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Our Approach

The right method for every surface

Considered, precise and property-specific. We assess every surface individually, choose the correct method, and take the time to do it properly — not the fastest way, the right way.

We use the lowest pressure and the minimum amount of chemistry required to achieve the desired result. We would always rather build both gradually, only where needed, than start aggressively and risk compromising the surface.
Jon McGrathFounder, Chiltern Surface Co
Limestone surface being cleaned with a controlled, surface-safe method

A tailored approach

We assess before we clean

No two surfaces are the same, so the method is chosen to suit the surface in front of us. Before any cleaning begins, we assess your property and weigh up exactly what the surface needs — and what could harm it.

That assessment is what lets us clean effectively without scarring stone, cracking render or forcing water where it shouldn’t go.

  • The surface type and how it weathers
  • Its current condition and age
  • Any existing damage or loose jointing
  • Moss, algae, lichen, black spot and staining present
  • Drainage and where run-off will go
  • Nearby plants, lawns, glass and painted surfaces
  • Whether pressure, soft wash or treatment is most appropriate

How the service works

Simple, clear and no pressure

  1. 01

    Get in Touch

    Tell us about your property and the surfaces you'd like cleaned. Photos help us understand what's involved.

  2. 02

    Free Site Assessment

    We visit, inspect the surfaces, materials and drainage, and confirm the safest effective approach.

  3. 03

    Clear Quote

    You get a clear, itemised quote with no pressure and no obligation — just honest advice.

  4. 04

    Professional Cleaning & Treatment

    We carry out the work to the agreed method, treating growth at the source rather than masking it.

  5. 05

    Aftercare Advice

    We explain how to keep the surface looking its best, and when a maintenance treatment is worthwhile.

Expertise by material

A different method for every surface

The same surface treated the wrong way is the most common cause of lasting damage. Here’s how our method changes with the material.

  • Natural stone & limestone

    Low-pressure cleaning and soft washing lift growth without scarring or opening the surface.

  • Slate & clay roofs

    Chiltern EverGuard™ and gentle removal — never high pressure, which forces water under tiles.

  • Block paving & driveways

    Controlled cleaning, weed and joint clearance, then re-sanding to stabilise the surface.

  • Render & cladding

    Soft washing with the correct dwell time cleans delicate coatings without damage.

  • Porcelain & patios

    Surface-appropriate cleaning plus black-spot (lichen) treatment at the source.

  • Brickwork

    Targeted treatment for efflorescence and organic staining, matched to the brick.

What we don’t do

Just as important as what we do

The wrong cleaning method can cause permanent damage — which is exactly what our approach is built to avoid.

  • Blast every surface with maximum pressure
  • Use one method for all materials
  • Ignore underlying damage or loose jointing
  • Make unrealistic promises about results
  • Recommend treatment unless it's genuinely appropriate
Brickwork being treated for efflorescence and organic staining

Cleaning, restoration & treatment

The techniques behind the results

Exterior care is more than pressure washing. Depending on the surface and the problem, we draw on a full range of specialist methods — chosen to treat the cause, not just the appearance.

  • Controlled, low-pressure cleaning
  • Soft washing for delicate surfaces
  • Manual moss removal
  • Chiltern EverGuard™ treatment
  • Mineral and black-spot stain treatment
  • Efflorescence treatment
  • Weed and joint clearance with re-sanding
  • Aftercare advice to protect the finish
Method matched to the surface, every time.

Trained to a recognised standard

  • Lantra Trained

    Recognised industry training

  • BWCA Certified

    British Window Cleaning Academy

  • Fully Insured

    Cover on every job, large or small

  • 5-Star Rated

    Reviewed by homeowners on Google

Chiltern Surface Co

Book your free site visit.

See the difference the right approach makes. We’ll assess your surfaces and recommend exactly what’s needed — no pressure, no obligation.

  • Surface-specific recommendations

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

  • Clear, fixed quotation

    You'll receive a detailed, transparent quote with no hidden extras.

  • No pressure or obligation

    We'll provide honest advice so you can decide what's right for you.

  • Directly with the owner

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

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