heating, ventilation & damp proofing products
After the dry weather comes the rain: is your building ready?
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downpour, property owners and building managers can use dry conditions as an opportunity for preventative maintenance. External walls should be checked for damaged or missing pointing, cracks, deteriorated render and other obvious defects. Particular attention should be paid around windows and doors and at junctions between different materials. Gutters, downpipes and drainage should
also be inspected and cleared so that they can cope with sudden heavy rainfall. Once defects have been addressed,
After a prolonged spell of hot, dry weather, rain can come as a welcome relief. For buildings, however, the transition from extended dry conditions to periods of heavy rainfall can expose weaknesses that may have developed unnoticed during the dry spell, explains Simon Trenerry, Technical Advisor at Safeguard Europe. Hot and dry conditions don’t just affect lawns and gardens. They can affect the ground supporting buildings and expose weaknesses in the building fabric. This is particularly important in areas
with shrinkable clay soils. As clay dries, it contracts; when moisture returns, it
expands again. Where this movement is uneven, foundations can move and cracking can occur. Properties in clay-rich areas, including
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parts of London and South East England, can be particularly susceptible. Movement isn’t the only concern.
Extended periods of heat and dryness can also highlight deterioration in mortar joints, render, sealants and other elements of the external envelope. Once heavy rain returns, these defects can provide routes for water into the building. Rather than waiting for damp patches to reveal a problem during the next prolonged
exposed porous masonry can be given additional protection against rain penetration. Safeguard Europe’s Stormdry Masonry
Protection Cream is designed to penetrate porous materials such as brick, mortar, sandstone and concrete, creating a water- repellent barrier while allowing the masonry to remain vapour permeable or ‘breathable’. Independent assessment by the British
Board of Agrément (BBA) demonstrated substantial reductions in water absorption on tested substrates. The certificate reports reductions of 99% for the tested brick, 98% for mortar and concrete, and effectiveness for 25 years.
https://safeguardeurope.com/
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