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ITSummer property maintenance: how heat, storms and pollution attack façades and roofs
In summer, building materials face demanding conditions: strong UV, violent thunderstorms, dust and pollution deposits. Summer property maintenance is about getting ahead of them.
Without suitable protection, substrates deteriorate quickly. That is where SCALP comes in, with products specially designed to prevent, treat and enhance sensitive surfaces for the long term.
1. Summer storms and rain: water ingress, biological growth, damp
Summer is not just about sunshine: it also brings intense, sometimes sudden thunderstorms. These short, heavy downpours put materials under severe strain, especially when they are porous or poorly protected. The alternation of hot spells and heavy rain creates the ideal environment for problems that are invisible in the short term but costly in the medium to long term.
Perfect conditions for growth
Materials on façades, roofs, paving and plinths absorb moisture after every shower. This standing moisture leads to:
- The growth of micro-organisms (moss, green algae, lichen, fungi), particularly on north-facing elevations or areas that get little sun.
- The gradual deterioration of joints and mineral surfaces, weakened by water ingress and the cycle of drying and reheating.
- Silent water ingress that can pass through render or masonry to the interior walls, causing staining.
In urban, rural and coastal areas alike, this is amplified by ambient humidity, air pollution and dust, which act as a substrate for unwanted growth. Moss on roof slopes and green algae on shaded render are the first signs.
SCALPFUGE 35 – Keeping the substrate dry before autumn
The most effective way to stop biological growth taking hold is to stop the substrate holding water. SCALPFUGE 35 is a clear, non-film-forming, water-based masonry sealer whose performance has been independently tested and certified by Buildwise (formerly CSTC, the Belgian building research institute). Applied to a clean, dry substrate, it penetrates deep into roof tiles, slate, fibre cement, stone, brick, concrete and mineral renders and stops rainwater soaking in, while letting the material breathe. A substrate that dries quickly after each shower gives moss, algae and lichen far less chance to establish. It also protects against freeze-thaw damage and urban soiling, without changing the appearance of the surface.
Professional roof waterproofing – SCALPFUGE 35
- Roof tiles and slate roofing
- Brick and masonry
- Hydraulic renders and mineral coatings
- Natural and reconstructed stone
- Concrete and fibre cement
- Marble and porous mineral materials
Why act in summer?
- Micro-organisms take hold when warmth follows rain: cleaning and sealing the substrate during the summer, while it is dry, means acting before growth becomes established in the autumn.
- By acting early, you preserve the appearance of façades and roofs and avoid heavier work later (scraping, repointing, full façade renovation).
- You also reduce the risk of coatings coming away or render weakening through water saturation.
2. Summer pollution and urban dust
Summer is also a season when atmospheric pollutants build up on façades. Long dry spells, combined with more intense human activity (road traffic, building sites, outdoor events), encourage the deposit of greasy particles, fine dust and soot. The result: exterior surfaces get dirty faster, lose their brightness and can, in time, deteriorate.
A quiet but damaging build-up
High temperatures intensify the effect of urban pollution on buildings:
- Greasy soiling from road traffic and volatile pollutants;
- Sticky dust that bonds to warm surfaces;
- Soot and combustion residues from traffic or summer barbecues in residential areas;
- In some areas, deposits of pollen, dry leaves or dust from building sites.
This ‘dry’ pollution spoils the appearance of materials (dulled colour, streaky dirt, staining) and can encourage the later growth of micro-organisms if it is not cleaned off regularly.
SCALP FACANET PAE: No-rinse cleaner for façades, roofs, walls and floors soiled by urban pollution and atmospheric grime
SCALP FACANET PAE is a professional cleaner designed to remove the soiling caused by air pollution: soot, dust and the like. Ready to use, it is spray-applied to all common surfaces: natural or reconstituted stone, brick, render, concrete, fibre cement and more. Applied by low-pressure spray and left to work, it is a soft washing method rather than an abrasive one.
No-rinse and free from chlorine and caustic soda, it works in depth while respecting the substrate. Its fast action means the substrate can be overcoated after 48 hours, which makes it an ideal ally for summer façade renovation or maintenance work. It restores façades to their original appearance, extending the life of exterior materials while limiting heavier interventions.
Professional No-Rinse Facade Cleaner – SCALP FACANET PAE
SCALP FACANET PAE is a professional, no-rinse cleaner designed for fast and effective facade cleaning on roofs, walls, floors, and facades. Its powerful, pH-neutral formula removes urban deposits such as soot, dust, and fine particles while preserving the natural look and integrity of the surface.
This versatile cleaner is suitable for a wide range of materials, including natural and reconstituted stone, brick, concrete, fibre cement, and hydraulic or organic plasters. For large or hard-to-reach areas, SCALP FACANET PAE can be applied using drones, offering fast, uniform, and safe coverage without the need for rinsing.
3. Sensitive surfaces: simplifying maintenance with smart products
Some architectural structures and public buildings are in hard-to-reach locations, subject to specific conditions (pedestrian zones, great heights, sensitive environments) or must meet high standards of cleanliness and durability without frequent intervention.
In such cases, conventional maintenance becomes a burden: maintenance costs rise, and interventions are riskier or need specialist equipment. That is why professionals are increasingly looking for smart, durable, low-maintenance solutions.
SCALP CONSOLIDANT HYDROFUGE: Consolidating mineraliser and water repellent in a single application
SCALP CONSOLIDANT HYDROFUGE is a 2-in-1 treatment, both mineralising and water-repellent, designed to strengthen the structure of materials while protecting them effectively against damp. The product penetrates deep into porous substrates such as calcareous or siliceous stone, brick, concrete and mineral renders to harden and stabilise the material, while preventing water ingress. Its non-film-forming formula lets substrates breathe, allowing water vapour to escape, which is essential to the long-term durability of the materials.
Invisible once applied, SCALP CONSOLIDANT HYDROFUGE perfectly preserves the natural appearance of surfaces, with no gloss and no change in colour. It is an ideal solution for historic façades and listed buildings, but also for all sensitive or hard-to-reach substrates where maintenance must be kept to a minimum. By consolidating materials while making them water-repellent, this treatment extends the life of the structure and considerably reduces the risk of damage from damp, weather and pollution. Ready to use, it gives lasting protection from 72 hours after drying.
2-in-1 stone consolidator & water repellent – SCALP CONSOLIDANT HYDROFUGE
SCALP CONSOLIDANT HYDROFUGE is a professional 2-in-1 waterproof consolidant that strengthens porous materials while delivering long-lasting protection against water penetration and atmospheric damage.
Designed for façades, walls and floors, this high-performance masonry consolidator and water repellent penetrates deeply into mineral substrates to reinforce weakened surfaces and create an invisible protective barrier. The treatment does not alter the appearance of the material, making it ideal for both modern construction and heritage restoration projects.
Suitable for stone, brick, concrete and mineral coatings, it provides durable structural reinforcement while protecting surfaces from moisture, damp and pollution.
Important note: for optimum penetration and maximum effectiveness, it is recommended to carry out a deep clean of the surface before application. A clean substrate, free of dirt, dust and organic deposits, allows the treatment to bond better.
Summer poses specific challenges for the building sector: intense UV, sudden rain, urban grime, poor access and limited maintenance windows. SCALP offers suitable technical solutions: clear or coloured water repellents, powerful no-rinse cleaners and consolidating treatments. These products make it possible to anticipate risks, reduce interventions and extend the life of structures, while preserving their appearance and saving time.
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