If your building has looked a little greener, grimier or more sun-baked lately, you’re probably not imagining it. The UK’s weather is changing in a way that’s tailor-made for facade staining: wetter, milder winters that feed biological growth, followed by hotter, drier summers that bake pollutants and dirt into the surface.
The Met Office projects winters up to 30% wetter and summers up to 60% drier by 2070, alongside markedly warmer conditions. That combination is a perfect double-act for facade staining and deterioration.
Why facade staining is getting worse
Moisture and mild temperatures accelerate the spread of algae, fungi and lichens on stone, brick, render and terracotta. Conservation bodies like Historic England have long noted that biological growth exploits damp surfaces. Algae and lichens anchor into pores and micro-cracks and, in some cases, secrete compounds that attack minerals.
In short, more wet months = more algae growth = more damage to facades.
Then summer arrives. Prolonged heat and lower rainfall dry the surface and harden the soiling. Airborne particulates, exhaust residue and dust hard-set into a film that’s harder to shift. This seasonal “rinse then bake” cycle has been increasingly evident, with the Met Office confirming an exceptional run of wet months through winter 2023–24 and record-warm conditions in summer 2025.
The hidden cost of poor facade cleaning
It’s tempting to “wait another year,” but delaying facade cleaning can be expensive. The UK’s National Audit Office estimates that deferring backlog maintenance can push costs up by more than 50% in as little as two to four years. That’s before you factor in reputational effects and tenant churn. Planned works nearly always beat reactive works on cost and disruption.
Professionally, this is also the direction of travel. RICS’ guidance on planned preventative maintenance encourages methodical inspection and forward planning precisely because lifecycle costs rise when maintenance is postponed and bundled into emergency interventions.
Carbon mathematics favour refurbishment over replacement
There’s also a carbon reason not to let facades slide into replacement territory. Embodied carbon (that’s the carbon emissions baked into materials and produced during construction) is now a major slice of the UK’s commercial construction footprint.
Recent estimates from the UK Green Building Council put embodied carbon from construction at around 20% of all UK built environment emissions. Replacing facade systems prematurely adds a carbon spike that you can often avoid with restorative cleaning or in-situ restoration.
To put numbers on it, facade studies conducted by global consultancy ARUP show embodied carbon in the hundreds of kilograms of CO₂ per m² for new systems, before operational energy is even considered.
RICS’ Whole Life Carbon Assessment standard exists to help property owners weigh this against refurbishment options, not just capital cost. In many cases, cleaning and targeted repairs extend service life dramatically at a fraction of the carbon and the spend.
What climate-smart facade care looks like
1) Inspect after winter, clean before summer
Schedule condition surveys as the wet season tails off. You’re looking for biological growth, salt/crust formation, failed sealants, open joints and any water-ingress pathways that will accelerate damage. A pre-summer clean prevents “baked-on” films that become progressively more stubborn. RICS’ PPM guidance supports building these cycles into your asset plans.
2) Choose minimal-damage methods
For sensitive substrates, DOFF Steam Cleaning is a go-to because it uses high-temperature, low-pressure steam to lift growth and soiling without chewing up mortars or surface finishes. That aligns with conservation principles of using the least aggressive method capable of doing the job.
3) Document everything (and bank the benefits)
The UK’s regulatory direction favours a “golden thread” of building information. Record what was cleaned, how, and with what parameters. This builds institutional memory, simplifies future tendering and supports sustainability reporting. The RICS Whole Life Carbon Assessment (WLCA) standard is the framework for evidencing the carbon benefit of refurbishment over replacement.
4) Keep it sustainable
Steam-based cleaning can sharply reduce water and chemical use versus conventional methods, aligning with corporate sustainability goals and site constraints. Multiple studies in hygiene-critical settings report major reductions in water consumption and the elimination of disinfectants in many applications when high-temperature steam is used. While facades are a different context, the efficiency principles carry across, with obvious benefits for water usage and adjacent wildlife.
A simple plan for the year ahead
- Spring survey
Capture defects after winter is over. Prioritise areas of heavy soiling or staining, as these could evolve into more serious issues. - Pre-summer clean
Remove growth and soiling before hot spells hard-set the film. DOFF Steam Cleaning helps immensely with heritage buildings or delicate substrates, while other specialist methods of restoration work well on metal, glass and modern stone facades. - Autumn touch-ups
High-traffic staining and local outbreaks of algae are cheaper to address while small. - Data and photos
Log methods, temperatures/pressures, before-and-after imagery and any product datasheets. This supports budgeting, WLCA exercises and compliance reporting.
Get started on preventative facade maintenance today
The UK’s weather is shifting in a way that accelerates facade damage both in winter and in summer. The answer isn’t to rip off and replace facades. The solution lies in regular maintenance using low-impact methods that preserve fabric, control cost and avoid needless embodied carbon.
If you’d like a climate-smart maintenance plan for your commercial building facade, See Brilliance can help.
With over 30 years’ experience in facade restoration, See Brilliance supports commercial clients across the UK with expert restorative cleaning services. Our operatives work closely with architects, landlords, facilities managers and property owners to keep buildings safe, visually striking and environmentally efficient.
To speak to our team, call 01635 230888, email [email protected] or contact us here.
We offer a full range of specialist facade restoration services, including glass restoration, commercial facade and cladding restoration, graffiti removal and TORC Cleaning.