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Soft Wash Treatment · Buckinghamshire

Soft Wash Treatmentin Penn

Penn's flint and brick cottages, painted render and older houses along the ridge were built with materials that a jet would scour. We soft wash them with a low-pressure solution, rinse gently and finish with Chiltern EverGuard™.

  • Flint, brick and lime joints
  • Painted cottages and render
  • Woodland shade considered
Brick ramp wall and railings after soft washing, the brickwork clean and even

Our approach

Old walls ask for patience not pressure

Many walls in Penn were built long before cement mortar and hard modern renders. Flint panels, handmade brick, lime pointing and painted render are meant to let moisture out and to weather slowly, and a high-pressure jet strips away exactly what holds them together. Soft washing relies on a solution and on time instead, and we confirm at a free site visit that each surface suits it.

A chilterns Beech Wood in spring

Penn homes

Flint, brick and clay on a wooded Chiltern ridge

Penn sits high in the Chiltern Hills, its houses strung along a ridge with commons, beech woodland and old hedgerows around them. Much of the village core lies within the Penn and Tylers Green conservation area, and the trees that give it character also keep many walls in shade, so algae, moss and lichen settle on the sides that face the woods or the north.

Building materials here are traditional. Flint laid with brick dressings appears on cottages, garden walls and larger houses, some older buildings have timber framing or render, and plain clay tiles are tied to the area's long history of tile making. Later detached homes and modern family houses sit alongside them, so a single lane can hold several quite different walls, each assessed in its own right.

Flint and brick

Cleaning flint panels without losing the joints

In a flint wall the mortar does much of the work, and in older buildings that mortar is lime. It is softer than the flint and the brick around it by design, so that moisture escapes through the joints rather than through the stone.

Moss and lichen root into those joints and the brick quoins hold green film, but forcing them off with pressure washes the mortar out with them. With a soft wash, the solution works on the growth while the rinse stays gentle. Where joints are already open or crumbling, we recommend a builder experienced with lime before any cleaning goes ahead.

Cottages and render

Painted and rendered cottages near the woods

Older cottages and some larger houses carry render or paint over brick and timber, and these are often the walls that sit closest to hedges and trees. Shade and slow drying let algae spread across them in a green or grey film.

Before treating, we check that the coating is sound, because a soft wash cleans paint that is well bonded but cannot hold together paint that is already flaking. On sound surfaces the colour usually returns evenly once the growth has been treated and rinsed away.

Conservation area

Working on older and protected buildings

In a conservation area, and on any listed building, what may be done to the fabric is a matter for the owner and the local planning authority. Cleaning with a low-pressure solution leaves the surface itself intact, which is why it suits these buildings.

We still identify the materials, note any earlier repairs and tell you if something looks as though it needs specialist advice. If a wall would be better left alone, we will say so rather than clean it.

Protection

Chiltern EverGuard™ Treatment once the wall is clean

The final stage of every soft wash is the Chiltern EverGuard™ Treatment, applied to the cleaned surface to work on remaining spores and residual growth. It helps reduce how quickly algae, moss and lichen come back.

Protection typically lasts between 12 and 24 months, depending on the location, the surroundings, the surface and how it is maintained. In a village enclosed by beech woods, the shadiest walls will usually be at the shorter end.

Step by step

How we soft wash a traditional wall

Older buildings take more care at every stage. The steps are the same as on any house, but each is slower and more deliberate.

  1. 01

    Identify the materials

    At a free site visit we establish whether a wall is flint, brick, stone, render or timber, check the mortar and coatings, and name the growth on it.

  2. 02

    Protect planting and joinery

    Cottage borders, climbers, lawns, glass and painted joinery are covered or soaked with clean water so the solution only touches the wall being treated.

  3. 03

    Apply and wait

    The solution is applied at low pressure and given time to break down algae, moss and lichen, rather than relying on force to remove them.

  4. 04

    Rinse with care

    The wall is rinsed gently from the top down, with the pressure kept low enough to leave lime joints and soft brick faces undisturbed.

  5. 05

    Protect and explain

    Chiltern EverGuard™ is applied once the surface is clean, and we explain what was done and which older marks may keep fading as they weather.

Know the limits

Character stays, growth goes

A soft wash removes organic growth and makes a significant improvement to stained flint, brick and render. It will not, and should not, strip away the weathering that gives an old wall its character.

