- External Waterproofing Repellent Spray Systems
There are many different products available on the market but they essentially all do the same thing. Waterproofing masonry liquid penetrates brick, stone, concrete & cement. It creates a long lasting water-repellent breathable barrier. Prevents penetration of rain, the risk of water damage & spalling caused by frost is minimised. The short fall with repellent spray systems is subject to the quality of the substrate. If the substrate is crumbling or defective the lifespan of the repellent is significantly reduced.
- External Waterproofing Membrane Systems
External waterproofing systems, combine a primary and secondary waterproofing system along with a priming stage.
Priming involves applying a specially-designed spray to the external structure, the primer narrows the masonry pores, creating a water-repellent surface. The chemical design ensures a bond with the waterproof coating used in the primary waterproofing stage.
Primary waterproofing involves applying a waterproof material directly to the external wall. The substrate is treated with a waterproofing compound. These specially-designed coatings have a high compression strength and are water tight even under aggressive pressure.
Secondary Waterproofing – Cavity Membranes
An external cavity membrane can also be installed, which works as a drainage system. The cavity membrane alleviates any hydrostatic pressure against the building. The membrane also provides a protective layer for the primary waterproofing, especially during the backfilling process.
The design profile of the membranes creates multiple channels. Water is then able to drain freely down the channels to a suitable evacuation point. The water passes a fabric filter or internal polypropylene layer in the membrane, this filters fine particles and prevents them from entering the drainage system and causing problems.
By employing the above external waterproofing system, you have both a primary and secondary waterproofing barrier. Combining these methods reduces the risk of defects.
Both methods are also highly flexible, during building settlement or movement the external masonry waterproofing moves with it and maintains watertight integrity.
- Wall Insulation
Solid Wall Insulation systems are specially designed to be installed on solid wall construction. These systems provide an insulating barrier against the climatic elements.
Types of wall insulation systems used are External Wall Insulation, Internal Wall Insulation, Hybrid Wall Insulation and Cavity Wall Insulation. All systems have their own advantages and disadvantages. All systems play a big part in resolving penetrating damp in houses and building.
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