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A one-coat super hydrophobic advanced clear roof tile waterproofer for all mineral building surfaces such as clay, concrete, terracotta, natural stone, slate, fibre cement, etc. This comes with a 10 year manufacturer’s guarantee.
Key features of our masonry cream include:
ProPERLA Water Repellent comes with a 10 year manufacturer’s guarantee which means there is no need to re-apply every few years, which can be the case with many roof tile sealers.
The masonry cream creates a clear insulation barrier for single skin buildings and those built with a cavity. It has been proven to help retain heat in walls and reduce heat loss.
UKAS accredited tests have demonstrated that by reducing water absorption of the walls, our masonry cream lead to thermal performance benefits. It has been proven to meet EAD 040083-00-0404.
In addition, testing in a hygrothermal chamber revealed that a wall coated in the masonry cream and subjected to repeated heat-rain conditions in accordance with EAD 090062-00-0404, resulted in reduced heat loss when compared with the uncoated (control) wall. The uncoated wall showed on average an increase of 6⁰C of heat loss in comparison to the walls coated with ProPERLA Masonry Crème.
The clear coating improves thermal efficiency and contributes to lower energy consumption and lower energy bills, by keeping walls dry. Damp walls act as ‘thermal bridges’ – enabling heat to transfer from the inside out twice as quickly as it would if the walls remained dry.
Independent testing has shown that ProPERLA Masonry Crème reduces water absorption by 96.3% and meets the British standard for water vapour resistance BS EN ISO 7783:2011.
Roof tile sealers often refer to a waterproofing treatment that ‘seals’ the surface, creating a waterproof film on the roof tiles. ProPERLA is so effective as it does not have a restriction on the ability of the building or roof of the property to allow air and moisture to escape and breathe out. ProPERLA Water Repellent benefits from an SD (breathability rating) of 0.03. A coating is considered to be breathable if it has an SD value of 0.50.
A breathing roof will improve it’s insulation properties. Just a 5% content of damp in building materials can lower the thermal resistance by up to 50%. If a roof tile cannot breathe, a build up of moisture will occur underneath the surface, leading to irreparable damage to roof tile.
A surface is considered super hydrophobic if a water droplet beads up (with a contact angle greater than 140⁰ and the droplets can slide aware from the surface readily (it has a small contact angle hysteresis). Super hydrophobic surfaces repel water, causing it to form beads because it is more attracted to itself than the surface. This means water will run off the surface making it extremely difficult to wet.
This is known as the ‘lotus effect’ due to its similarity to the lotus leaf but is also seen on duck feathers and butterfly wings.
Substrates coated with the protective masonry cream will respond in the same way – water will form droplets and won’t penetrate the substrate. Independent testing has shown that it reduces water absorption by 96.3% and meets the British standard for water vapour resistance BS EN ISO 7783:2011.
The superior technology of ProPERLA Water Repellent mimics the lotus leaf, repelling dirt and water to give a super hydrophobic effect, making roof tiles self-cleaning.
The tiles remain clean and attractive, even where they are exposed to extreme weather conditions including shade, high air humidity or sea salt penetrated air. Furthermore, ProPERLA Water Repellent is completely unaffected by UV rays
Contact J & G Solar today for a free, no-obligation quote and expert advice.
ProPERLA Water Repellent has undergone independent tests by UKAS certified body Lucideon and has been proven to meet the following standards;
Similarly, ProPERLA Water Repellent has been tested and certified in accordance with EN1504-2 : 2005, confirming depth of penetration, water absorption, resistance to alkali, drying rate and thermal conductivity.
Founded in 2019, J&G Solar emerged to fill a critical void created by the liquidation of existing solar providers. This left countless customers without support for the maintenance and upkeep of their solar power systems.
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J & G Solar Maintenance Ltd, Company Registration Number: 13232826, Registered Office: 57 Southend Road, Grays, Essex, United Kingdom, RM17 5NL