  • Open or crumbling lime joints need repointing, not cleaning
  • Flaking paint and loose render need a decorator or renderer
  • Old lichen marks set into the surface may lighten only partly
More about soft wash treatment

Proof of work

Soft Wash Treatment projects near Penn

View all projects
  • Brick retaining wall and railings beside the front steps of a house in Beaconsfield, darkened by black algae before soft washing
    The same brick retaining wall in Beaconsfield after soft washing, the red and blue brick and pale mortar joints visible again

    Brick Cleaning and Soft Washing in Beaconsfield

    Brick cleaning and soft washing in Beaconsfield: black algae and lichen treated on brick retaining walls and copings, then rinsed at low pressure.

Why us

Why owners of older homes call us

  • Traditional materials respected

    Flint, handmade brick, lime mortar and old render are cleaned with a solution and time, never scoured with a jet.

  • Honest assessment

    If a wall needs repair first, or would be better left alone, we say so at the site visit rather than clean it anyway.

  • Gardens looked after

    Borders, climbers and lawns close to old walls are covered or wetted before we start and rinsed again when we finish.

  • Fully insured

    Fully insured operatives, based nearby in Marlow, who explain the work and leave the property tidy.

Nearby

Soft washing in the villages near Penn

We also look after homes in Tylers Green, Knotty Green, Forty Green, Penn Street, Hazlemere and Holmer Green. Flint, brick and older render appear in many of them too, alongside newer houses.

Soft Wash Treatment in nearby towns

What Clients Say

Trusted by homeowners across Buckinghamshire, Berkshire, and Oxfordshire.

Thank you to every client who has trusted us with their home. Your reviews mean a great deal to us. We’re proud to be fully insured, certified professionals — delivering proven results with a customer-focused approach on every single project.

5-Star Rated On Google

  • “Highly knowledgeable and kept us informed throughout the whole process.”
    DWDean WilliamsonMarlow
  • “Jon was very professional and knew exactly what was required.”
    DRDavid ReynoldsMarlow
  • “Incredibly, Jon managed to get it gleaming again. I'm thrilled with the results.”
    AWAnna WilliamsonMarlow
  • “They did a great job cleaning my patio & front driveway in Marlow, very attentive to detail & prompt.”
    TMTom McGrath
  • “I couldn't be happier with the service from Jon, this Marlow Company provided.”
    TDTina Devereux
  • “Jon Did a fantastic job of the driveway and walls.”
    TATim Anders
  • “I cannot recommend Chiltern surface co highly enough!”
    TGThe Gentry Marlow
  • “John spent a few hours cleaning and jet washing my drive, wow an amazing job.”
    SSStuart Singer
  • “Highly recommended! The quality of the work was excellent from start to finish.”
    SMSara Maio
  • “Absolutely brilliant! Jon was absolutely fantastic in communication.”
    RURuby Uppal
  • “Highly please with the result of the roof clean”
    RDRobert Daly
  • “I recently had the chiltern surface co team round to my house in Marlow to clean our patio and driveway.. Really happy with the results! The driveway and back patio are looking brand new. Definitely recommended!”
    RKrobbie kneen
  • “Fantasitc company, fantastic job, couldn't recommend more.”
    RHRichard Hobbs
  • “Chiltern Surface Co. were amazing. The men worked really hard in extreme heat and were very respectful of our property”
    ODOlwyn Davison-Oakley
  • “Absolutely brilliant service received from this company.”
    NCNigel Crow
  • “Highly recommend Jon and the Chiltern Surface Co team. They did a fantastic job cleaning, treating and re-sanding.”
    NPNicola Padbury
  • “My roof had been an issue for years with the build up of moss.”
    NNicola
  • “A huge thank you to Jon and the team at Chiltern Surface Company for the outstanding job they've done.”
    NMNick Marr
  • “Chiltern Surface Co. did an outstanding job cleaning our patio.”
    NCNeylan Cankurtaran
  • “Jon did a wonderful job cleaning and treating our roof which had been in a terrible state. He was meticulous and professional throughout, we absolutely cannot fault the service. Would highly recommend.”
    LSLouise Scully
  • “Jon and his team were professional, tidy and did a great job. We had the gutter cleaning service”
    KCKate CT
  • “An excellent service from start to finish. The patio was in quite a state and now it looks as good as new.”
    JSJulie Simpson
  • “I didn't realise just how dirty my patios and driveway had become over the last 4 years.”
    JHJohn Holmes
  • “Excellent and professional work from start to finish. Both our patio and roof now look fantastic. Highly recommended!”
    JPJames Phillips
  • “Solid work on our guttering and cleaning patio stones. Jon and his team worked hard during the day with some really good results to show.”
    GGordon
  • “I couldn't be happier with the patio cleaning service. Years of dirt and stains were completely removed.”
    GSGill Slater
  • “I recently had my 110m² block paved driveway at my home in Maidenhead professionally cleaned, re-sanded and sealed.”
    FCFrancesco Carco
  • “Top notch service. Turned up on time, quick, efficient and my drive has never been so clean! Will definitely use Jon again.”
    DHDaniel Harrison
  • “Jon and the team at Chiltern Surface Co were professionalism exemplified.”
    CWConnor Walton
  • “Jon and his team recently cleared all of our very mossy roofing tiles.”
    CColin
  • “We used Chiltern for patio cleaning and we were very impressed! Our patio which was looking extremely sorry for itself is like new! I would definitely recommend. The team were very friendly and efficient.”
    CLClaire Lee
  • “Incredible job thank you! My patio had become badly stained from over-cleaning and really needed resealing.”
    BBookTravelBetter
  • “Meticulous, professional, paid attention to detail - our driveway and patios look brand new.”
    LHLinda HopkinsonMarlow
  • “Professional, knowledgeable and friendly. Highly recommend.”
    DODavid OsborneMarlow
  • “It's rare to find someone who is both highly skilled and genuinely nice to deal with.”
    TWThe Williamson TravelsMarlow

