than after a pressure wash. Many customers have us back every few years to keep it fresh.
Yes, and those are the walls that need it most. North-facing gables get the least sun and stay damp longest, so they green up fastest. The softwash treats them the same way, just with the right dwell time for heavier growth.
Yes. Older dash and harling finishes clean up really well with a softwash. Because there is no high pressure involved, we clear the growth from the texture without knocking stones or chips loose.
For most Northern Irish homes, every three to five years keeps it looking right. If a wall is heavily shaded or near trees it may green up sooner, and we can advise once we have seen it.
Yes. We are Safewash certified, City and Guilds qualified, COSHH certified and carry two million pounds of public liability insurance. We have been cleaning exteriors across Northern Ireland since 2003.
Also serving nearby towns across County Down. See the full County Down coverage.
Get your Holywood render cleaned
Send a photo and your postcode for a fast, no obligation quote. We cover Holywood and all of County Down.