Precision manual scraping
Heavy moss is carefully removed by hand, tile by tile, without damaging the roof surface.
Roof Cleaning & Restoration
Cleaning, restoring & protecting roofs across the Northeast.
Over 25 years of hands-on experience and hundreds of roofs restored — with the exact method matched to your roof’s age, design and tiles.
SlateClay tileConcrete tileMoss & lichenBiocide protection
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Specialists in preserving the integrity and appearance of your roof.
At PWM External Cleaning Services we are specialist roof cleaning and restoration professionals dedicated to preserving the integrity and appearance of properties across the Northeast.
We have the perfect cleaning solution tailored to your specific roof and tiles. With over 25 years of hands-on experience and hundreds of roofs successfully restored across the region, we select the exact restoration method suited to your property’s age, design and material.
The Northeast climate
Why Northeast roofs need attention
Local coastal winds, heavy rain and damp conditions create the ideal environment for moss, lichen and algae to thrive on regional homes.
Holds moisture
Left untreated, moss acts like a sponge — holding moisture against your roof day after day.
Cracks tiles
Trapped water expands in freezing winter months, cracking and lifting tiles.
Blocks gutters
Washed-off growth clogs guttering and downpipes, causing overflowing gutters.
What we do
Our tailored roof method
Our fully trained technicians expert-tailor every job — combining techniques to achieve exceptional results safely and efficiently.
Gentle low-pressure softwash
Specialist solutions applied at low pressure break down algae and lichen without harming tiles, mortar or underlay.
Government-registered biocide
Every service concludes with a professional-grade biocide that penetrates deep into organic roots, eliminating microscopic spores.
Every roof type
From traditional slate roofs to modern concrete tile homes, we deliver a custom, spotless clean.
Long-lasting protection
Our biocide treatment prevents regrowth for years to come — a spotless clean and total peace of mind for local homeowners.
Real results
Drag to see the transformation
Every photo is a genuine PWM job. Slide the handle to compare before and after.
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Free, no-obligation quotes
Ready to see your property transformed?
Tell us what needs cleaning and we will recommend the right method for your surfaces. We will contact you as soon as possible.
- Over 25 years of experience across the Northeast
- Fully trained, insured & uniformed team
- HSE-registered biocide protection
Request a free quote
We will contact you as soon as possible.
FAQ
Frequently asked questions
Everything you need to know about our cleaning methods, treatments and quotes.
Cannot see your question? Give us a call or drop us a message, we're always happy to answer your questions.
01How do I get a quote?
Quotes are free and no-obligation. Fill in the quote form, call the office on 0191 468 3062 or the mobile on 07355 268348, and tell us a little about the job. We will recommend the right method for your surfaces and give you a clear price.
02Which areas do you cover?
We work with homeowners and commercial clients across the whole Northeast. If you are not sure whether you are in our area, just ask.
03Are you trained and insured?
Yes. Our team is fully trained, fully insured and fully uniformed, and trained in safe, compliant chemical softwash treatments.
04Will softwashing damage my render, brickwork or roof?
No. Softwashing uses low-pressure spray gear at standard hose pressure (under 100 PSI) with specialist cleaning solutions, so it is safe for render, weathered brick, slate, tiles and painted timber where high pressure would cause damage.
05Why does my wall or roof not look perfect straight after a softwash?
Green algae and surface film disappear almost instantly, but heavily embedded lichen, black spot and deep-seated spores break down gradually. Our HSE-registered biocide keeps working, and rainfall reactivates it over the following weeks and months, so surfaces keep getting cleaner and brighter.
06How long will the results last?
Every roof and softwash service finishes with a government-registered biocide that kills spores at the root and helps prevent regrowth. Our softwash and biocide cycle keeps surfaces clean up to three to five times longer than traditional pressure washing.
07Is it safe for my garden and plants?
Yes. Before any treatment, lawns, beds and sensitive plants are soaked with clean water and shielded, and we finish every job with a full clean-down of paths, walls and windows.
08Do you re-sand block paving after cleaning?
Yes. Once the paving is completely dry, we sweep fresh kiln-dried sand back into the joints to lock the blocks in place and help prevent movement.
09Can you seal or restore my driveway after cleaning?
Yes. We offer protective sealing for block paving, natural stone and concrete, resin repointing for patios, and tarmac restoring and recolouring to bring faded tarmac back to a deep black finish.
10Do you clean gutters inside and out?
Yes. We clear the inside of the gutters and downpipes, then softwash the outside of gutters, fascias, soffits and bargeboards, and finish with a water-flow test.