Questions

Soft Wash Treatment in Penn: your questions

Can you soft wash a flint and brick wall?

Yes, once we have checked the mortar. The solution deals with algae, moss and lichen while a gentle rinse leaves sound lime joints in place. Where pointing is already loose or missing, we recommend repair first.

Is soft washing suitable for a house in the conservation area?

Usually, yes. A low-pressure solution cleans without altering the surface, which suits older buildings. For a listed property, anything beyond cleaning is for the owner to agree with the local authority, and we will raise it if it applies.

Why do walls facing the woods stay green?

They get little sun and dry slowly after rain, and spores arrive constantly from the trees nearby. Algae, moss and lichen all need moisture first, so the shaded, wooded sides of a house are usually where growth starts and where it returns.

Will cleaning remove the weathering on old brick?

No, not the honest weathering that comes with age, and that is intended. Soft washing removes organic growth and staining. Colour changes and marks set into old brick or flint over a long time are part of the wall and may remain.

Can you clean painted render on a cottage?

Yes, if the paint is sound. Well-bonded paint is cleaned with a low-pressure solution and a gentle rinse. Flaking or powdery paint will not survive any cleaning method intact, so we point it out at the site visit and suggest redecoration where it is needed.

How long will the protection last?

Chiltern EverGuard™ protection typically lasts between 12 and 24 months, depending on the location, the surroundings, the surface and how it is maintained. Walls beside beech woodland or tall hedges tend to sit nearer the shorter end.

More from us

Other services in Penn

  • Sandstone entrance steps after cleaning, the stone pale and even from the path to the door
    Winter service

    Slippery Paths, Steps and Patios

    Winter cleaning that removes slippery algae and moss from paths, steps and patios, planned around the forecast.

    • Slippery growth removed
    • Planned around frost
    • Chiltern EverGuard™ where suitable
    Learn Moreabout Slippery Paths, Steps and Patios

Looking after a commercial building, a managed site or a portfolio? Render and masonry cleaning is handled by our commercial team, surveyed and priced as a specified job.

Chiltern Surface Co

Ask us to look at your walls on a free site visit.

We will look at each wall with you, identify the materials and the growth, and explain the gentlest method that will work. A clear quotation follows, and the choice is yours.

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  • Surface-specific recommendations

    We assess your surfaces and recommend the right approach for the best, long-lasting results.

  • Clear, fixed quotation

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  • No pressure or obligation

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  • Directly with the owner

    Speak directly with the owner and get expert advice you can trust.